California Governor Gavin Newsom has signed the "No Robo Bosses Act," a landmark state law that prevents employers from relying solely on artificial intelligence to fire or discipline workers. The measure also restricts businesses from using AI as a "principal tool" in these decisions, marking a significant step in regulating workplace automation.

The law arrives after Newsom vetoed an earlier version of the bill last October, even though it had cleared both legislative chambers with overwhelming majority support. Newsom, who has increasingly positioned himself as an AI watchdog, has now reversed course with this signing.

Because this report comes from a single source, there are no contrasting accounts to compare. The law's practical impact will depend on how state regulators define "principal tool" and how strictly employers' use of AI in personnel decisions is scrutinized.