California Code, Unemployment Insurance Code - UIC § 2707.5

(a) The department may for good cause reconsider any determination provided for in this part prior to the filing of an appeal therefrom, or within 30 days after an appeal to an administrative law judge is filed. The department shall promptly notify the claimant of any reconsidered determination, and the claimant may appeal therefrom in the manner prescribed in Section 2707.2. The director shall be an interested party to any appeal.

(b) The department may for good cause reconsider any computation or recomputation provided for in this part within one year from the beginning date of the disability benefit period to which the notice of computation or recomputation relates, except that no recomputation may be considered with respect to any issue considered or under consideration in an appeal taken from a denial of recomputation. The department shall promptly notify the claimant of the recomputation. The claimant may protest the accuracy of the recomputation as prescribed in Section 2707.4.