What is the term for when a party to a contract must perform his duties exactly and perfectly according to the terms of the contract?

A contract can be discharged by complete performance or material nonperformance of the contractual duty. Note, in passing, that the modern trend at common law (and explicit under the Uniform Commercial Code [UCC], Section 1-203) is that the parties have a good-faith dutyThe duty to act with honesty in fact in commercial transactions. to perform to each other. There is in every contract “an implied covenant of good faith” (honesty in fact in the transaction) that the parties will deal fairly, keep their promises, and not frustrate the other party’s reasonable expectations of what was given and what received.

Full performance of the contractual obligation discharges the duty. If Ralph does a fine job of plumbing Betty’s new bathroom, she pays him. Both are discharged.

If Ralph doesn’t do any work at all on Betty’s bathroom, or almost none, then Betty owes him nothing. She—the nonbreaching party—is discharged, and Ralph is liable for breach of contract.

Under UCC Section 2-106(4), a party that ends a contract breached by the other party is said to have effected a cancellationThe termination of a contract by one party in response to its material breach by the other.. The cancelling party retains the right to seek a remedy for breach of the whole contract or any unperformed obligation. The UCC distinguishes cancellation from terminationThe lawful right to end the contract other than for breach., which occurs when either party exercises a lawful right to end the contract other than for breach. When a contract is terminated, all executory duties are discharged on both sides, but if there has been a partial breach, the right to seek a remedy survives.

Logically, anything less than full performance, even a slight deviation from what is owed, is sufficient to prevent the duty from being discharged and can amount to a breach of contract. So if Ralph does all the plumbing for Betty’s new bathroom except hook up the toilet feed, he has not really “plumbed the new bathroom.” He has only plumbed part of it. At classic common law, that was it: either you did the thing you promised completely or you had materially breached. But under modern theories, an ameliorative doctrine has developed, called substantial performanceAt common law, the idea that a promisee should not be denied all payment under a contract when his or her performance was imperfect if significant benefit has been conferred on the promisor, who must pay for the value received.: if one side has substantially, but not completely, performed, so that the other side has received a benefit, the nonbreaching party owes something for the value received. The Restatement (Second) of Contracts puts it this way:

In an important category of disputes over failure of performance, one party asserts the right to payment on the ground that he has completed his performance, while the other party refuses to pay on the ground that there is an uncured material failure of performance.…In such cases it is common to state the issue…in terms of whether there has been substantial performance.…If there has been substantial although not full performance, the building contractor has a claim for the unpaid balance and the owner has a claim only for damages. If there has not been substantial performance, the building contractor has no claim for the unpaid balance, although he may have a claim in restitution.

The contest here is between the one who claims discharge by the other’s material breach and the one who asserts there has been substantial performance. What constitutes substantial performance is a question of fact, as illustrated in Section 15.2.1 "Substantial Performance; Conditions Precedent", TA Operating Corp. v. Solar Applications Engineering, Inc. The doctrine has no applicability where the breaching party willfully failed to follow the contract, as where a plumber substitutes a different faucet for the one ordered; installation of the incorrect faucet is a breach, even if it is of equal or greater value than the one ordered.

Under the UCC, there is no such thing as substantial performance. Section 2-601 requires that the goods delivered according to the contract be the exact things ordered—that there be a perfect tenderThe precise performance of a contractual obligation. (unless the parties agree otherwise).

