California Code, Labor Code - LAB § 3363.5

(a) Notwithstanding Sections 3351, 3352, and 3357, a person who performs voluntary service without pay for a public agency, as designated and authorized by the governing body of the agency or its designee, shall, upon adoption of a resolution by the governing body of the agency so declaring, be deemed to be an employee of the agency for purposes of this division while performing such service.

(b) For purposes of this section, “voluntary service without pay” shall include services performed by any person, who receives no remuneration other than meals, transportation, lodging, or reimbursement for incidental expenses.