California Code, Public Utilities Code - PUC § 105140

Except as otherwise provided in this article and in Article 2 (commencing with Section 105150), the determination of questions concerning employee representation and the conduct of employee-employer relations within the district shall be governed by the Meyers-Milias-Brown Act (Chapter 10 (commencing with Section 3500) of Division 4 of Title 1 of the Government Code).