Cal. Civ. Code § 3065c
Whenever any faller, bucker, or millhand has a lien pursuant to Section 3065 and has not been paid for his labor by the contractor employing him, and money is owing to such contractor by a mill operator, any such faller, bucker, or millhand, or several of them acting jointly, may file with the Labor Commissioner an affidavit stating the amount of wages unpaid to him or them and describing the labor for which wages are owed and the period in which such labor was performed. If the Labor Commissioner finds the affidavit in order, he shall send to such mill operator a stop notice directing such mill operator to withhold funds in the amount of the unpaid wages from the contractor. The mill operator shall withhold such funds pursuant to the stop notice for 15 days from the date of service of the notice, subject to garnishment within that period by the faller, bucker, or millhand or any assignee thereof.
Ca. Civ. Code § 3065c