A tech backs the van into a customer’s garage door, you send him for a post-accident test, and it comes back positive for THC. In Texas, Florida or Ohio, that result forfeits his comp claim and ends his employment with no exposure. In New York, you weren’t allowed to test him for cannabis in the first place. In New Jersey, the positive means nothing without a documented impairment evaluation. In California, it depends on whether you’re a licensed contractor (construction trades are exempt from the state’s protection) or a locksmith (not exempt), and on whether the lab tested for active THC or the metabolite that lingers for weeks. Twenty-four states have legalized recreational marijuana and 11 jurisdictions now protect employees or applicants in some way, while 13 states still pay you a workers’ comp discount to run a testing program.
This guide covers all 50 states and DC as of October 2026: which states protect off-duty cannabis use, which protect medical patients only, which regulate how you test, which pay you to test, and the safety-sensitive carve-outs that put most field technicians back inside an employer’s testing rights even in the protection states.
Quick answer: Eleven jurisdictions protect off-duty cannabis use or restrict acting on a positive test: California (construction trades exempt), Connecticut (construction exempt), DC, Illinois, Minnesota, Montana, Nevada (pre-employment only), New Jersey, New York, Rhode Island and Washington (pre-employment only). Every one has a safety-sensitive or motor-vehicle carve-out that covers most techs if the employer designates the position in writing first. Twelve states protect medical cardholders only (AZ, AR, DE, ME, MA, MO, NM, OK, PA, SD, VA, WV), again with safety carve-outs. Seven states regulate testing procedures without protecting use (Vermont and Maine bar random testing; Iowa, Louisiana, Hawaii, North Carolina, Nebraska set lab and notice rules). Thirteen states give a 4–7.5% comp discount for a certified program. The rest, including Colorado, Michigan, Ohio, Oregon and Texas, leave testing entirely to the employer. DOT drivers are tested under federal rules everywhere, and the April 2026 federal rescheduling of medical marijuana changed none of this.
On this page
The Federal Layer: DOT, Rescheduling, OSHA
DOT testing applies only to drivers who need a CDL: vehicles over 26,001 lbs GVWR, placarded hazmat, or 16+ passengers. A standard service van or a one-ton with a trailer under that combined weight is not a DOT-regulated vehicle, and most trades shops have no DOT-covered employees. If you do, 49 CFR Part 40 requires pre-employment, random (50% annually for drugs), reasonable-suspicion, post-accident and return-to-duty testing, Clearinghouse queries, and overrides every state cannabis protection. See USDOT number requirements for service vans for which vans cross the line.
Rescheduling: In April 2026 the DEA moved FDA-approved and state-licensed medical marijuana to Schedule III; recreational marijuana stays in Schedule I pending a hearing whose recommended decision was still outstanding as of October 2026. Neither change affects employer testing: Schedule III drugs (ketamine, Tylenol with codeine) are still tested for and still grounds for discipline under a policy, DOT’s panel is set by HHS separately, and state employment protections never depended on federal scheduling. The practical effect is more medical-card holders and more accommodation requests.
OSHA (29 CFR 1904.35) bars post-accident testing policies that deter injury reporting: blanket “test after every injury” rules are permitted under OSHA’s 2018 memo as long as they’re applied consistently and the test could plausibly identify impairment that contributed, but testing a tech for a bee sting or a repetitive-strain report invites a citation. The Drug-Free Workplace Act requires only federal contractors and grantees over $100,000 to maintain a policy; it doesn’t require testing. The ADA doesn’t protect current illegal drug use, but does protect alcoholism and past addiction in recovery, and a prescription-drug positive (opioids, Adderall) must go to an MRO before any action.
The 11 Protection Jurisdictions
States that limit an employer’s right to act on off-duty cannabis use or a positive THC test, and the carve-out that restores most of that right for field positions.
| State | What’s protected | Carve-outs | What a trades shop does |
|---|---|---|---|
| California | Off-duty use; non-psychoactive metabolite tests; applicant history | Building and construction trades; federal testing | Oral-fluid (active THC) testing; impairment |
| Connecticut | Off-duty use and positive tests without a written policy | Construction, utilities, transportation and other exempted employers | Written policy; reasonable suspicion; designated high-risk random |
| District of Columbia | Use, patient status, positive tests | Safety-sensitive positions designated in writing; federal contractors | Designate field jobs; post notice; random for designated |
| Illinois | Off-duty use (lawful product) | Reasonable zero-tolerance policy; good-faith impairment; pre-employment policy | Policy plus documented impairment with chance to contest |
| Minnesota | Off-duty use; cannabis dropped from “drug” definition | Safety-sensitive, CDL, federal, care positions | Designate safety-sensitive; DATWA procedures; first-positive rehab |
| Montana | Off-duty use (lawful product) | Performance or safety effect; signed substance-abuse policy; hazardous work | Signed policy; testing only for hazardous positions |
| Nevada | Positive pre-employment test | Motor-vehicle positions; safety; firefighters, EMTs | Pre-hire testing for drivers; off-duty use unprotected |
| New Jersey | Use and positive tests (sole basis) | Federal testing only (construction exemption pending) | Test plus WIRE-style impairment evaluation |
| New York | Off-duty use; testing itself | Federal testing; funding loss; articulable impairment symptoms | Drop THC from panel; two-observer impairment documentation |
| Rhode Island | Off-duty use and positive tests | Hazardous jobs with 24-hour pre-shift abstinence policy; federal | 24-hour policy; reasonable-suspicion only for employees |
| Washington | Pre-employment non-psychoactive metabolite tests | Safety-sensitive positions identified before application; federal | Flag postings; oral fluid; full testing after hire |
The Impairment Problem
The reason legislatures keep carving cannabis out of testing law is the test itself. A urine screen detects THC-COOH, a non-psychoactive metabolite that stays detectable for days in an occasional user and weeks in a daily one; a positive says the person used at some point, not that he was high at 8 a.m. Hair tests reach back 90 days. There is no cannabis breathalyzer with a legally accepted impairment threshold, and the per se blood limits a few states set (Pennsylvania 10 ng/ml, West Virginia 3 ng/ml) are for impairment at work, not off-duty use. That’s why California and Washington now bar acting on non-psychoactive metabolite tests, and why New Jersey and New York require documented impairment.
Two things follow for a trades employer. First, oral-fluid testing detects parent THC with a window of roughly 24 hours, which is close enough to “recent use” that it satisfies California and Washington’s active-THC requirement, is DOT-approved (collection in the field, observed, no bathroom), and is the panel of choice for post-accident and reasonable-suspicion tests everywhere. Second, reasonable-suspicion documentation is what carries discipline in every protection state: two trained observers, a standardized form (slurred speech, odor plus behavior, coordination, the specific task affected), written before the test is ordered. Odor alone fails in New York and Illinois; a positive alone fails in New Jersey. The combination holds everywhere.
