California Code, Labor Code - LAB § 2750.5

(a) That the individual has the right to control and discretion as to the manner of performance of the contract for services in that the result of the work and not the means by which it is accomplished is the primary factor bargained for.

(b) That the individual is customarily engaged in an independently established business.

(c) That the individual's independent contractor status is bona fide and not a subterfuge to avoid employee status. A bona fide independent contractor status is further evidenced by the presence of cumulative factors such as substantial investment other than personal services in the business, holding out to be in business for oneself, bargaining for a contract to complete a specific project for compensation by project rather than by time, control over the time and place the work is performed, supplying the tools or instrumentalities used in the work other than tools and instrumentalities normally and customarily provided by employees, hiring employees, performing work that is not ordinarily in the course of the principal's work, performing work that requires a particular skill, holding a license pursuant to the Business and Professions Code, the intent by the parties that the work relationship is of an independent contractor status, or that the relationship is not severable or terminable at will by the principal but gives rise to an action for breach of contract.

In addition to the factors contained in subdivisions (a), (b), and (c), any person performing any function or activity for which a license is required pursuant to Chapter 9 (commencing with Section 7000) of Division 3 of the Business and Professions Code shall hold a valid contractors' license as a condition of having independent contractor status.

For purposes of workers' compensation law, this presumption is a supplement to the existing statutory definitions of employee and independent contractor, and is not intended to lessen the coverage ofemployees under Division 4 and Division 5.