California Code, Unemployment Insurance Code - UIC § 1237

(a) No business entity shall discharge or otherwise discriminate against any person because he or she has sought information from the department concerning his or her rights under this code or the Labor Code, cooperated with any investigation undertaken by the department, or has testified or is about to testify in any proceeding brought pursuant to this code or the Labor Code.

(b) Any employee who believes that his or her rights under subdivision (a) have been violated may file a complaint with the Labor Commissioner, and with respect to that complaint shall be entitled to the same rights, remedies, and procedures as are applicable for a violation of Section 98.6 of the Labor Code.