States That Pay You to Test
Thirteen states give a workers’ comp premium credit for a certified drug-free workplace program, and nearly all of them also create a presumption that a post-accident positive caused the injury, which shifts the burden to the employee and usually ends the claim. The programs share a template: a written policy with 60 days’ notice, five types of testing (pre-employment, reasonable-suspicion, post-accident, routine fitness-for-duty, follow-up), a certified lab with MRO review, supervisor training and employee education.
| State | Comp discount | Requirements |
|---|---|---|
| Georgia | 7.5% | Certified program; supervisor training 2 hrs; employee education 1 hr/yr |
| Ohio | 4% / 7% | BWC Drug-Free Safety Program, basic or advanced |
| Alabama | 5% | Certified program; 60-day notice; five testing types |
| Arkansas | 5% | Drug-free workplace program; presumption on post-accident positive |
| Florida | 5% | Certified program; MRO; presumption plus reemployment-assistance denial |
| Hawaii | 5%+ | Safety and health program (not testing-specific) |
| Kentucky | 5% | 803 KAR 25:280 certified program |
| Mississippi | 5% | Program under § 71-3-201; § 71-7 procedures |
| South Carolina | 5% | Program under § 38-73-500 |
| Tennessee | 5% | Certified program; five testing types; training |
| Virginia | 5% | Program under § 65.2-813.2 |
| Idaho | Varies | Public employers testing all staff (SB 1119); private safe harbor |
| Wyoming | Varies | State fund drug-free workplace discount |
Even outside the discount states, a post-accident positive matters for comp: Kansas, Missouri (50% reduction), Wisconsin (15% reduction), Texas, Louisiana, Oklahoma, Utah, West Virginia and Idaho all presume intoxication or reduce benefits on a positive under a written policy, and nearly every state denies unemployment for a positive that violates a known policy.
The Policy That Works in All 51
- Designate every field position safety-sensitive in writing, in the job description and the posting, before the hire: operates company vehicles, uses power tools, works with electricity, gas or refrigerants, at heights or in confined spaces. That designation is the carve-out in DC, Minnesota, Washington, Arizona, Arkansas, New Mexico, Oklahoma, South Dakota, Nevada (motor vehicle) and Rhode Island (24-hour rule), and the reasonableness basis for random testing in Massachusetts, Connecticut and California.
- Test for active THC, not metabolites, with oral fluid for pre-employment, post-accident and reasonable-suspicion tests. It satisfies California and Washington, is defensible everywhere, and takes the “he smoked last Saturday” argument off the table.
- Drop THC from the pre-employment panel for non-field hires in New York, New Jersey, Nevada, Washington, DC, Minnesota, Philadelphia and Pittsburgh. Test for everything else.
- Reasonable suspicion with two observers and a form, documented before the test. Required in substance by New Jersey (WIRE), New York, Illinois, Connecticut, Vermont, Maine and Rhode Island, and the best evidence everywhere else.
- Follow the procedure states’ rules where you operate: DOL-approved policy in Maine; no random testing in Vermont, Rhode Island or (without designation) Connecticut; certified-mail notice in Iowa; written result notice in Maryland; 10-day notice in Oklahoma; the owner in the random pool in Utah; a policy on file if you have 15+ employees and comp coverage in Texas.
- Medical cardholders: send the positive to the MRO, ask for the card, run an interactive process (required in substance in Massachusetts, Nevada, Pennsylvania, Delaware, Arizona, New York), and act on the safety-sensitive carve-out rather than the card.
- Put the policy in the handbook with a signed acknowledgment, and in the discount states, file for certification. The signed policy is what Montana, Illinois and Connecticut require and what the comp presumption rests on in Texas, Ohio and the Southeast.
What Changed in 2025–2026
New since 2025: Kentucky’s medical cannabis program opened (January 2025) with the strongest employer protections of any medical law. Nebraska adopted medical cannabis rules (2025) with no employment protection. Hawaii’s appellate court cautioned against firing patients on status alone (2025). The DEA rescheduled FDA-approved and state-licensed medical marijuana to Schedule III (April 2026); recreational rescheduling remains pending after a summer 2026 hearing. Maryland’s SB 439 protected fire and rescue personnel’s off-duty use (October 1, 2026). New Jersey’s construction and safety-sensitive exemption bills remain pending, as does Oregon’s off-duty protection bill and New Jersey’s WIRE rule. Florida’s recreational measure failed (November 2024); North Dakota’s and South Dakota’s failed the same day. Watch Pennsylvania (adult-use bills with employer provisions) and Hawaii (adult-use passed the Senate in 2025 and 2026).
State-by-State Breakdown
Red chips mark jurisdictions that protect off-duty cannabis use or a positive test for employees or applicants; amber marks states that protect medical patients only or regulate testing procedures (lab rules, notice, no random testing) without protecting use; grey marks states where testing and discipline are entirely the employer’s call. Each block gives the cannabis rule, the testing rules (including comp discounts and post-accident presumptions) and the trades angle, with a link to the statute or agency page.
Jump to your state
Alabama Employer’s Call
Cannabis rule: Recreational use is illegal. The 2021 medical cannabis law expressly lets employers keep drug-free policies, refuse to hire or fire cardholders who test positive, and gives no right to accommodation.
Testing rules: Voluntary Drug-Free Workplace Program: a certified program (written policy, 60-day notice, pre-employment, reasonable-suspicion, post-accident and follow-up testing, supervisor training, EAP information) earns a 5% workers’ comp premium discount and a presumption that a post-accident positive caused the injury, forfeiting comp benefits. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: The 5% discount pays for the testing program at most shops; without it, a post-accident positive is only a rebuttable defense.
Alaska Employer’s Call
Law: Alaska Stat. § 23.10.600–.699; Ballot Measure 2 (2014)
Cannabis rule: Recreational use is legal, but the legalization law says nothing restricts an employer’s right to prohibit or test for marijuana. No off-duty or medical-patient protection.
Testing rules: Voluntary safe-harbor statute: an employer that adopts a written policy meeting § 23.10.620 (notice, confirmation testing, confidentiality, right to explain) is immune from suit over testing actions. Random testing allowed. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Adopt the safe-harbor policy; it costs nothing and blocks the wrongful-termination suit.
Arizona Medical Patients Protected
Law: A.R.S. § 36-2813 (AMMA); § 23-493 to -493.12 (Drug Testing of Employees Act); Prop 207 (2020)
Cannabis rule: Recreational use is legal (2020) but Prop 207 preserves employer drug-free policies in full. Registered medical cardholders can’t be refused hire, fired or penalized for cardholder status or a positive marijuana test unless they used, possessed or were impaired at work, or the position is safety-sensitive, or the employer would lose a federal benefit.
Testing rules: Voluntary safe harbor: a written policy under § 23-493.04 (distributed to employees, confirmation testing, employer pays) immunizes the employer. Section 23-493.06 lets an employer exclude a medical cardholder from a safety-sensitive position (operating vehicles or equipment, working with electricity, gas or at heights) on a good-faith belief of impairment. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Designate tech and installer positions as safety-sensitive in writing; that’s what the AMMA carve-out keys on.
Arkansas Medical Patients Protected
Law: Ark. Const. Amend. 98 § 3(f); Act 593 (2017); Ark. Code § 11-14-101 (Drug-Free Workplace)
Cannabis rule: Recreational use is illegal. Qualifying medical patients can’t be discriminated against for cardholder status, but Act 593 lets employers act on a good-faith belief of impairment and exclude cardholders from safety-sensitive positions designated in writing (vehicles, power tools, heights, electrical work all qualify).
Testing rules: Voluntary Drug-Free Workplace Program: certified program earns a 5% comp discount; a post-accident positive creates a rebuttable presumption the injury was substantially caused by the drug, forfeiting benefits. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Put the safety-sensitive designation in the job description before the hire.
California Off-Duty Use Protected (Construction Exempt)
Law: Gov. Code § 12954 (AB 2188, SB 700), eff. Jan. 1, 2024
Cannabis rule: Employers may not discriminate for off-duty, off-site cannabis use or for a drug test that detects only non-psychoactive metabolites (which is every standard urine and hair test), and may not ask applicants about past use. Employers may still test for active THC (oral fluid, blood) and act on impairment at work. Exempt: employees in the building and construction trades, positions requiring federal background checks, and federally mandated testing. Medical patients get the same protection.
Testing rules: No general testing statute; constitutional privacy limits random testing to safety-sensitive positions (Smith v. Fresno Irrigation District). Pre-employment testing after a conditional offer is allowed if it tests for active THC. Otherwise, no statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: A licensed contractor’s field crew (HVAC, plumbing, electrical, roofing) falls under the construction exemption and can still be urine-tested; a locksmith, appliance repair or cleaning company’s staff does not. See California employment laws for trade employers.
Colorado Employer’s Call
Cannabis rule: Recreational and medical use are legal, but the Colorado Supreme Court held in Coats that marijuana isn’t a “lawful activity” under the off-duty statute because it’s federally illegal, and Amendment 64 expressly preserves employer policies. Employers may fire for any positive test, medical card or not.
Testing rules: No testing statute. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Zero-tolerance is lawful; whether it’s wise when half your applicant pool uses legally on weekends is a hiring question, not a legal one.
Connecticut Off-Duty Use Protected (Construction Exempt)
Law: Conn. Gen. Stat. § 31-51t to -51aa (drug testing); § 21a-422p (RERACA, eff. July 1, 2022)
Cannabis rule: Employers may not act on off-duty cannabis use or a positive THC test alone unless they’ve adopted a written policy prohibiting use and distributed it before the test, and may always act on specific, articulable signs of impairment at work. Exempted employers (free to keep zero-tolerance policies regardless): mining, utilities, construction, manufacturing, transportation and delivery, healthcare, education, justice and national security, plus positions requiring federal testing, security clearances, commercial driving, or supervision of children or patients. Medical patients are protected from discrimination (§ 21a-408p) outside those exemptions.
Testing rules: Strict testing statute: pre-employment only with written notice at application time; current employees only on reasonable suspicion, except random testing for positions the Labor Department designates high-risk or safety-sensitive, federally required testing, or by CBA. Confirmation by GC/MS required; employee gets a copy; employer pays.
Trades note: Contractors are exempted employers under RERACA, but § 31-51x still bars random testing of a tech unless the position is designated high-risk; apply for the designation or stick to reasonable suspicion.
Delaware Medical Patients Protected
Law: 16 Del. C. § 4905A; Delaware Marijuana Control Act (2023)
Cannabis rule: Recreational use is legal (2023) but the Marijuana Control Act preserves every employer policy and testing right. Registered medical cardholders can’t be refused hire or fired for status or a positive test unless they used, possessed or were impaired at work, or a federal requirement applies.
Testing rules: No testing statute. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Medical cardholders in a van: act on impairment, not the test.
District of Columbia Off-Duty Use Protected
Cannabis rule: Employers may not refuse to hire, fire or penalize anyone for cannabis use, medical-patient status, or a positive THC test unless the position is designated safety-sensitive in writing (operating vehicles or heavy machinery, working with electricity, gas, hazardous materials or at heights, security, patient care), the employer is a federal contractor or would lose a federal benefit, or the employee is impaired at work. Employers must give written notice of the safety-sensitive designation and the law’s protections at hire and annually. Separately, applicants can’t be drug-tested for marijuana until after a conditional offer (2015).
Testing rules: No general procedure statute beyond the pre-offer ban. Random testing of designated safety-sensitive employees is allowed.
Trades note: Nearly every field position qualifies as safety-sensitive; the law fails on paperwork, not substance. Designate in the offer letter and post the notice.
Florida Employer’s Call
Law: Fla. Stat. § 440.102 (Drug-Free Workplace Program); § 381.986(15) (medical marijuana)
Cannabis rule: Recreational use is illegal (the 2024 ballot measure failed). The medical marijuana statute says employers need not accommodate on-site use and may keep drug-free policies; Florida courts have not required accommodation of off-duty medical use.
Testing rules: Voluntary Drug-Free Workplace Program: written policy with 60-day notice, pre-employment, reasonable-suspicion, routine fitness-for-duty, post-accident and follow-up testing, licensed lab, MRO review, confidentiality. Earns a 5% comp discount, a presumption that a post-accident positive caused the injury (forfeiting comp), and denial of reemployment-assistance benefits. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: The post-accident presumption is the real value: a tech who tests positive after a ladder fall forfeits the claim.
Georgia Employer’s Call
Law: O.C.G.A. § 34-9-410 to -421 (Drug-Free Workplace); § 33-9-40.2
Cannabis rule: Recreational use is illegal; the low-THC oil registry gives no employment protection. Employers may test and act freely.
Testing rules: Voluntary certified Drug-Free Workplace Program (“Drugs Don’t Work”): earns a 7.5% comp discount, the highest in the country, with the same testing menu as Florida’s plus a two-hour supervisor training and one hour of employee education annually. A post-accident positive presumes the injury was caused by the drug. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: 7.5% on a $40,000 comp premium is $3,000 a year for a program that costs a fraction of that.
Hawaii Testing Procedures Required
Law: HRS ch. 329B (substance abuse testing); § 329-122 (medical cannabis)
Cannabis rule: Recreational use is illegal. The medical cannabis law requires no accommodation at work and lets employers act on a positive test, though a 2025 appellate decision cautioned against disability discrimination based on patient status alone.
Testing rules: Mandatory procedures for any employer that tests: written notice of substances tested and procedures, licensed lab, confirmation testing, employer pays, results confidential, employee may provide a medication explanation. Safety-and-health program earns a comp discount of at least 5% (§ 431:14-103).
Trades note: Follow the ch. 329B notice form exactly; a procedural miss voids the result.
