- Plumbing, heating, air-conditioning (38)
- Painting and paper hanging (23)
- Electrical work (22)
- Masonry and other stonework (8)
- Plastering, drywall, and insulation (3)
- Carpentry work (14)
- Floor laying and floor work, nec (7)
- Roofing, siding, and sheetmetal work (22)
- Concrete work (13)
- Structural steel erection (2)
- Glass and glazing work (1)
- Excavation work (3)
- Special trade contractors, nec (23)
