Cal. LAB § 1700.37

A minor cannot disaffirm a contract, otherwise valid, entered into during minority, either during the actual minority of the minor entering into such contract or at any time thereafter, with a duly licensed talent agency as defined in Section 1700.4 to secure him engagements to render artistic or creative services in motion pictures, television, the production of phonograph records, the legitimate or living stage, or otherwise in the entertainment field including, but without being limited to, services as an actor, actress, dancer, musician, comedian, singer, or other performer or entertainer, or as a writer, director, producer, production executive, choreographer, composer, conductor or designer, the blank form of which has been approved by the Labor Commissioner pursuant to Section 1700.23, where such contract has been approved by the superior court of the county where such minor resides or is employed.

Such approval may be given by the superior court on the petition of either party to the contract after such reasonable notice to the other party thereto as may be fixed by said court, with opportunity to such other party to appear and be heard.