Idaho Employer’s Call
Law: Idaho Code § 72-1701 to -1716 (Employer Alcohol and Drug-Free Workplace Act)
Cannabis rule: All cannabis is illegal, including medical. No employee protection of any kind.
Testing rules: Voluntary safe harbor: a written policy meeting the Act (notice, confirmation, right to retest at employee expense) immunizes the employer, makes a positive test misconduct for unemployment purposes, and a post-accident positive is a comp defense under § 72-208. Random testing allowed.
Trades note: Adopt the Act’s policy for the unemployment and comp defenses alone.
Illinois Off-Duty Use Protected
Law: 820 ILCS 55/5 (Right to Privacy in the Workplace Act); 410 ILCS 705/10-50 (CRTA)
Cannabis rule: Cannabis is a “lawful product”: employers can’t discipline for off-duty, off-premises use. But the CRTA lets employers adopt reasonable, nondiscriminatory zero-tolerance or drug-free policies, discipline on a good-faith belief of impairment at work (specific symptoms listed in the statute), and refuse to hire applicants under a consistently applied pre-employment testing policy, as long as the employee gets a reasonable chance to contest. Medical cardholders are protected from status discrimination. Practitioners read the statute as allowing pre-employment and random testing under a written policy, which is how most Illinois employers operate.
Testing rules: No procedure statute. Beyond the above, no statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Have the policy, document the impairment indicators, give the tech the chance to explain, and the discipline holds.
Indiana Employer’s Call
Law: No general statute; Ind. Code § 22-4-15-1 (unemployment misconduct)
Cannabis rule: All cannabis is illegal except low-THC CBD. No protections.
Testing rules: No testing statute. A positive test under a written policy is misconduct for unemployment purposes. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Nothing to work around.
Iowa Testing Procedures Required
Law: Iowa Code § 730.5
Cannabis rule: Recreational use is illegal; the medical cannabidiol program gives no employment protection.
Testing rules: One of the strictest procedure statutes: written policy distributed to all employees, uniform random selection (if used) by a neutral method, pre-employment and reasonable-suspicion testing allowed, two hours of supervisor training before supervisors may request tests, certified lab with GC/MS confirmation, written notice of a positive by certified mail with the right to a second test at employee cost (reimbursed if negative), and rehabilitation must be offered on a first positive alcohol test for employers of 50+ (not drugs). Employer pays for the test. Violations carry employee suits with fees.
Trades note: Iowa juries have hit employers for skipping the certified-mail notice; use a TPA that knows § 730.5.
Kansas Employer’s Call
Law: No general statute; K.S.A. § 44-501(b) (comp intoxication defense)
Cannabis rule: All cannabis is illegal. No protections.
Testing rules: No testing statute. A post-accident positive at the statutory cutoff creates a conclusive presumption of impairment and, if the impairment contributed to the injury, forfeits comp benefits. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Kansas’s comp defense is one of the strongest; test post-accident every time.
Kentucky Employer’s Call
Law: KRS 218B.100 (medical cannabis, eff. Jan. 1, 2025); 803 KAR 25:280 (drug-free workplace)
Cannabis rule: Recreational use is illegal. The medical cannabis law (sales began 2025) expressly says employers need not accommodate use, may keep drug-free policies, may test, and may discipline cardholders; it also preserves the comp presumption.
Testing rules: Voluntary certified drug-free workplace program earns a 5% comp discount; a post-accident positive presumes the drug caused the injury. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Kentucky’s medical law is the most employer-protective of the new programs.
Louisiana Testing Procedures Required
Law: La. R.S. 49:1001 to :1021; R.S. 49:1016 (public employees); R.S. 23:1081 (comp)
Cannabis rule: Recreational use is illegal. The 2022 law protects only state employees who use physician-recommended marijuana; private employers are free to test and act, and the medical marijuana statute requires no accommodation.
Testing rules: Any employer that tests must use a SAMHSA-certified lab, split specimens, MRO review and confirmation testing, and give employees a copy of the result on request. A post-accident positive presumes intoxication for comp (R.S. 23:1081), forfeiting benefits unless the employee rebuts.
Trades note: Use a certified collection site; the R.S. 49:1005 lab requirements aren’t optional.
Maine Medical Patients Protected; Policy Approval Required
Cannabis rule: Recreational use is legal, but the 2018 amendments removed the employment anti-discrimination provision, so employers may discipline for off-duty recreational use (and the Department of Labor advises employers may still test for marijuana). Registered medical patients can’t be penalized for status or off-premises use unless federal law requires, though a 2018 Superior Court decision limited this where the employer acts on a positive test under a compliant policy.
Testing rules: Strictest procedure law in the country: employers may test only under a written policy approved in advance by the Department of Labor; probable-cause testing of employees requires documented, specific observations; random testing only for safety-sensitive positions or by CBA (and only employers with 50+ must have an EAP); applicants may be tested only after a conditional offer; confirmation and employee notice required; first-positive employees may not be fired if they complete rehab.
Trades note: Submit the model policy to DOL before you test anyone; testing without an approved policy is itself a violation.
Maryland Employer’s Call (Lab Rules)
Law: Md. Health-Gen. § 17-214; SB 439 (2026, fire and rescue, eff. Oct. 1, 2026)
Cannabis rule: Recreational use is legal (July 2023) with no employment protection; the medical cannabis statute requires no accommodation. SB 439 bars adverse action against fire and rescue personnel for off-duty use starting October 1, 2026, which doesn’t reach private trades employers.
Testing rules: Procedural statute: testing must use a certified lab, the employee must receive a copy of the result, the name of the lab and notice of the right to an independent test of the same sample at the employee’s expense within 30 days. Otherwise all testing types are allowed.
Trades note: Give the written result notice; that’s the only trap.
Massachusetts Medical Patients Protected (Accommodation)
Law: Barbuto v. Advantage Sales & Marketing (SJC 2017); M.G.L. c. 94G § 2(e); Webster v. Motorola (1992)
Cannabis rule: Recreational use is legal, but c. 94G expressly preserves employer policies; no off-duty protection. Under Barbuto, a medical patient’s off-site use may require reasonable accommodation as a disability (handicap) under c. 151B unless the employer shows undue hardship (safety, federal law), so firing a medical patient for a positive test without an interactive process is a discrimination claim.
Testing rules: No testing statute; the state privacy act and Webster allow random testing only for safety-sensitive positions and reasonable-suspicion testing for others. Pre-employment testing is allowed.
Trades note: Field techs driving company vans are safety-sensitive under Webster; office staff aren’t. Document the interactive process for any medical cardholder.
Michigan Employer’s Call
Law: MCL § 333.27954(3) (MRTMA); Casias v. Wal-Mart (6th Cir. 2012)
Cannabis rule: Recreational use is legal, but MRTMA says nothing requires an employer to permit or accommodate use, and employers may discipline for violating a drug policy or for working under the influence. The medical act gives no private-employment protection (Casias). Zero-tolerance is lawful.
