La. Civ. Code art. 1968 : Civil Code — OF THE DIFFERENT MODES OF ACQUIRING THE OWNERSHIP OF THINGS — CONVENTIONAL OBLIGATIONS OR CONTRACTS — CAUSE — Unlawful cause TEXT PDF The cause of an obligation is unlawful when the enforcement of the obligation would produce a result prohibited by law or against public policy. Examples of obligations with unlawful causes include those that arise from gaming, gambling, and wagering not authorized by law. La. C.C. § 1968 Amended by Acts 2019, No. 106,s. 1, eff. 8/1/2019. Acts 1984, No. 331, §1, eff. 1/1/1985.