Chefs bring their own knives. Many skilled laborers in construction bring their own hand tools, especially at the high end (cabinetmakers, finish plasterers, e

Chefs bring their own knives. Many skilled laborers in construction bring their own hand tools, especially at the high end (cabinetmakers, finish plasterers, etc). In many industries workers must pay for their uniforms and safety equipment (the uniform part seems particularly egregious to me -- it is company specific yet you have to pay for it and look after it). Lawyers and salespeople have to pay for their fancy suits.