Introduction: Finding the Balance
AB 2188 doesn’t create a free-for-all. Instead, it establishes a carefully crafted balance:
-Employers CAN maintain drug-free workplaces
-Employers CANNOT discriminate based solely on off-duty cannabis use
-Employees CANNOT be impaired at work
-Employees CANNOT be punished for what they lawfully do at home
What Employers CAN Still Do Under AB 2188
| Action | Status |
| Prohibit cannabis possession on premises | Permitted |
| Prohibit cannabis use during work hours | Permitted |
| Conduct compliant drug testing | Permitted |
| Take action against impaired employees | Permitted |
| Test for psychoactive THC | Permitted |
What Employers CANNOT Do
| Action | Status |
| Fire based solely on off-duty cannabis use | Not Permitted |
| Ask about prior cannabis use | Not Permitted |
| Use urine/hair tests showing only metabolites as termination basis | Not Permitted |
Compliant vs. Non-Compliant Testing
| Compliant Methods | Non-compliant Methods |
| Oral fluid/saliva tests (detect parent THC) | Standard urine tests (detect only THC-COOH) |
| Performance-based impairment tests | Hair follicle tests |
| Blood tests for active THC | Any test showing only historical use |
Federal vs. State Law Conflicts
When federal law applies (DOT-regulated positions, federal contractors, security clearances), federal law prevails.
Key Takeaways
- BOTH employer safety interests AND employee privacy rights are valid
- Off-duty use is protected; on-duty impairment is NOT
- Testing methodology determines compliance
- Documentation of impairment is critical
- Federal exceptions create different rules for some
Disclaimer: This article provides general information and should not be considered legal advice. Consult with an employment attorney about your specific situation.
If you have been terminated or penalized by your employer for off-duty marijuana use, please call our marijuana assistance hotline at (949) 620-0718.


