There are many reasons why a person might want to use protective clothing and whether it's a job in an area where exposure to different chemicals is possible or whether the temperature of the area is such that heavy clothing is required for protection, work clothes are manufactured for almost every type of work type. A company that's manufactured work clothing for over a hundred years is Carhartt who was originally founded to provide work clothing for railroad workers. The company focused on making clothing especially long-lasting for workers and eventually dived into high technology materials for flame resistant pieces.