Cal. Gov. Code § 31470.5

Bookkeepers, stenographers, cooks, laborers, county fire protection district fire foremen, call firemen, and firefighters whose principal duties clearly do not fall within the scope of active fire suppression, even though the person is subject to occasional call, or is occasionally called upon, to perform duties within the scope of active fire suppression, and volunteer employees, honorary deputy county foresters, honorary deputy county firewardens, and voluntary firewardens holding appointments as such who receive no compensation therefor and who do not regularly perform official duties, are ineligible.