Testing rules: No testing statute. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Nothing to work around.
Minnesota Off-Duty Use Protected; Strict Testing Law
Law: Minn. Stat. § 181.950–.957 (DATWA); § 181.938 (lawful consumable products); eff. Aug. 1, 2023
Cannabis rule: Cannabis is a lawful consumable product: employers can’t refuse to hire or discipline for off-duty, off-premises use, and cannabis was removed from the definition of “drug” for most testing. Employers may still prohibit use, possession or impairment at work, and may test for cannabis only in listed positions: safety-sensitive positions (where impairment threatens health or safety of the employee or others, a category that covers techs operating vehicles and power tools), peace officers, firefighters, child or vulnerable-adult care, positions requiring a CDL or federal testing, and those funded by federal grants. Medical cardholders have additional status protection.
Testing rules: DATWA governs all testing: written policy, confirmation at a licensed lab, employee notice and right to explain within three working days, no random testing except safety-sensitive positions, no termination on a first positive unless the employee refuses or fails to complete rehab (employers may suspend without pay). Pre-employment only after a conditional offer.
Trades note: Designate field positions safety-sensitive in the written policy; without that designation you can’t test a tech for cannabis at all.
Mississippi Employer’s Call
Law: Miss. Code § 71-3-201 to -225 (Drug-Free Workplace); § 41-137-55 (medical cannabis, 2022)
Cannabis rule: Recreational use is illegal. The 2022 medical cannabis act expressly says employers need not accommodate use, may test and may discipline cardholders, and preserves the comp presumption.
Testing rules: Voluntary drug-free workplace program earns a 5% comp discount; a post-accident positive is presumed to have caused the injury. Procedure rules (§ 71-7-1 et seq.) apply to employers that test: written policy, 30-day notice, confirmation, certified lab.
Trades note: Follow the § 71-7 notice period before first testing.
Missouri Medical Patients Protected
Law: Mo. Const. art. XIV § 1.7 (medical) and § 2 (adult use, Dec. 2022)
Cannabis rule: Recreational use is legal, but Amendment 3 says employers may still prohibit use and test for it. Medical cardholders can’t be fired or penalized for status, off-premises lawful use, or a positive test unless they used or were impaired at work, or the employer would lose a federal benefit, or the position is one where a positive test is grounds under federal law. The Missouri Court of Appeals confirmed the medical protection is privately enforceable (2024).
Testing rules: No testing statute. A post-accident positive reduces comp benefits 50% and forfeits them entirely if the drug caused the injury (§ 287.120.6). No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: The 50% comp reduction is automatic on a positive, which is why Missouri shops test every post-accident.
Montana Off-Duty Use Protected (Lawful Product)
Cannabis rule: Marijuana is a lawful product: employers can’t discriminate for off-duty, off-premises use, unless use affects job performance or safety, conflicts with a bona fide occupational qualification, or violates a substance-abuse policy the employee agreed to, and employers may act on impairment at work. Medical cardholders have parallel protection.
Testing rules: Testing is allowed only for hazardous work environments, security, public-safety, fiduciary and vehicle-operation positions, under a written policy with 60 days’ notice, confirmation testing, right to a retest and right to explain. Random testing of those positions is allowed.
Trades note: Techs operating vehicles and working with electricity and gas are hazardous-work positions, so a signed substance-abuse policy restores most employer rights.
Nebraska Testing Procedures Required (Lab Rules)
Law: Neb. Rev. Stat. § 48-1901 to -1910; Initiative 437/438 (medical, 2024)
Cannabis rule: Recreational use is illegal. The 2024 medical cannabis initiatives (rules adopted 2025) include no employment protection; employers may test and act.
Testing rules: Employers with six or more employees that test must use confirmation testing by GC/MS at a licensed lab, preserve positive samples 180 days, and keep results confidential. Otherwise all testing is allowed.
Trades note: Use a certified lab; the 180-day retention rule is on the lab, not you.
Nevada Pre-Employment Positive Protected
Law: NRS 613.132 (AB 132, eff. Jan. 1, 2020); NRS 613.333; NRS 678C.850 (medical)
Cannabis rule: Employers may not refuse to hire an applicant because of a positive pre-employment marijuana test, except firefighters, EMTs, positions requiring the applicant to operate a motor vehicle (and federal testing applies), and any position the employer determines could adversely affect others’ safety. An employee tested in the first 30 days may rebut with a second test at their own expense. Off-duty recreational use is not otherwise protected (Ceballos v. NP Palace, Nev. 2022, held marijuana isn’t a “lawful product”). Medical cardholders must be reasonably accommodated unless it threatens safety, the position is safety-sensitive, or the employer would lose a federal benefit.
Testing rules: No procedure statute. Beyond AB 132, no statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Every tech who drives a company van is in the motor-vehicle exception; office hires aren’t.
New Hampshire Employer’s Call
Law: RSA 126-X:3(III)(c) (therapeutic cannabis)
Cannabis rule: Recreational use is illegal (decriminalized). The therapeutic cannabis law says nothing requires an employer to accommodate use, and employers may discipline for a positive test.
Testing rules: No testing statute. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Nothing to work around.
New Jersey Off-Duty Use Protected
Law: N.J.S.A. 24:6I-52 (CREAMMA, Feb. 2021); N.J.S.A. 24:6I-6.1 (medical)
Cannabis rule: Employers may not refuse to hire, fire or penalize anyone solely for cannabis use or a positive THC test. Employers may maintain drug-free policies, prohibit use and impairment at work, and test (pre-employment, random, reasonable-suspicion, post-accident), but discipline requires a positive test plus a physical evaluation documenting impairment, which the statute assigns to a Workplace Impairment Recognition Expert (WIRE). The Cannabis Regulatory Commission has never finalized WIRE standards, so its 2022 interim guidance applies: use a trained observer and a standardized “Reasonable Suspicion Observation Report.” Federally regulated drivers are excepted. Bills to exempt construction and other safety-sensitive positions have been introduced in every session since 2022 and remain pending. Medical cardholders have additional protection.
Testing rules: No procedure statute. Beyond CREAMMA, no statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Train a lead or manager as the observer and use the CRC’s report form; a positive test alone will lose at the Division on Civil Rights.
New Mexico Medical Patients Protected
Law: NMSA § 26-2B-9 (Compassionate Use Act, 2019); Cannabis Regulation Act (2021)
Cannabis rule: Recreational use is legal (2021) with no employment protection. Medical cardholders can’t be fired or penalized for status or a positive test unless they used or were impaired at work, the position is safety-sensitive (one where impairment would constitute an immediate or direct threat of injury or death), or the employer would lose a federal benefit.
Testing rules: No testing statute. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Techs on ladders and in crawlspaces with gas and electricity are safety-sensitive; designate it in writing.
