Machinists work around high-speed machinery. They must stand much of the workday. Their work areas are generally well lit and ventilated but noisy. Machinists are exposed to machine oil, metal filings, and unpleasant odors. To prevent accidents or injury, machinists are required to wear protective gear, such as safety glasses and earplugs, and follow safety regulations. Working conditions are normal for a manufacturing environment. Loose fitting clothes and jewelry are not permitted. Work areas must be well kept and clean.