Cal. Business and Professions Code § 16600 : California Business And Professions Code — General Business Regulations — Contracts In Restraint Of Trade — Void contracts Date: 15 Sep 2016 TEXT PDF Current through the 2016 Legislative Session Except as provided in this chapter, every contract by which anyone is restrained from engaging in a lawful profession, trade, or business of any kind is to that extent void. Ca. Bus. and Prof. Code § 16600