- Plumbing, heating, air-conditioning (64)
- Painting and paper hanging (34)
- Electrical work (47)
- Masonry and other stonework (8)
- Plastering, drywall, and insulation (27)
- Terrazzo, tile, marble and mosaic work (6)
- Carpentry work (16)
- Floor laying and floor work, nec (20)
- Roofing, siding, and sheetmetal work (33)
- Concrete work (36)
- Water well drilling (9)
- Structural steel erection (6)
- Glass and glazing work (5)
- Excavation work (21)
- Wrecking and demolition work (3)
- Special trade contractors, nec (53)