New York Off-Duty Use Protected; Testing Mostly Barred
Law: N.Y. Labor Law § 201-d (as amended by MRTA, Mar. 31, 2021)
Cannabis rule: Cannabis is a protected off-duty activity: employers may not refuse to hire, fire or discipline for off-duty, off-premises use, and the Department of Labor’s guidance says employers may not test for cannabis at all, except where federal or state law requires it (DOT drivers), where the employer would lose a federal contract or funding, or where the employee shows specific articulable symptoms of impairment that decrease performance or interfere with safety obligations (odor alone doesn’t count). Employers may still prohibit use and possession during work hours, on premises and in company vehicles. Medical patients are protected as disabled under the Human Rights Law.
Testing rules: No procedure statute; the cannabis guidance is the practical restriction. Testing for other drugs remains lawful.
Trades note: Drop THC from the pre-employment panel for non-DOT techs; document impairment with two observers before any reasonable-suspicion test.
North Carolina Testing Procedures Required
Law: N.C.G.S. § 95-230 to -235 (Controlled Substance Examination Regulation Act)
Cannabis rule: All cannabis is illegal except low-THC products. No protections.
Testing rules: Any employer that tests must use an approved laboratory, confirmation testing for positives, chain-of-custody procedures, allow the employee to retest the sample at their expense within 90 days, and keep samples 90 days. Civil penalties up to $250 per affected employee (max $1,000) for violations. All testing types allowed.
Trades note: Use a certified lab; keep the retest window.
North Dakota Employer’s Call
Law: N.D.C.C. § 19-24.1-34 (medical)
Cannabis rule: Recreational use is illegal (ballot measures failed 2018, 2022, 2024). The medical law says nothing requires an employer to accommodate use or permit a positive test; employers may act freely.
Testing rules: No testing statute. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Nothing to work around.
Ohio Employer’s Call
Law: R.C. § 3780.35 (adult use, Dec. 2023); § 3796.28 (medical); BWC Drug-Free Safety Program
Cannabis rule: Recreational and medical use are legal, but both statutes say in terms that employers may refuse to hire, discharge or discipline for use, possession or distribution, may keep zero-tolerance policies, need not accommodate, and that a person fired for use is ineligible for unemployment. Employers face no cause of action.
Testing rules: BWC’s voluntary Drug-Free Safety Program earns a 4% (basic) or 7% (advanced) premium rebate for a written policy, employee education, supervisor training and testing. A post-accident positive creates a rebuttable presumption of causation if the policy posted the warning (§ 4123.54).
Trades note: Ohio is the most employer-protective legal-weed state; the DFSP rebate is on top.
Oklahoma Medical Patients Protected; Procedures Required
Law: 63 O.S. § 427.8; 40 O.S. § 551–565 (Standards for Workplace Drug and Alcohol Testing Act)
Cannabis rule: Recreational use is illegal (SQ 820 failed 2023). Medical license holders can’t be refused hire, fired or penalized for status or a positive test unless they used or possessed at work, were impaired, the employer would lose a federal benefit, or the position is safety-sensitive as designated in writing (operating vehicles, power tools or heavy machinery, working with electricity, gas or at heights, and anything else where impairment could affect safety). Oklahoma’s list is the broadest in the country.
Testing rules: Any employer that tests must adopt a written policy with 10 days’ notice, use a licensed lab with confirmation testing, allow a retest, and may test pre-employment, random, reasonable-suspicion, post-accident, return-to-duty and follow-up. Employer pays. Violations carry damages and fees.
Trades note: Put every field position in the safety-sensitive list in the written policy; the statute practically hands it to trades employers.
Oregon Employer’s Call
Law: Emerald Steel v. BOLI (Or. 2010); ORS 475C.005 et seq.
Cannabis rule: Recreational and medical use are legal, but the Oregon Supreme Court held in Emerald Steel that employers need not accommodate medical marijuana, and Measure 91 preserves employer policies. Bills to protect off-duty use have failed in every session since 2017.
Testing rules: No testing statute (a 2025 bill to require written policies died). Oregon’s constitutional privacy provision hasn’t been applied to private testing. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Nothing to work around.
Pennsylvania Medical Patients Protected (Philly/Pittsburgh Bans)
Cannabis rule: Recreational use is illegal. Certified medical patients can’t be fired or discriminated against solely for status, and federal courts have allowed patients to sue over positive-test firings (Palmiter, 2021). Employers may bar patients from operating high-voltage electricity or other public utility work, working at heights or in confined spaces, and any task the employer deems life-threatening while under the influence, and may discipline anyone impaired at work (blood THC above 10 ng/ml). Philadelphia and Pittsburgh ban pre-employment marijuana testing for most jobs, excepting safety-sensitive positions (vehicles, heavy machinery, power or public utility work, supervision of children or patients).
Testing rules: No testing statute. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Pennsylvania techs on heights or high voltage fall squarely in the carve-outs; the problem is the office hire in Philadelphia.
Rhode Island Off-Duty Use Protected; Strict Testing Law
Cannabis rule: Employers may not fire or discipline for off-duty, off-premises use or a positive THC test, except: positions with federal testing requirements, federal contractors, and hazardous, dangerous or essential-to-public-welfare jobs where the employer requires abstinence for 24 hours before a shift under a written policy (vehicles, machinery, heights, electrical and gas work qualify). Employers may always act on impairment at work. Medical cardholders have parallel protection (Callaghan v. Darlington Fabrics, 2017).
Testing rules: Strictest testing law in the Northeast: current employees may be tested only on reasonable suspicion (no random, except federal), within a program that offers rehab and bars termination on a first positive; applicants only after a conditional offer with the right to a retest. Confirmation and licensed lab required.
Trades note: Adopt the 24-hour abstinence policy for field positions; without it the off-duty protection covers your techs.
South Carolina Employer’s Call
Law: S.C. Code § 38-73-500; § 41-1-15
Cannabis rule: All cannabis is illegal except low-THC CBD. No protections.
Testing rules: Voluntary drug-free workplace program earns a 5% comp discount. A post-accident positive presumes the injury was caused by intoxication (§ 42-9-60). No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Take the 5%.
South Dakota Medical Patients Protected
Law: SDCL § 34-20G-22; IM 26 (2020)
Cannabis rule: Recreational use is illegal (measures failed 2022 and 2024). Medical cardholders can’t be penalized for status or a positive test unless they used or were impaired at work, or the position is safety-sensitive, where the employer may act on metabolites alone. No accommodation of on-site use required.
Testing rules: No testing statute. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Designate field positions safety-sensitive.
Tennessee Employer’s Call
Law: Tenn. Code § 50-9-101 to -114 (Drug-Free Workplace Program)
Cannabis rule: All cannabis is illegal except low-THC CBD. No protections.
