US lawCaliforniaConstitutionArticle I6Cal. Const. art. I, § 6California Constitution Article I, Section 6Last amended: 1974Length: 23 wordsOfficial source Slavery is prohibited. Involuntary servitude is prohibited except to punish crime. (Sec. 6 added Nov. 5, 1974, by Prop. 7. Res.Ch. 90, 1974.)PreviousCal. Const. art. I, § 5NextCal. Const. art. I, § 7