This article argues that the disjunctive obligation in contract law can be justified on moral grounds. It argues that from a perspective that regards human beings as free agents capable of choice and therefore independent of material objects, the contracting parties must be understood as agreeing to mutually guarantee one another's ownership of a certain value. This guarantee can be fulfilled either by handing over what was promised or by making up the difference between the market value and the contract (...) value of what was promised. The plaintiff's contractual right is therefore a right that the defendant perform or pay. This makes expectation damages intelligible as a vindication of the plaintiff's contractual right. Moreover, the disjunctive obligation can be reconciled with all the doctrines that others take to be decisive arguments against it—with the doctrines of specific performance, inducing breach, impossibility, preexisting duty consideration, and nominal damages. (shrink)

This article offers an understanding of the normative basis of unjust enrichment. It begins by considering whether the right at stake in cases of unjust enrichment fits within a Kantian conception of right that treats free agency as the sole aspect of the person commanding respect. It argues that it does not because, in cases of unjust enrichment, recovery does not depend on finding a violation of the plaintiff's bare freedom to choose. The article then argues that unjust enrichment vindicates (...) the plaintiff's right of self-determination—the realization of the capacity to live from self-chosen ends—when the laws of property and contract threaten to undermine it. This resolves the puzzles of unjust enrichment law that remain mysterious on other accounts, such as how the plaintiff can have a right to recovery even though property has been effectively transferred to the defendant, why the plaintiff may recover even though the defendant has been purely passive and has committed no wrong, and why unjust enrichment fails to exhibit the structure of corrective justice. (shrink)