Cal. Lab. Code § 3361.5

Notwithstanding Section 3351, a volunteer, unsalaried person authorized by the governing board of a recreation and park district to perform volunteer services for the district shall, upon the adoption of a resolution of the governing board of the district so declaring, be deemed an employee of the district for the purposes of this division and shall be entitled to the workers’ compensation benefits provided by this division for any injury sustained by him or her while engaged in the performance of any service under the direction and control of the governing board of the recreation and park district.