Also, they may be exposed to toxic chemicals. They may be injured because of moving mechanical parts of tools, machinery, or equipment. Mechanics often work with dirty and greasy parts, and in awkward positions. Most mechanics work 40 hours a week. Self-employed mechanics often work longer.
Some mechanics work on weekends.
Beginning mechanics are expected to collect tools as they gain experience. They must buy their own hand tools, such as screwdrivers, wrenches, and pliers. Many experienced mechanics have thousands of dollars invested in tools. Auto mechanics also use power tools such as pneumatic wrenches to remove bolts quickly. They may use machine tools such as grinding machines and lathes to rebuild brakes.