CIMA BA4 Syllabus C. CONTRACT AND EMPLOYMENT LAW - Explain Adequacy And Sufficiency Of Consideration - Notes 7 / 13
Consideration must be Sufficient not Adequate
This means it needs to be something of value to the other person but how much it is - is not the business of the court
Thomas v Thomas
Hence the saying 'Caveat Emptor' - Buyer beware!
Consideration must also be a legal and possible performance
Specific Circumstances
Promise to Pay Extra (for doing existing work)
This extra payment can't be sued for if not paid as the work you did was not sufficient - it was just existing work
Stilk v Myrick
Contrast this with doing extra work for extra pay - then you can sue for the payment if not paid as your consideration is sufficient - you did more work
Hartley v Ponsonby
One slight exception is you can do your existing work and still sue for extra agreed money if the deal was mutually beneficial
Williams v Roffey Bros
Promise to Accept Less
This is you saying pay me half and I'll forget the rest - and then after receiving half - you asking for the other half. You can actually do this! Because your debtor has not offered any consideration for the reduction by half so the agreement wasn't legal
So how can the debtor add in some consideration and thus be able to rely on this agreement?
1) Pay the half Earlier
2) Pay the half differently (in-kind)
3. Pay the half at a different location
4. Get a 3rd party to pay the halfAlso there is the Equitable Doctrine of Promissory Estoppel which says you can rely on the agreement if you relied on the agreement and the creditor knew you were relying on the agreement (to only pay half)
Part payment of a debt from a third party
If a debtor accepts less consideration as full consideration from a third party, he cannot demand more after he has accepted less because part payment by a third party is good consideration for a promise to discharge a debt.