California Code, Unemployment Insurance Code - UIC § 633

(a) For purposes of coverage under Part 2 (commencing with Section 2601) of Division 1, “employment” does not include services performed as an intermittent or adjunct instructor at a postsecondary educational institution which meets the requirements of Article 8 (commencing with Section 94900) of Chapter 7 of Part 59 of the Education Code if the intermittent or adjunct instructor and the employing unit enter a written contract with the following provisions:

(b) This section shall not apply to services performed under a collective bargaining agreement.

(c) This section shall become operative on January 1, 1997.