An existing legal obligation resting upon the promisor, or a moral obligation originating in some benefit conferred upon the promisor or prejudice suffered by the promisee, also is a good consideration for a promise to an extent corresponding with the extent of the obligation, but no further or otherwise.
N.D. Cent. Code § 9-05-02
When legal or moral obligation good consideration
Official source: North Dakota Legislative Branch. Reproduced from public-domain North Dakota statutes; confirm against the official source for the current text. Not legal advice.