The independent contractor defense is a legal argument used to shield an employer from liability for the actions of an independent contractor, asserting that the contractor operates independently and is not under the direct control of the employer. This defense connects to broader concepts of vicarious liability and respondeat superior, where employers are typically held accountable for the actions of their employees performed within the scope of their employment. By establishing that a worker is an independent contractor, employers may avoid liability for negligent acts committed by that worker while performing contracted tasks.