Construction Temp Agency: Your Complete Guide to Hiring Site Labour Safely and on Schedule Construction hiring has a rhythm that office hiring does not. In week two, you need excavation crews. By week ten, you need bar benders and shuttering carpenters. By week thirty, the masons are replaced by electricians, plumbers and finishing teams, and the site needs fewer people but better ones. Hire all of them permanently and you pay for idle hands. Hire them in a rush and you get w