Cal. Food & Agric. Code § 3102

If the Department of Parks and Recreation or the board of directors of any district agricultural association finds that, in order to conduct a successful horserace meeting with adequate competition and a sufficient number of competent jockeys and exercise boys, it is necessary that it purchase suitable accident and disability insurance for the benefit of the jockeys and exercise boys who are participating in the horserace meeting, it may purchase such insurance to protect them from the physical hazards of such participation.