Cal. Bus. & Prof. Code § 16600 : CALIFORNIA BUSINESS AND PROFESSIONS CODE — GENERAL BUSINESS REGULATIONS — PRESERVATION AND REGULATION OF COMPETITION — CONTRACTS IN RESTRAINT OF TRADE — Void contracts TEXT PDF 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'l. Code § 16600 Added by Stats. 1941, Ch. 526.