Cal. LAB § 98.1

(a) Within 15 days after the hearing is concluded, the Labor Commissioner shall file in the office of the division a copy of the order, decision, or award. The order, decision, or award shall include a summary of the hearing and the reasons for the decision. Upon filing of the order, decision, or award, the Labor Commissioner shall serve a copy of the decision personally, by first-class mail, or in the manner specified in Section 415.20 of the Code of Civil Procedure on the parties. The notice shall also advise the parties of their right to appeal the decision or award and further advise the parties that failure to do so within the period prescribed by this chapter shall result in the decision or award becoming final and enforceable as a judgment by the superior court.

(b) For the purpose of this section, an award shall include any sums found owing, damages proved, and any penalties awarded pursuant to this code.

(c) All awards granted pursuant to a hearing under this chapter shall accrue interest on all due and unpaid wages at the same rate as prescribed by subdivision (b) of Section 3289 of the Civil Code. The interest shall accrue until the wages are paid from the date that the wages were due and payable as provided in Part 1 (commencing with Section 200) of Division 2.