Cal. Ins. Code § 11691.3
The commissioner shall establish a list of all insurers or reinsurers authorized to reinsure the injury, disablement, or death portions of policies of workers' compensation insurance under the class of disability insurance. An insurer or reinsurer shall be authorized to reinsure the injury, disablement, or death portions of policies of workers' compensation insurance under the class of disability insurance if it has complied with Section 11691. The commissioner shall publish a master list of those insurers or reinsurers at least semiannually. Any insurer or reinsurer providing the notification and deposit required by Section 11691, shall be added by addendum to the list at the time of approval, and shall be incorporated into the master list at the next date of publication. The list and addenda required by this section shall be published so that they are readily accessible to insurers and producers. The list and addenda required by this section shall also contain a notice that if an insurer enters into a contract of reinsurance with an insurer or reinsurer reinsuring the injury, disablement, or death portions of policies of workers' compensation insurance under the class of disability insurance that is not authorized pursuant to this section, the ceding insurer may not be able to claim that reinsurance for reserve credit.
Ca. Ins. Code § 11691.3