Cal. Lab. Code § 6308
The division, in enforcing occupational safety and health standards and orders and special orders may do any of the following:
(c) Require the performance of any other act which the protection of the life and safety of the employees in employments and places of employment reasonably demands.
An employer may request a hearing on a special order or action ordered pursuant to this section, at which the employer, owner, or any other person may appear. The appeals board shall conduct the hearing at the earliest possible time.
All orders, rules, regulations, findings, and decisions of the division made or entered under this part, except special orders and action orders, may be reviewed by the Supreme Court and the courts of appeal as may be provided by law.