- Plumbing, heating, air-conditioning (18)
- Painting and paper hanging (14)
- Electrical work (11)
- Masonry and other stonework (6)
- Plastering, drywall, and insulation (1)
- Terrazzo, tile, marble and mosaic work (2)
- Carpentry work (5)
- Floor laying and floor work, nec (1)
- Roofing, siding, and sheetmetal work (11)
- Concrete work (5)
- Excavation work (5)
- Special trade contractors, nec (11)
