TL;DR
California's No Robo Bosses Act (SB 947), signed by Governor Gavin Newsom on September 30, 2026, becomes the first U.S. law barring employers from using AI as the sole or primary driver of worker terminations and discipline.
What happened
- SB 947, authored by State Senator Jerry McNerney, prohibits California employers from relying "primarily" on automated decision-making systems to fire or discipline workers.
- Employers that do use AI primarily in such decisions must now have a human reviewer corroborate the decision using managerial evaluations, peer reviews, or personnel files.
- Affected workers must receive written notice that AI was primarily used, a description of the employee data involved, and a human contact who can explain the decision.
- Newsom had vetoed a 2025 version of the bill over broad pre-notification requirements; McNerney returned in February 2026 with a narrowed bill that dropped pre-notification and removed protections for gig workers.
- The California Federation of Labor Unions, AFL-CIO was the lead sponsor; tech and commerce lobbying groups opposed the bill up to signing.
Why it matters
- First law of its kind in the U.S., setting a precedent that other states and potentially Congress could follow as public distrust of AI hits record highs ahead of elections.
- The OECD found 90% of U.S. managers report their firms use at least one tool to instruct, monitor, or evaluate workers, making the U.S. the world leader in algorithmic management adoption and the highest-stakes jurisdiction for this rule.
- Meta faces a July 2026 lawsuit alleging AI-assisted systems disproportionately selected workers on medical or family leave for layoffs, illustrating exactly the bias risk the law targets.
- Walmart and Amazon workers have raised similar concerns per a May 2026 survey by United for Respect, signaling the law addresses a broad, cross-sector anxiety.
- The bill's undefined "primarily relies" standard leaves employers uncertain where the line falls, which critics warn could chill adoption of even benign HR analytics tools.
What to watch next
- Whether other large states (New York, Illinois, Washington) introduce copycat legislation, or whether Congress moves on a federal standard to preempt a patchwork of state rules.
- How courts interpret "primarily relies": the first enforcement action or legal challenge will define the practical scope of the law and either embolden or constrain regulators.
- The Meta lawsuit outcome: a ruling that AI-assisted layoff tools violated workers' rights would accelerate regulatory momentum nationally and globally.
Originally published on Present of AI, a daily source-linked AI news timeline. Read the full timeline or browse the open dataset.