In most retaliation cases, the California Public Employment Relations Board (PERB) applies the framework established in Novato Unified School District (1982) PERB Decision No. 210 (Novato USD).
Under the Novato USD framework, the charging party must first establish a prima facie case by proving four elements: (1) The employee engaged in an activity protected by a labor relations statute enforced by PERB; (2) The employer knew of the employee’s protected activity; (3) The employer took an adverse employment action against the employee; and (4) There was a causal connection, or “nexus,” between the protected activity and the adverse action—that is, the protected activity was a substantial or motivating factor in the employer’s decision. (City of San Diego (2020) PERB Decision No. 2747-M, p. 26; City and County of San Francisco (2020) PERB Decision No. 2712-M, p. 15.)
Once the charging party establishes a prima facie case, the burden shifts if the evidence also demonstrates a legitimate, non-discriminatory reason for the employer’s decision. In such circumstances, the employer may assert, as an affirmative defense, that it would have taken the same action even in the absence of the employee’s protected activity. The employer bears the burden of proving this defense by a preponderance of the evidence. (City and County of San Francisco, supra, at p. 15.)






