- Plumbing, heating, air-conditioning (13)
- Painting and paper hanging (12)
- Electrical work (11)
- Carpentry work (2)
- Floor laying and floor work, nec (2)
- Roofing, siding, and sheetmetal work (7)
- Concrete work (12)
- Water well drilling (1)
- Structural steel erection (1)
- Glass and glazing work (1)
- Excavation work (2)
- Special trade contractors, nec (5)
