State Plans are OSHA-approved workplace safety and health programs operated by individual states or U.S. territories. There are currently 22 State Plans covering both private sector and state and local government workers, and seven State Plans covering only state and local government workers. State Plans are monitored by OSHA and must be at least as effective as OSHA in protecting workers and in preventing work-related injuries, illnesses and deaths.

State Plans | Occupational Safety and Health Administration (osha.gov)