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US State·Passed·Effective January 1, 2027

California SB 951 (AI Layoff Notices under Cal/WARN)

Dates and status re-checked against primary sources on October 16, 2026. How we verify

SB 951 (Chapter 860), signed on September 30, 2026, adds AI to California's WARN Act. When a mass layoff, relocation or termination is caused in whole or in substantial part by an AI system or other automated technology that replaces or automates jobs, the employer's 60-day notice must say so and give details. The bill has no operative date of its own, so it takes effect January 1, 2027 under the state constitution's default rule.

What this means for your team

Cal/WARN only covers establishments with 75 or more employees in the past 12 months, so most small teams are outside it. If you are covered and automation is a substantial cause of planned cuts, add the technology displacement details to the notice you already owe. SB 947, signed the same day, is the one that reaches small employers: from July 1, 2027 it bars relying solely on an automated decision system to discipline or fire workers, with no size threshold.

Key requirements

  • Applies to Cal/WARN notices: covered establishments with 75 or more employees, mass layoffs of 50 or more employees within 30 days, relocations and terminations
  • Put the statement "This notice is for a technology displacement" at the top of the notice
  • State the number, classification or occupation, and work location of the layoffs substantially due to AI or other automated technology
  • List the job functions that AI or automation will take over and the category or type of system that caused the displacement
  • The Employment Development Department publishes a summary of these notices and a quarterly statewide summary of technology displacements
Penalties

Existing Cal/WARN remedies apply, including a civil penalty of up to $500 for each day of the violation.

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