Cal. Public Utilities Code § 28858

It is unlawful for the district to do any of the following: (a) Impose or threaten to impose reprisals on employees, to discriminate or threaten to discriminate against employees, or otherwise to interfere with, restrain, or coerce employees because of their exercise of rights guaranteed to them by this chapter. As used in this subdivision, “employee” includes an applicant for employment or reemployment with the district. (b) Deny employee organizations rights guaranteed to them by this chapter. (c) Refuse or fail to meet and negotiate in good faith with an exclusive representative. Knowingly providing an exclusive representative with inaccurate information, whether or not it is in response to a request for information, constitutes a refusal or failure of the district to meet and negotiate in good faith with the exclusive representative. (d) Dominate or interfere with the formation or administration of any employee organization, or contribute financial or other support to it, or in any way encourage employees to join any employee organization in preference to another. (e) Refuse to participate in good faith in mutually agreed upon impasse procedures.