Mechanical maintenance technicians are responsible for maintaining, troubleshooting, and repairing machinery. This machinery can include factory machines, medical equipment, construction equipment, laboratory equipment, or machinery in other industries. This is a job for people who excel at working with their hands. Spending most of their day on their feet, mechanical maintenance technicians have to have a certain level of strength and mobility to work on commercial machinery. Manufacturing, construction, HVAC, and medical industries are the largest employers of mechanical maintenance technicians. They are either employed directly by a company, or they are employed by an agency and work on a per-project basis. They typically work 40-hour work weeks, but this is often exceeded when there is a heavy project load.