Cal. UIC § 1141

When an assessment for worker contributions that is made pursuant to the provisions of this article becomes final against a farm labor contractor, as defined in Section 1682 of the Labor Code, which is an employing unit, as defined in Section 135 of this code, or such farm labor contractor is otherwise delinquent in the payment of worker contributions, the department shall notify the Labor Commissioner, in writing, of the amount of the delinquency of such employing unit, and shall further notify the Labor Commissioner, in writing, when such delinquency is paid. The notice of assessment and the amount of any delinquency shall be admissible in evidence in any action or special proceeding arising out of the provisions of Chapter 3 (commencing with Section 1682) of Part 6 of Division 2 of the Labor Code.