New Single-Family Housing Construction (except Operative Builders), Residential Remodelers, Industrial Building Construction, Oil and Gas Pipeline and Related Structures Construction, Poured Concrete Foundation and Structure Contractors

Site Preparation Contractors

All Other Specialty Trade Contractors

HVAC

Drywall and Insulation Contractors

Masonry Contractors

New Housing Operative Builders, Residential Remodelers, Commercial and Institutional Building Construction, Highway, Street, and Bridge Construction, Other Heavy and Civil Engineering Construction

Other Building Finishing Contractors, Die-Cut Paper and Paperboard Office Supplies Manufacturing, Wood Office Furniture Manufacturing, Office Furniture (except Wood) Manufacturing, Stationery and Office Supplies Merchant Wholesalers

Other Electric Power Generation, Electrical Contractors

Plumbing, Heating, and Air-Conditioning Contractors

Drywall and Insulation Contractors, Wood Preservation, Engineered Wood Member (except Truss) Manufacturing, Cut Stock, Resawing Lumber, and Planing, Paper (except Newsprint) Mills

Nursery and Tree Production, Forest Nurseries and Gathering of Forest Products, New Single-Family Housing Construction (except Operative Builders), New Multifamily Housing Construction (except Operative Builders), New Housing Operative Builders

All Other Specialty Trade Contractors

All Other Specialty Trade Contractors

Plumbing, Heating, and Air-Conditioning Contractors

All Other Specialty Trade Contractors

Plumbing, Heating, and Air-Conditioning Contractors

All Other Specialty Trade Contractors

New Single-Family Housing Construction (except Operative Builders), New Multifamily Housing Construction (except Operative Builders), Poured Concrete Foundation and Structure Contractors, Plumbing, Heating, and Air-Conditioning Contractors

Electrical Contractors

All Other Specialty Trade Contractors

New Single-Family Housing Construction (except Operative Builders), New Multifamily Housing Construction (except Operative Builders), New Housing Operative Builders, Residential Remodelers, Industrial Building Construction

New Single-Family Housing Construction (except Operative Builders), Residential Remodelers, Industrial Building Construction, Commercial and Institutional Building Construction, Water and Sewer Line and Related Structures Construction

Plumbing, Heating, and Air-Conditioning Contractors