Can I be fired for off-duty marijuana use in California?

Two Different Tests, and Only One of Them Still Counts

This is the heart of the law, and it is the part employers get wrong most often, usually because nobody updated the drug testing contract.

So the useful question after a positive test is not whether you used. It is what the test actually measured, and whether anyone observed anything at work at all. If the only evidence is a lab result from a panel that detects metabolites, the employer is standing on the part of the ground the legislature took away.

What SB 700 Added

AB 2188 dealt with testing. SB 700 dealt with the interview. An employer generally may not ask you about your prior cannabis use, which closes the obvious workaround of simply asking the question instead of running the test. It also means a job offer withdrawn after you answered honestly about the past is worth a conversation.

The Carve Outs, in Plain Terms

The exceptions are real. They are also narrower than the handbook usually claims, and the ones that bite tend to attach to the specific job rather than to the whole company.

• Building and construction trades. Written into the statute directly.
• Positions requiring a federal background investigation or security clearance. The trigger is the clearance requirement for that role, not the fact that the employer happens to hold federal contracts.
• Testing required by federal law, regulation, or a condition of federal funding or contracting. Drivers regulated by the Department of Transportation are the example most people meet.

If your employer is relying on one of these, the question to ask is which one, and why it applies to your position specifically. A company wide zero tolerance policy is not itself an exception.

Medical Cannabis Is a Separate Question

People often arrive assuming a doctor’s recommendation settles it. It does not, and the two questions pull apart.

Off duty protection now applies to you the same way it applies to everyone else, and that is the stronger ground. Whether an employer has to accommodate medical cannabis use, as opposed to simply leaving your off duty life alone, is a different analysis that runs through disability accommodation rather than through AB 2188. Nothing in any of it protects use or impairment at work. If your situation turns on accommodation rather than on off duty use, say so early, because it changes which argument you are making.

If You Are Asked to Take a Test

• Ask, in writing if you can, what is being tested for and who is administering it. The answer tells you which side of the line the employer is on.
• Do not simply refuse. A refusal is usually treated as a positive result, and it hands the employer a reason that has nothing to do with cannabis.
• Keep every piece of paper, including the consent form and the chain of custody documents.
• Write down who told you, when, and what reason they gave, the same day.
• If you hold a safety sensitive or federally regulated position, get advice before the test rather than after it.

What to Save

• The drug testing policy as written, photographed from the handbook.
• The test result itself, including which panel was run.
• Any message explaining why you were tested, especially if it names a reason.
• Your performance record from before the test.
• The termination or rescission letter, with its date.
• Copies kept somewhere that is not a company device or account.