Are all temporary workers recruited by the project department?

Not all the people recruited by the engineering project department are temporary workers. Most of the people who work in the project department are technical professionals, with a clear division of labor. They only do plastering and masonry, and the formwork shelf is just a dry formwork shelf. The workers or teams working here don't have much demand for finding jobs, but the project department sometimes lacks people, works temporarily, is busy with farming and works discontinuously, and needs to transfer some teams, such as commandos, hourly workers and temporary workers.