- Plumbing, heating, air-conditioning (32)
- Painting and paper hanging (17)
- Electrical work (15)
- Masonry and other stonework (4)
- Plastering, drywall, and insulation (7)
- Terrazzo, tile, marble and mosaic work (3)
- Carpentry work (6)
- Floor laying and floor work, nec (1)
- Roofing, siding, and sheetmetal work (13)
- Concrete work (6)
- Water well drilling (1)
- Structural steel erection (2)
- Excavation work (5)
- Special trade contractors, nec (19)