When a promisor announces before the time his performance is due that he will not perform, he is said to have committed an anticipatory breach (or repudiation)A communication that informs a party that the obligations of the original contract will not be fulfilled when due; gives rise to an immediate right to sue.. Of course a person cannot fail to perform a duty before performance is due, but the law allows the promisee to treat the situation as a material breach that gives rise to a claim for damages and discharges the obligee from performing duties required of him under the contract. The common-law rule was first recognized in the well-known 1853 British case Hochster v. De La Tour. In April, De La Tour hired Hochster as his courier, the job to commence in June. In May, De La Tour changed his mind and told Hochster not to bother to report for duty. Before June, Hochster secured an appointment as courier to Lord Ashburton, but that job was not to begin until July. Also in May, Hochster sued De La Tour, who argued that he should not have to pay Hochster because Hochster had not stood ready and willing to begin work in June, having already agreed to work for Lord Ashburton. The court ruled for the plaintiff Hochster:

[I]t is surely much more rational, and more for the benefit of both parties, that, after the renunciation of the agreement by the defendant, the plaintiff should be at liberty to consider himself absolved from any future performance of it, retaining his right to sue for any damage he has suffered from the breach of it. Thus, instead of remaining idle and laying out money in preparations which must be useless, he is at liberty to seek service under another employer, which would go in mitigation of the damages to which he would otherwise be entitled for a breach of the contract. It seems strange that the defendant, after renouncing the contract, and absolutely declaring that he will never act under it, should be permitted to object that faith is given to his assertion, and that an opportunity is not left to him of changing his mind.

Another type of anticipatory breach consists of any voluntary act by a party that destroys, or seriously impairs, that party’s ability to perform the promise made to the other side. If a seller of land, having agreed to sell a lot to one person at a date certain, sells it instead to a third party before that time, there is an anticipatory breach. If Carpenter announces in May that instead of building Owner’s deck in July, as agreed, he is going on a trip to Europe, there is an anticipatory breach. In the first instance, there would be no point to showing up at the lawyer’s office when the date arrives to await the deed, so the law gives a right to sue when the land is sold to the other person. In the second instance, there would be no point to waiting until July, when indeed Carpenter does not do the job, so the law gives the right to sue when the future nonperformance is announced.

These same general rules prevail for contracts for the sale of goods under UCC Section 2-610.

Related to the concept of anticipatory breach is the idea that the obligee has a right to demand reasonable assurances from the obligor that contractual duties will be performed. If the obligee makes such a demand for reasonable assurancesA demand to be reassured that contractual performance will be forthcoming when reasonable grounds for insecurity arise with respect to the performance of the other party; failure to get such is an anticipatory breach. and no adequate assurances are forthcoming, the obligee may assume that the obligor will commit an anticipatory breach, and consider it so. That is, after making the contract, the obligee may come upon the disquieting news that the obligor’s ability to perform is shaky. A change in financial condition occurs, an unknown claimant to rights in land appears, a labor strike arises, or any of a number of situations may crop up that will interfere with the carrying out of contractual duties. Under such circumstances, the obligee has the right to a demand for reasonable assurance that the obligor will perform as contractually obligated. The general reason for such a rule is given in UCC Section 2-609(1), which states that a contract “imposes an obligation on each party that the other’s expectation of receiving due performance will not be impaired.” Moreover, an obligee would be foolish not to make alternative arrangements, if possible, when it becomes obvious that his original obligor will be unable to perform. The obligee must have reasonable grounds to believe that the obligor will breach. The fear must be that of a failure of performance that would amount to a total breach; a minor defect that can be cured and that at most would give rise to an offset in price for damages will not generally support a demand for assurances.

Under UCC Section 2-609(1), the demand must be in writing, but at common law the demand may be oral if it is reasonable in view of the circumstances. If the obligor fails within a reasonable time to give adequate assurance, the obligee may treat the failure to do so as an anticipatory repudiation, or she may wait to see if the obligor might change his mind and perform.

Contracts can be discharged by performance: complete performance discharges both sides; material breach discharges the breaching party, who has a right to claim damages; substantial performance obligates the promisee to pay something for the benefit conferred but is a breach. A party may demand reasonable assurances of performance, which, if not forthcoming, may be treated as an anticipatory breach (or repudiation).

Exercises

  1. What types of performance discharge a contractual obligation?
  2. Under the UCC, what is the difference between cancellation and termination of a contract?
  3. What is an anticipatory breach, and under what circumstances can a party claim it?