California Code, Business and Professions Code - BPC § 5053

Nothing contained in this chapter precludes a person who is not a certified public accountant or public accountant from serving as an employee of, or an assistant to, a certified public accountant or public accountant or partnership or a corporation composed of certified public accountants or public accountants holding a permit to practice pursuant to this chapter if the employee or assistant works under the control and supervision of a certified public accountant, or a public accountant authorized to practice public accountancy pursuant to this chapter and if the employee or assistant does not issue any statement over their name.

This section does not apply to an attorney at law in connection with the practice of law.