Testing rules: Voluntary certified Drug-Free Workplace Program earns a 5% comp discount: written policy with 60-day notice, pre-employment, reasonable-suspicion, post-accident, routine fitness-for-duty and follow-up testing, supervisor training and employee education. A post-accident positive presumes the injury was caused by the drug and forfeits benefits; the employee bears the burden to rebut.
Trades note: The presumption plus the discount make Tennessee’s program worth the paperwork.
Texas Employer’s Call (Policy Required With WC)
Law: Tex. Labor Code § 411.091–.093; § 406.032 (comp intoxication defense); Compassionate Use Program
Cannabis rule: All cannabis is illegal except the low-THC Compassionate Use Program, which gives no employment protection. Employers may test and act freely.
Testing rules: Employers with 15 or more employees that carry workers’ comp coverage must adopt a written drug-abuse policy and distribute it. Otherwise no statute restricts testing. A post-accident positive creates a rebuttable presumption of intoxication (§ 401.013), and intoxication bars comp benefits entirely (§ 406.032). Unemployment is denied for a positive under a written policy.
Trades note: The comp defense is the whole ballgame: test post-accident within hours. See our Texas guide.
Utah Employer’s Call (Public Employers Excepted)
Law: Utah Code § 34-38-1 to -15 (Drug and Alcohol Testing); § 26B-4-213 (medical)
Cannabis rule: Recreational use is illegal. The medical cannabis law protects only public employees; private employers may test and act, except that firing a medical cardholder solely for status could raise a disability issue.
Testing rules: Voluntary safe harbor: a written policy under § 34-38 (distributed, confirmation testing, management must also be subject to testing, employer pays) immunizes the employer, makes a positive test misconduct for unemployment, and a post-accident positive presumes causation for comp.
Trades note: Include the owner in the random pool or the safe harbor doesn’t apply.
Vermont Testing Procedures Required (No Random)
Law: 21 V.S.A. § 511–520; 18 V.S.A. § 4230a(e)
Cannabis rule: Recreational use is legal (2018) but the statute expressly preserves employer policies; no off-duty protection. Medical patients get no statutory employment protection.
Testing rules: Strictest testing law in the country alongside Maine’s: no random or suspicionless testing of employees (except federal), no post-accident testing without probable cause, applicants only after a conditional offer with 10 days’ written notice; employees only on probable cause under a written policy that includes an EAP or rehab, and an employee who tests positive and completes rehab can’t be fired for the first positive. Confirmation by GC/MS, employee pays nothing, criminal penalties for violations.
Trades note: You cannot run a random program in Vermont; the policy is probable cause, documented.
Virginia Medical Cannabis Oil Protected
Law: Va. Code § 40.1-27.4 (July 1, 2021); § 65.2-813.2 (drug-free workplace)
Cannabis rule: Recreational use is legal (possession, 2021) with no retail market and no employment protection; employers may test and act. Employees with a written certification for medical cannabis oil can’t be fired or penalized for lawful off-duty use, though employers may act on impairment at work, need not permit possession at work, and may act where a federal requirement or contract requires. Defense-industrial employers are exempt.
Testing rules: Voluntary drug-free workplace program earns a 5% comp discount. A post-accident positive is a comp defense if intoxication caused the injury (§ 65.2-306). No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Ask for the practitioner certification before acting on a medical-oil positive.
Washington Pre-Employment THC Testing Barred
Law: RCW 49.44.240–.250 (SB 5123, eff. Jan. 1, 2024)
Cannabis rule: Employers may not refuse to hire based on off-duty cannabis use or a pre-employment test that detects non-psychoactive metabolites, except for positions requiring federal testing or a federal security clearance, law enforcement, fire, first responders, corrections, airline and aerospace, and safety-sensitive positions where impairment poses a substantial risk of death, as long as the employer identified the position as safety-sensitive before the applicant applied. Once hired, employees have no off-duty protection; random, reasonable-suspicion and post-accident testing remain lawful. Medical patients get no separate right (Roe v. TeleTech, 2011).
Testing rules: No procedure statute. Beyond SB 5123, no statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Write “safety-sensitive” into every field-position posting before it goes up, or switch the pre-employment panel to oral fluid, which detects active THC.
West Virginia Medical Patients Protected
Law: W. Va. Code § 16A-15-4; § 21-3E (Safer Workplace Act)
Cannabis rule: Recreational use is illegal. Certified medical patients can’t be fired or discriminated against solely for status; employers may discipline for impairment (blood THC above 3 ng/ml), may bar patients from high-voltage, utility, heights, confined-space and other life-threatening tasks, and need not accommodate on-site use.
Testing rules: The Safer Workplace Act (2017) lets employers test pre-employment, random, reasonable-suspicion and post-accident under a written policy, and a positive under a compliant policy is misconduct for unemployment and a comp presumption (§ 23-4-2).
Trades note: Follow the Safer Workplace Act policy template for the unemployment and comp presumptions.
Wisconsin Employer’s Call
Law: Wis. Stat. § 111.35 (lawful products, excludes illegal drugs); § 102.58 (comp)
Cannabis rule: All cannabis is illegal except low-THC CBD. The lawful-products statute doesn’t cover marijuana. No protections.
Testing rules: No testing statute. A post-accident positive under a drug policy reduces comp benefits 15% and, if the intoxication caused the injury, bars them (2015 amendments). No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: The 15% automatic reduction makes post-accident testing standard.
Wyoming Employer’s Call
Law: Wyo. Stat. § 27-14-102(a)(xi)(B) (comp); § 27-3-311 (unemployment)
Cannabis rule: All cannabis is illegal. No protections.
Testing rules: No testing statute. A post-accident positive bars comp benefits if intoxication caused the injury, and a positive under a written policy is misconduct for unemployment. State drug-free workplace program offers comp discounts through the state fund. No statute restricts private-employer drug testing; pre-employment, random, reasonable-suspicion and post-accident testing are all lawful with a written policy applied consistently.
Trades note: Nothing to work around.
Statutes, agency guidance and leading cases current as of October 2026, compiled from state codes, labor and workers’ compensation agency materials and practitioner surveys. Comp discount percentages are statutory and may be applied differently by individual carriers. Local ordinances (Philadelphia, Pittsburgh, Atlantic City) are noted where they affect private employers. This is a survey for operating a business, not advice on a specific policy or employee.
Running the Business
- The comp side: contractor insurance requirements by state and what an OSHA inspection looks like for a trades business cover the post-accident reporting rules the testing policy has to fit inside.
- The van: USDOT number requirements for service vans tells you whether you have DOT-covered drivers; GPS tracking laws for technicians covers the telematics that document the incident.
- Hiring: background checks and fair chance laws and E-Verify requirements by state for the rest of the onboarding packet.
- If you fire him: final paycheck laws by state.
Document the Incident Before the Test Result Comes Back
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FAQ
Can I drug test employees for marijuana in a state where it’s legal?
