The condition of being coerced to labor against one’s will. While slavery is a form of involuntary servitude, involuntary servitude has a broader meaning, including the vestiges of slavery, peonage or a coolie labor system, or work forced by the use or threat of physical restraint or injury or through law. The 13th Amendment outlawed involuntary servitude in 1865. -The United States Constitution, What It Says, What It Means, A Hip Pocket Guide