- Plumbing, heating, air-conditioning (34)
- Painting and paper hanging (31)
- Electrical work (41)
- Masonry and other stonework (9)
- Plastering, drywall, and insulation (5)
- Terrazzo, tile, marble and mosaic work (2)
- Carpentry work (11)
- Floor laying and floor work, nec (9)
- Roofing, siding, and sheetmetal work (14)
- Concrete work (7)
- Water well drilling (2)
- Structural steel erection (3)
- Glass and glazing work (1)
- Excavation work (5)
- Wrecking and demolition work (1)
- Special trade contractors, nec (40)
