The Board of Trustees administers the Retirement Plan and governs the investment of the Plan's assets. The Board is composed of seven members: Three Trustees who are elected by the Active members; three Trustees appointed by the Board of Supervisors; and the Ex-Officio Trustee who is the County Treasurer – Tax Collector.

The Board of Trustees is responsible for the overall operation of the Trust. The Board directs the activities of the Pension Trust staff, establishes the Trust Investment Policy and sets all other policies related to the operation and funding of the Trust. The Trustees do not determine what benefits are contained in the Retirement Plan.

The Board of Trustees meets 8 times per year on the fourth Monday of the month at 9:30 am in the Board of Supervisors Chambers, located at 1055 Monterey Street.