Legal Definition of Contractor: Someone who is engaged to do a job or perform an act but who maintains control over how the job or act is to be carried out. In medical jurisprudence, a surgeon who agrees to perform a certain operation is an independent contractor | Looking to understand the legal definition of a contractor? Discover why it’s crucial for business owners and contractors alike. Learn about the different types of contractors and the benefits they bring, including flexibility, expertise, and cost savings. Avoid legal issues by correctly classifying workers. Find out more here