Assembly Bill 2188, signed by Gov. Gavin Newsom, prevents employees from setting conditions of employment based on cannabis use while they're away from work. It also prevents them from hiring or firing based on that.

However, there are exemptions to the law. Employers can test staff who work in construction or in positions that require a federal background investigation or clearance.

The law still prevents employees from using marijuana while at work, working while impaired, and being in possession of marijuana while on the job.

Newsom signed other similar bills into law. Senate Bill 1186 prevents local governments from banning deliveries of medical marijuana, while Assembly Bill 1706 will allow people to get old marijuana conviction records sealed or cleared.

The laws are expected to go into effect in 2024..