Most mechanics must buy their own hand tools including pliers, screwdrivers, and wrenches. Experienced mechanics often have thousands of dollars invested in tools. Employers also provide diagnostic equipment such as, voltmeters, ammeters, tachometers, engine analyzers, and dynamometers. These tools make it so that mechanics can do testing. Employers also often provide lockers and shower facilities.
Mechanics often work in awkward positions and lift heavy, greasy parts.
Common shop hazards include cuts and bruises. Some specialties require less strength than others because of hoists and other equipment used on the job. Many are members of a labor union. Unions include the International Association of Machinists and Aerospace Workers and the Amalgamated Transit Union. Two other unions include the International Union, United Automobile, Aerospace, and Agricultural Implement Workers of America and the Transport Workers Union of America.