Washington Drug testing and marijuana — Ask HR AI

What changes in Washington

Cannabis posture: SB 5123 (2024) + SB 5793 (2026). SB 5123 prohibits pre-employment hiring decisions based on a test detecting only non-psychoactive cannabis metabolites. SB 5793, effective March 7, 2026, narrows the safety-sensitive carve-out to roles where impairment poses a substantial risk of death or serious bodily injury.

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"We hire in California, Washington, and Texas — what should our marijuana testing policy look like? Focus on Washington."

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Practitioner steps for Washington

Step 1. Match your Washington drug policy to the current state posture: SB 5123 (2024) + SB 5793 (2026).
Step 2. Carve out safety-sensitive roles explicitly — federal DOT rules override state cannabis protections.
Step 3. Test based on impairment, not off-duty use, wherever WA protects lawful off-duty conduct.
Step 4. Retain chain-of-custody records; positive results based on THC alone are increasingly hard to defend without objective impairment evidence.

Applicable Washington statutes and references

RCW §49.94
RCW §49.58.100
SB 5123 (2024)
SB 5793 (2026)
15 U.S.C. §1681 et seq. (federal FCRA)

Frequently asked (federal + Washington overlay)

Can employers still drug-test for marijuana?

Yes, in most states. But thirteen states restrict pre-employment testing or protect off-duty use, with safety-sensitive and federal-mandate carve-outs that keep DOT testing unchanged.

What is a non-psychoactive cannabis metabolite?

Carboxy-THC, the metabolite detected by standard urine THC tests, remains in the body for days or weeks after psychoactive THC has cleared. California and Washington treat that positive as no evidence of impairment.

Do off-duty cannabis laws apply to DOT drivers?

No. Every state with an off-duty protection statute carves out DOT 49 CFR Part 40 testing and federally regulated safety-sensitive positions.

What is reasonable-suspicion testing?

Testing based on documented, articulable observations of impairment — appearance, behavior, speech, odor — by a trained supervisor, not on rumor or off-duty conduct.

Same topic in another state

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Ask HR AI is not legal advice. Confirm any final answers or suggested actions with your employment legal counsel before acting on them.

Drug testing and marijuana in Washington.