On September 30, 2023, Governor Gavin Newsom signed SB 553 into law, establishing a new written Workplace Violence Prevention Plan (“WVPP”) requirement for nearly all California employers. The WVPP requirement, which becomes effective on July 1, 2024, is the first of its kind in the nation to apply to employers across industries. In connection with maintaining and implementing the WVPP, employers also must train employees on workplace violence hazards, maintain a violent incident log and other workplace violence-related records, and conduct periodic reviews of the WVPP. The law’s extensive requirements, which are detailed comprehensively below, will be enforced by California’s Division of Occupational Safety and Health (“Cal/OSHA”).