California Code, Civil Code - CIV § 8840

On resolution of the claim in the stop work notice or the direct contractor's cancellation of the stop work notice, the contractor shall post, and give subcontractors with whom the contractor has a direct contractual relationship on the work of improvement, notice of the resolution or cancellation. The notice shall comply with the requirements of Chapter 2 (commencing with Section 8100) of Title 1. In addition to posting the notice pursuant to Section 8114, the notice shall also be posted at the main office of the site, if one exists.