# Construction Contracts & Liens > US construction payment and licensing law: state mechanic's and materialman's lien statutes (filing deadlines, notice requirements, priority), state contractor licensing board rules, and DOL Davis-Bacon prevailing wage determinations on federal and federally-assisted construction — grounded exclusively in state lien statute text, state licensing board regulations, and DOL.gov Davis-Bacon resources. License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Source: MIND (m-i-n-d.ai) Hub: https://www.m-i-n-d.ai/minds/construction-liens