PREEXISTING-DUTY RULE

preexisting duty rule

preexisting-duty rule. Contracts. The rule that if a party does or promises to do what the party is already legally obligated to do — or refrains or promises to refrain from doing what the party is already legally obligated to refrain from doing — the party has not incurred detriment. • This rule’s result is […]

preexisting duty rule Read More »

preexisting-duty rule

glossary / PREEXISTING-DUTY RULE, 既有义务规则

preexisting-duty rule 既有义务规则合同法上的一项规则，指如果一方当事人履行或允诺履行其本应履行的义务，该当事人并未因此而遭受损害。其中本应履行的义务，既可以是作为的义务，也可以是不作为的义务。既有义务规则的运用，意味着履行既有义务的允诺并不构成合同的有效对价。

preexisting-duty rule Read More »