Cal. Code Regs. tit. 8 § 372
After initiation of a proceeding, a party, upon written request made to another party, is entitled to obtain prior to the hearing the names and addresses of witnesses to the extent known to the other party, including, but not limited to, those intended to be called to testify at the hearing. Nothing in this section requires the disclosure of the identity of a person who submitted a complaint regarding the unsafeness of an employment or place of employment unless that person requests otherwise. A request under this section for a list of witnesses to be called may be satisfied only by the service of a list of witnesses.
Cal. Code Regs. Tit. 8, § 372
Note: Authority cited: Sections 148.7, 149.5 and 6603(a), Labor Code. Reference: Section 11507.6, Government Code; and Sections 148.7, 149.5, 6309 and 6603(a), Labor Code.