California Code, Insurance Code - INS § 10270.51

The state and any political subdivisions thereof and any municipality, may provide for the type of insurance set forth in Section 10270.5 of this code the same as any private employer and may contribute to a fund established under such section the same as any private employer.

A county may include as persons eligible under its master policy issued pursuant to Section 10270.5, employees of a district located wholly or partially within the county.  Such inclusion of district employees is subject to Section 53200.4 of the Government Code.