In most of them, yes. Legalization statutes in Alaska, Colorado, Delaware, Maine, Maryland, Massachusetts, Michigan, Missouri, Ohio, Oregon, Virginia and Arizona expressly preserve employer drug-free policies, and employers there may test and discipline for any positive. The exceptions are New York (testing for cannabis is barred except for federal requirements or documented impairment), New Jersey (a positive alone can’t support discipline without an impairment evaluation), California and Washington (no acting on non-psychoactive metabolite tests, with construction and safety-sensitive carve-outs), and Minnesota, Montana, Rhode Island, Connecticut, Illinois and DC, which protect off-duty use but allow testing and discipline for designated safety-sensitive positions or under a written policy. Nevada bars rejecting applicants for a positive pre-employment test except for drivers and safety positions.
What counts as a safety-sensitive position for a trades business?
The statutes that define it (DC, Minnesota, Oklahoma, Arizona, Arkansas, New Mexico, South Dakota, Washington) list operating motor vehicles or heavy machinery, using power tools, working with electricity, natural gas, hazardous materials or refrigerants, working at heights or in confined spaces, and any job where impairment could cause injury or death. That covers nearly every field technician, installer and helper. It does not cover dispatchers, bookkeepers or inside sales. The designation has to be made in writing, in the job description and (in Washington) the posting, before the applicant applies, and applied consistently.
Does a positive post-accident drug test void a workers’ comp claim?
In many states it creates a presumption that the drug caused the injury, which the employee then has to rebut: Alabama, Arkansas, Florida, Georgia, Kentucky, Mississippi, South Carolina, Tennessee and Virginia (under their drug-free workplace programs), Ohio (if the policy posts the statutory warning), Texas, Louisiana, Kansas, Oklahoma, Utah, Idaho, West Virginia and Wyoming. Missouri reduces benefits 50% automatically and bars them if the drug caused the injury; Wisconsin reduces 15%. In the rest, intoxication is an affirmative defense the employer must prove caused the injury, and a THC metabolite positive alone is weak evidence of impairment. Every presumption depends on a written policy the employee acknowledged and a test within hours of the incident.
Which states give a workers’ comp discount for drug testing?
Georgia (7.5%), Ohio (4% basic, 7% advanced), and 5% in Alabama, Arkansas, Florida, Kentucky, Mississippi, South Carolina, Tennessee and Virginia; Hawaii gives at least 5% for a safety and health program, and Idaho and Wyoming offer credits through their state programs. Certification generally requires a written policy with 60 days’ notice, pre-employment, reasonable-suspicion, post-accident, fitness-for-duty and follow-up testing, a certified lab with MRO review, supervisor training and employee education, renewed annually.
What’s the difference between a urine test and an oral-fluid test for THC?
A urine test detects THC-COOH, a non-psychoactive metabolite that stays positive for roughly three days after a single use and up to a month or more for daily users; it proves past use, not impairment. An oral-fluid (saliva) test detects parent THC with a window of about 24 hours, which tracks recent use closely enough that California and Washington treat it as a test for active THC that employers may still act on. Oral fluid is also collected under observation in the field (no bathroom, no substitution), has been DOT-authorized since 2023, and is the better choice for post-accident and reasonable-suspicion testing everywhere. Hair tests reach back 90 days and are the least defensible in the protection states.
Can I refuse to hire a medical marijuana cardholder?
Not solely for cardholder status in Arizona, Arkansas, Connecticut, Delaware, Illinois, Maine, Minnesota, Missouri, Nevada, New Jersey, New Mexico, New York, Oklahoma, Pennsylvania, Rhode Island, South Dakota, Virginia (cannabis oil) and West Virginia, and Massachusetts requires an interactive process under disability law. Every one of those states allows refusing or excluding cardholders from safety-sensitive positions, acting on use or impairment at work, and complying with federal requirements. In Colorado, Michigan, Ohio, Oregon, Washington, Montana (outside the lawful-products rule), California (construction), Florida, Kentucky, Alabama, Mississippi and the no-program states, cardholder status gives no employment protection.
Do I have to have a drug testing policy at all?
Federal law requires one only for federal contractors and grantees over $100,000 (Drug-Free Workplace Act), and for employers with DOT-regulated drivers. Texas requires a written drug-abuse policy for employers with 15 or more employees that carry workers’ comp coverage. Maine requires Department of Labor approval of the policy before any testing. Everywhere else a policy is optional, but every comp presumption, unemployment denial and safe-harbor statute depends on having a written one that employees acknowledged, so a shop that tests without one is getting the cost and none of the protection.
Can I randomly drug test my technicians?
Not in Vermont (no random testing of any employee except under federal rules) or Rhode Island (reasonable suspicion only). In Maine, Minnesota, Montana and Connecticut, random testing is limited to safety-sensitive or hazardous positions, and Connecticut’s must be designated by the Labor Department. Massachusetts and California courts allow it only for safety-sensitive positions on privacy grounds. Iowa and Oklahoma allow it under a written policy with a neutral selection method. Everywhere else random testing is lawful with a policy, and for DOT drivers it’s mandatory at a 50% annual rate.
Did federal rescheduling change what employers can do?
No. The DEA’s April 2026 rule moved FDA-approved and state-licensed medical marijuana to Schedule III; recreational marijuana remains Schedule I pending a separate hearing. Schedule III substances (codeine combinations, ketamine, anabolic steroids) are still controlled, still on standard test panels and still grounds for discipline under a policy. DOT’s panel is set by HHS and unchanged. State employment protections were written independently of federal scheduling. The one practical effect is that more employees will hold medical cards and request accommodation, which in the medical-protection states triggers the interactive process.
What should I do when a tech tests positive?
Confirm the result through a Medical Review Officer, who screens for prescriptions and medical-cannabis cards before reporting. Check the state: in the protection states, confirm the position was designated safety-sensitive in writing or that you have documented impairment. In the first-positive states (Minnesota, Vermont, Rhode Island, Maine) you can’t terminate on a first positive if the employee accepts rehabilitation. Put the result in writing to the employee (required in Maryland, Iowa, Connecticut, Hawaii) and give the retest opportunity where the statute provides one. Then apply the policy as written and as you’ve applied it to everyone else; inconsistent enforcement is what turns a lawful termination into a discrimination claim.
Bottom Line
The law has moved from “can I test” to “can I act on the result,” and the answer in every protection state turns on two things you control: whether the position was designated safety-sensitive in writing before the hire, and whether the test measured active THC or a two-week-old metabolite. Get those right and a trades shop keeps its testing program in all 51 jurisdictions, including New York and California, for the people who drive the vans and climb the ladders. Get them wrong and the positive test is worthless in a third of the country and a lawsuit in several states.
In the 13 discount states, certify the program and take the 5–7.5% off the comp bill; the presumption that comes with it is worth more than the discount. Everywhere, test post-accident within hours with oral fluid, write the reasonable-suspicion form before you order the test, and run the medical cardholder through the MRO and an interactive process before you act. The GPS log and the dispatch timestamps from the job are the other half of the incident file.
