California Code, Business and Professions Code - BPC § 18101

(a) “Freelance worker” means a person or organization composed of no more than one person, whether or not incorporated or employing a trade name, that is hired or retained as a bona fide independent contractor by a hiring party to provide professional services in exchange for an amount equal to or greater than two hundred and fifty dollars ($250), either by itself or when aggregated with all contracts for services between the same hiring party and independent contractor during the immediately preceding 120 days.

(b) “Hiring party” means a person or organization in the State of California that retains a freelance worker to provide professional services, except any of the following:

(c) “Professional services” has the same meaning as paragraph (2) of subdivision (b) of Section 2778 of the Labor Code.

(d) “Public prosecutor” has the same meaning as Section 180 of the Labor Code.