California Code, Government Code - GOV § 22944

The board may, in its discretion and upon terms and conditions set by the board, authorize an employer to participate in the prefunding plan established by this article. The governing body of a participating employer shall enter into a contract with the board, setting forth the terms and conditions of that employer's participation in the prefunding plan, including, but not limited to, funding, expenditures, and actuarial, accounting, reporting, and investment considerations.