Cal. Pub. Contract Code § 2503
If a charter provision, initiative, or ordinance of a charter city prohibits, limits, or constrains in any way the governing board's authority or discretion to adopt, require, or utilize a project labor agreement that includes all the taxpayer protection provisions of Section 2500 for some or all of the construction projects to be awarded by the city, then state funding or financial assistance shall not be used to support any construction projects awarded by the city. This section shall not be applicable until January 1, 2015, for charter cities in which a charter provision, initiative, or ordinance in effect prior to November 1, 2011, would disqualify a construction project from receiving state funding or financial assistance.
Ca. Pub. Cont. Code § 2503