Cal. PUC § 40120

Whenever a majority of the employees employed by the district in a unit appropriate for collective bargaining indicate a desire to be represented by a labor organization, the district, upon determining as provided in Section 40122 that the labor organization represents the employees in the appropriate unit, shall enter into a written contract with the accredited representative of those employees governing wages, salaries, hours, and working conditions. In case of a dispute over wages, salaries, hours, or working conditions, which is not resolved by negotiations in good faith between the district and the labor organization, upon the request of both, the district and the labor organization may submit the dispute to the decision of the majority of an arbitration board, and the decision of the majority of the arbitration board shall be final. The arbitration board shall be composed of two representatives of the district, and two representatives of the labor organization, and they shall endeavor to agree upon the selection of the fifth member. If they are unable to agree, the names of five persons experienced in labor arbitration shall be obtained from the California State Mediation and Conciliation Service. The labor organization and the district shall, alternately, strike a name from the list so supplied, and the name remaining after the labor organization and the district have stricken four names, shall be designated as the arbitrator. The labor organization and the district shall determine by lot who shall first strike from the list. The decision of a majority of the arbitration board shall be final and binding upon the parties thereto. The expenses of arbitration shall be borne equally by the parties. Each party shall bear his or her own costs.