Cal. CIV § 9100

(a) Except as provided in subdivision (b), any of the following persons that have not been paid in full may give a stop payment notice to the public entity or assert a claim against a payment bond: (1) A person that provides work for a public works contract, if the work is authorized by a direct contractor, subcontractor, architect, project manager, or other person having charge of all or part of the public works contract. (2) A laborer. (3) A person described in Section 4107.7 of the Public Contract Code. (b) A direct contractor may not give a stop payment notice or assert a claim against a payment bond under this title.