California Code, Public Contract Code - PCC § 10353

(a) Interfere with or create a violation of the terms of valid collective bargaining agreements.

(b) Require the contractor to hire an unqualified recipient of aid.

(c) Interfere with, or create a violation of, any federal affirmative action obligation of a contractor for hiring disabled veterans or veterans of the Vietnam era.

(d) Interfere with, or create a violation of, the requirements of Section 12990 of the Government Code.

If waivers are deemed necessary to implement this section and Article 3.9 (commencing with Section 11349) of Chapter 2 of Part 3 of Division 9 of the Welfare and Institutions Code, and if the State Department of Social Services has not obtained these waivers from the federal government by March 1, 1985, the department shall report on the barriers to the waivers and the expected date of waiver approval.

This section is not applicable to consulting services contracts.