What is Contractor?

Legal Definition
A person or business that agrees to conduct work for another entity as specified under the terms of a contract. Unlike employees, contractors are independent entities that do not work exclusively for one person or business and are subject to different employment law and tax treatment than employees.
See also
Legal Definition
One who enters into a contract this term is usually applied to persons who undertake to do public work, or the work for a company or corporation on a large scale, at a certain fixed price, or to furnish goods to another at a fixed or ascertained price. 2 Pardess. n. 300. Vide 5 Whart. 366.
-- Bouviers Law Dictionary
Legal Definition
This term is strictly applicable to any person who enters into a contract, (Kent v. Railroad Co., 12 N. Y. 628,) but is commonly reserved to designate one who, for a fixed price, undertakes to procure the performance of works on a large scale, or the furnishing of goods in large quantities, whether for the public or a company or individual, (McCarthy v. Second Parish, 71 Me. 318, 36 Am. Rep 320; Brown V. Trust Co.., 174 Pa. 443, 34 Atl. 335.)
-- Black's Law Dictionary
Legal Definition
A party to a contract.
-- Ballentine's Law Dictionary