Law 680 Unjust Enrichment Mcinnes
Law 680 Unjust Enrichment McInnes 1 Part I – Introduction A. The Nature of the Subject UNJUST ENRICHMENT IN A NUTSHELL THREE SEMINAL CASES Moses v Macferlan A third party named Jacob issued promissory notes to the plaintiff. The plaintiff in turn endorsed the notes to the defendant, but only on the latter’s undertaking to not seek recovery on the notes from the former on the basis of his endorsements. Contrary to the promise, the defendant successfully brought an action against the plaintiff for the amounts represented by the notes. The plaintiff then brought an action seeking recovery of the payments. The defendant resisted, arguing, inter alia, that liability can lie only if an express or implied promise to do so can be established. Lord Mansfield recognized that in the circumstances of the case, such a promise was implausible; a recipient of money obtained by way of adverse suit does not promise repayment. Nevertheless, he allowed recovery on the basis of a promise implied (or imposed) law: “If the defendant be under an obligation, from the ties of natural justice, to refund; the law implies a debt, and gives this action, founded in the equity of the plaintiff’s case, as it were upon a contract (‘quasi ex contractu’ as the Roman law expresses it). ... This kind of equitable action, to recover back money, which ought not in justice to be kept, is very beneficial, and therefore much encouraged. It lies only for money which, ex a quo et bono, the defendant ought to refund. ...In one word, the gist of this kind of action is, that the defendant, upon the circumstances of the case, is obliged by the ties of natural justice and equity to refund the money.” Analysis: transfer from Moses enriched Macferlan.
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