Acceptance of an agreement not to sue, supported by consideration, terminates one's right to continue any lawsuit, at present or in the future, on the grounds described in the agreement. A promise not to sue is commonly called a release.
When charitable pledges are made to fund a specific project, the pledgee's sacrifice is carrying out that project. In this sense, pledges are considered unilateral agreements, enforceable only when accepted by commencement of the proposed project.
Problems may arise when the consideration involved in a contract is money and the parties disagree as to the amount of money that the debtor owes the creditor.
A disputed amount, or unliquidated amount, is one on which the parties never agreed. Final settlement of disputed claims may lead to misunderstanding, dispute, and lengthy negotiation. If a creditor accepts as full payment an amount that is less than the amount due, then the dispute has been settled by an accord and satisfaction. Accord is the implied or expressed acceptance of less than what has been billed the debtor. Satisfaction is the agreed-to settlement as contained in the accord. Only if the dispute is honest, made in good faith, and not superficial or trivial will the courts entertain arguments based on accord and satisfaction.
An undisputed amount, or liquidated amount, is one on which the parties have mutually agreed. Although a party may have second thoughts about the amount promised for goods or services rendered, the amount that was agreed to by the parties when they made their contract remains an undisputed amount. A partial payment in lieu of full payment when accepted by a creditor will not cancel an undisputed debt.
As a general rule, a contract is not enforceable if it lacks consideration.
Some jurisdictions have eliminated the element of consideration in a few specifically named contracts. Typical agreements falling into this category include promises bearing a seal, promises after discharge in bankruptcy, debts barred by the statute of limitations, promises enforced by promissory estoppel, and options governed by national law.
Persons discharged from indebtedness through bankruptcy may reaffirm and resume their obligations, as prompted, perhaps, by moral compulsion. The bankruptcy court must hold a hearing when a reaffirmation is intended, informing the debtor that reaffirmation is optional, not required, and informing the debtor of the legal consequences of reactivating a debt.
