unjust benefit

The commission said the low bids, made on contracts to design computer software for several city governments, were judged likely to be "unjust low-price sales" and "customer inducement by unjust benefits" under the Japanese monopoly law.

It is clear that any civilised system of law is bound to provide remedies for cases of what has been called unjust enrichment or unjust benefit, that is to prevent a man from retaining the money of or some benefit derived from another which it is against conscience that he should keep.