California Code, Business and Professions Code - BPC § 7011.8

(a) Any person subject to licensure under this chapter who reports to, or causes a complaint to be filed with, the Contractors State License Board that a person licensed by that entity has engaged in professional misconduct, knowing the report or complaint to be false, may be issued a citation by the registrar.

(b) The board may notify the appropriate district attorney or city attorney that a person subject to licensure under this chapter has made or filed what the entity believes to be a false report or complaint against a licensee.