Data Provenance
Primary Data Sources & Jurisdictions
The pages below are the source families used for this release. Each record should carry its own source link and check date; coverage is not complete for every state/trade combination.
Federal Labor & Environmental Agencies
- Bureau of Labor Statistics (BLS): OEWS wage tables and Occupational Outlook Handbook pages.
- U.S. Department of Labor (USDOL): Employment and Training Administration Registered Apprenticeship search.
- U.S. Environmental Protection Agency (EPA): Clean Air Act Section 608 certification information.
- OSHA: 29 CFR 1926 construction safety standards.
Priority State Regulatory Boards
- Texas: Texas Department of Licensing and Regulation and Texas State Board of Plumbing Examiners.
- Florida: Department of Business and Professional Regulation Construction Industry Licensing Board.
- Virginia: Department of Professional and Occupational Regulation Board for Contractors.
- California: Contractors State License Board and Division of Apprenticeship Standards.
- North Carolina: State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors and State Board of Examiners of Electrical Contractors.