In Bogacki v. Board of Supervisors (1971) 5 Cal.3d 771, the court stated: "A public employee serving at the pleasure of the appointing authority . . . is by the terms of his employment subject to removal without judicially cognizable good cause . . . . Only when such a public employee can show that his employment has been unjustifiably conditioned on the waiver of his constitutional rights will the courts intervene and give relief. "