California Code, Business and Professions Code - BPC § 7011.4

(a) Notwithstanding Section 7011, there is in the Contractors State License Board, a separate enforcement division that shall rigorously enforce this chapter prohibiting all forms of unlicensed activity and shall enforce the obligation to secure the payment of valid and current workers' compensation insurance in accordance with Section 3700.5 of the Labor Code.

(b) Persons employed as special investigators of the Contractors State License Board and designated by the Director of Consumer Affairs shall have the authority to issue a written notice to appear in court pursuant to Chapter 5C (commencing with Section 853.5) of Title 3 of Part 2 of the Penal Code.  An employee so designated is not a peace officer and does not have the power of arrest.

(c) When participating in the activities of the Joint Enforcement Strike Force on the Underground Economy pursuant to Section 329 of the Unemployment Insurance Code, the enforcement division shall have free access to all places of labor.