California Code, Civil Code - CIV § 1812.509

(a) No employment agency shall, when employment would be in violation of Chapter 1 (commencing with Section 1171) of Part 4 of Division 2 of the Labor Code or Part 27 (commencing with Section 48000) of the Education Code, accept any application for employment made by, or on behalf of, any minor, or place or assist in placing any minor in that employment.

(b) Every employment agency shall notify each jobseeker before sending the jobseeker in response to a request for employment whether a labor contract is in existence at the establishment to which the jobseeker is being sent, and whether union membership is required.

(c) No employment agency shall send a jobseeker to any place where a strike, lockout, or other labor trouble exists without notifying the jobseeker of that fact and shall in addition thereto enter a statement of those conditions upon the contract or receipt given to the jobseeker.

(d) No babysitting, domestic, or other employment agency which procures babysitting or domestic employment for employers shall refer babysitters or domestics for any employment without first conducting a personal interview of the jobseeker and making a reasonable effort to verify the experience or training of the jobseeker.

(e) No employment agency that procures temporary employment for long-term health care employers shall refer certified nurse assistants or licensed nursing staff as defined in Section 1812.540, for any employment without first conducting a personal interview of the individual, verifying the experience, training, and references of the individual, and verifying that the individual is in good standing with the appropriate licensing or certification board, including verification that the individual has successfully secured a criminal record clearance.