Contractors are specialists who provide companies with certain skills or services for a fixed period. They may be hired for a specific amount of hours, a specific time frame, or the entire project duration. Contractors can choose to be self-employed and work as sole traders or set up their own limited business. Independent contractors are self-employed individuals who find their own clientele. Contractors can, however, be hired through an umbrella firm or agency. Those who work for a corporation may not need to acquire their own clients because the company can provide them. The contractor will be paid, as well as their taxes, by the corporation.