Cal. PCC § 20919.23

(a) The school district may utilize job order contracting pursuant to this article only if the school district has entered into a project labor agreement or agreements that will apply to all public works awarded through job order contracting and to all other public works of the school district that exceed a monetary threshold set by the school district until January 1, 2027, regardless of what contracting procedure is used to award that work.

(b) The school district shall prepare an execution plan for all modernization projects that may be eligible for job order contracting pursuant to this article. The school district shall select from that plan a sufficient number of projects to be initiated as job order contracts during each calendar year and shall determine for each selected project that job order contracting will reduce the total cost of that project. Job order contracting shall not be used if the school district finds that it will increase the total cost of the project.

(c) (1) An entity awarded a job order contract in excess of twenty-five thousand dollars ($25,000) shall provide an enforceable commitment to the school district that the entity and its subcontractors at every tier will use a skilled and trained workforce to perform all work on the job order contract that falls within an apprenticeable occupation in the building and construction trades, in accordance with Chapter 2.9 (commencing with Section 2600) of Part 1.

(2) Paragraph (1) shall not apply if the job order contract is subject to a project labor agreement that will bind all contractors and subcontractors performing work on the job order contract to use a skilled and trained workforce to perform the job order contract.