The job duties of a general laborer vary. They may include cleaning and preparing a job site, loading and delivering materials, and using a variety of tools and machines; such as levels, lifts, power drills, grinders, saws and pressure washers. Laborers may be required to set up and take down ladders, scaffolding, and other temporary structures. They help carpenters, masons, and other specialized contractors. At road construction sites, general laborers may be required to assist with the maintenance of traffic including flagging and roadway closer setup.