The duties of a public works laborer include various manual labor tasks in a city. In this career, you operate power tools and equipment like air compressors, chainsaws, and lawn mowers, as well as heavy machinery like backhoes and cranes. Common jobs you may work as a public works laborer include maintaining or building roads, parks, sewage systems, and more. Most positions require the use of company vehicles. Depending on your specialization or department, your duties may revolve around cleaning, repairing, or installing public structures.