2010 California Code
Civil Code
Article 2. Claimants

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.