Cal. Lab. Code § 7858
The employer shall develop and maintain a compilation of written safety information to enable the employer and the employees operating the process to identify and understand the hazards posed by processes involving acutely hazardous and flammable material. The employer shall provide for employee participation in this process. This safety information shall be communicated to employees involved in the processes, and shall include information pertaining to hazards of acutely hazardous and flammable materials used in the process, information pertaining to the technology of the process, and information pertaining to the equipment in the process. A copy of this information and communication shall be accessible to all workers who perform any duties in or near the process area.
Ca. Lab. Code § 7858