Washington, D.C. cannabis employment and drug testing law
Hiring-stage protections only. Most employers may test for marijuana only after a conditional job offer; broader employment protections passed in 2022 have not been funded. Status: Hiring-stage protections only — State law limits some pre-employment testing or hiring decisions, but not discipline of current employees generally.
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Key Takeaways
- Status: Hiring-stage protections only — State law limits some pre-employment testing or hiring decisions, but not discipline of current employees generally.
- Main source: D.C. Code § 32-931.
- Federal testing rules (DOT and federal workplace programs) apply regardless of state law.
What the law protects
- D.C. Code § 32-931 bars employers from testing an applicant for marijuana until after a conditional offer of employment, unless otherwise required by law.
Exceptions and limits
- The same chapter says it does not affect compliance with employer workplace drug policies, require accommodation of marijuana in the workplace or at any time during employment, interfere with federal employment contracts, or prevent an employer from denying a position based on a positive test.
- The broader Cannabis Employment Protections Amendment Act (D.C. Code § 32-951.02) is marked “Not Funded” in the official D.C. Code, so those protections have not taken effect.
Drug testing rules
- Testing after a conditional offer and testing required by federal or D.C. law remain allowed.
Notes and history
- Some secondary lists count D.C. as a full employment-protection jurisdiction; the official Code shows the broader law has not been implemented.
Federal law and testing
Federal rules still apply. Under the U.S. DOT’s testing rules, a Medical Review Officer must not verify a test as negative because a physician recommended a Schedule I drug under a state “medical marijuana” law, and must not accept use of hemp or other non-prescription marijuana-related products as an explanation (49 CFR § 40.151(e)–(f)). That covers safety-sensitive transportation workers regardless of state law.
Federal workplace drug testing programs follow HHS Mandatory Guidelines, which set the cannabis testing panel and cutoffs for urine and oral fluid (Federal Register, March 13, 2026). Most state protections above include an exception where federal law, a federal contract, or federal funding requires otherwise.
For how long cannabis can show up on each test type, see our drug testing guide and the detection window explainer.
Common questions
Can you be fired for using cannabis in Washington, D.C.?
Washington, D.C.’s protection (D.C. Code § 32-931) mainly applies at the hiring stage. It does not generally stop an employer from disciplining a current employee for impairment or a policy violation, and it has exceptions for listed safety roles and federal requirements.
Can Washington, D.C. employers still drug test for THC?
Testing is limited in some situations but not banned outright. Read the testing section above for what D.C. Code § 32-931 allows, and remember that federally required tests (for example DOT-regulated jobs) are unaffected.
Does Washington, D.C. law protect CDL drivers or federal workers?
No state law overrides federal testing rules. DOT-regulated employees remain subject to federal cannabis testing, and a state medical recommendation is not an accepted explanation for a positive result.
Sources
- government D.C. Code § 32-931, Prohibition on pre-employment marijuana testing (Council of the District of Columbia) ↗ accessed 2026-10-03
- government D.C. Code § 32-951.02, Cannabis Employment Protections (Council of the District of Columbia) ↗ accessed 2026-10-03
- government eCFR, 49 CFR § 40.151 — What are MROs prohibited from doing as part of the verification process? (U.S. DOT) ↗ accessed 2026-10-03
- government Federal Register, Mandatory Guidelines for Federal Workplace Drug Testing Programs: Authorized Testing Panels (March 13, 2026) ↗ accessed 2026-10-03