- Plumbing, heating, air-conditioning (54)
- Painting and paper hanging (40)
- Electrical work (41)
- Masonry and other stonework (7)
- Plastering, drywall, and insulation (44)
- Terrazzo, tile, marble and mosaic work (11)
- Carpentry work (32)
- Floor laying and floor work, nec (11)
- Roofing, siding, and sheetmetal work (33)
- Concrete work (31)
- Water well drilling (7)
- Structural steel erection (3)
- Glass and glazing work (1)
- Excavation work (26)
- Wrecking and demolition work (1)
- Special trade contractors, nec (35)
