California Drug testing and marijuana — Ask HR AI

What changes in California

Cannabis posture: AB 2188 off-duty protection + non-psychoactive metabolite rule (2024). AB 2188 (effective Jan 1, 2024) prohibits adverse action based on off-duty cannabis use or on a test detecting only non-psychoactive metabolites. SB 700 bars asking about prior cannabis use. DOT-regulated and certain federal-contractor roles are carved out.

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Practitioner steps for California

Step 1. Match your California drug policy to the current state posture: AB 2188 off-duty protection + non-psychoactive metabolite rule (2024).
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 CA 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 California statutes and references

Cal. Civ. Code §1786 (ICRAA)
Cal. Gov. Code §12952
Cal. Gov. Code §12954
Lab. Code §432.3
SB 1162 (2023)
15 U.S.C. §1681 et seq. (federal FCRA)

Frequently asked (federal + California 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 California.