No time clock. Independent contractors set their own work hours. No permanent relationship. Usually independent contractors don't have a continuing relationship with a hiring company. The relationship can be frequent, but it must be at irregular intervals, on call, or whenever work is available.
Independent contractors control their own workers.
Independent contractors shouldn't hire, supervise, or pay assistants at the direction of the hiring company. If assistants are hired, it should be at the independent contractor's sole discretion. Independent contractors should have enough time available to pursue other gainful work. Independent contractors control where they work. If they work on the premises of the hiring company, it is not under that company's direction or supervision.