The Thirteenth Amendment to the United States Constitution officially outlaws slavery and involuntary servitude, except as punishment for a crime.
Involuntary servitude is a United States legal and constitutional term for a person laboring against that person's will to benefit another, under some form of coercion other than the worker's financial needs. While laboring to benefit another occurs also in the condition of slavery, involuntary servitude does not necessarily connote the complete lack of freedom experienced in chattel slavery; involuntary servitude may also refer to other forms of unfree labor. Involuntary servitude is not dependent upon compensation or its amount.
The Thirteenth Amendment to the United States Constitution makes involuntary servitude illegal under any U.S. jurisdiction whether at the hands of the U.S. government or in the private sphere, except as punishment for a crime: "Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction."