Contract Law

A contract is an agreement entered into by two or more parties with the serious intention of creating a legal obligation; i.e., an obligationary agreement.

A contract in South Africa is classified as an obligationary agreement—it creates enforceable obligations—and ought therefore to be distinguished from absolving agreements (whereby obligations are discharged or extinguished; e.g. release, novation), real or transfer agreements (whereby rights are transferred; e.g. cession), and change-in-status agreements. [2] [3]

Requirements

For a contract to be considered valid and binding in South Africa, the following requirements must be met: 1. There must be consensus ad idem between the contracting parties. 2. The parties must have seriously intended the agreement to result in terms which can be enforced. 3. The parties must have the capacity to contract. 4. The agreement must have certain and definite terms. 5. The necessary formalities must be observed. 6. The agreement must be lawful. [4] 7. The contractual obligations must be possible of performance. 8. The content of the agreement must be certain. The requirements are discussed in greater detail below.

Characteristics

The modern concept of contract is generalised so that an agreement does not have to conform to a specific type to be enforced, but contracting parties are required to conduct their relationship in good faith (bona fides).

Contract and the law of obligations

Contract law forms part of the law of obligations. An obligation is a legal bond (vinculum iuris) between two or more parties, obliging the obligor (the ‘debtor’) to give, do or refrain from doing something to or for the obligee (the ‘creditor’). The right created by an obligation is personal, a ius in personam, as opposed to a real right (ius in re). The words ‘creditor’ and ‘debtor’ apply not only in respect of a claim for money, but to a claim for anything else that is owed—whether unconditionally, conditionally, or in the future. If an obligation is enforceable by action in a court, it is a civil obligation, rather than the less common and unenforceable natural obligation. ‘The most important point’, in discussing the legal effect of contracts, is ‘the duty of the parties to perform their obligations’. [5]

Contract and delict

The primary sources of obligations are contract and delict , the latter being wrongful and blameworthy conduct that harms a person. There is a close similarity between a breach of contract and a delict, in that both are civil wrongs and may give rise to a duty to pay damages as compensation . It is unsurprising, then, that certain conduct may constitute both a breach of contract and a delict (as when, in Van Wyk v Lewis, [6] a surgeon negligently left a cotton swab inside a patient’s body), in which case there is concurrent liability , permitting the plaintiff to sue on either basis.

Contract and unjustified enrichment

Another source of obligations is unjustified enrichment, which occurs when wealth shifts from one person’s patrimony to another’s without legal justification. Where a party transfers an asset to another in performance of a contract that is for some reason invalid, the shift of wealth is without good cause (or sine causa), and an enrichment action for the restitution of the asset lies.

Contract and the law of property

Many commercial transactions involve both the law of obligations and the law of property , and so have both proprietary and obligationary or contractual elements. A contract of sale, for instance, obliges the seller to deliver the thing being sold to the buyer. As such, it is the causa, or underlying reason, for the subsequent transfer of ownership. It does not, however, effect the transfer, which is accomplished by the real or transfer agreement (the concurring intentions of the parties to make and receive transfer of ownership). If the underlying contract is invalid, ownership nonetheless passes, because South African law adheres to the abstract rather than the causal system of transfer. The transferor, however, generally has the option of a restitutionary action to recover the property.

Historical development of contract

Roman law

Roman law recognised a number of distinct contract types (e.g. contracts consensu, re, verbis and litteris) which were binding only if they were ‘clothed’ in special forms and formulas; [7] in other words, Roman law had ‘a law of contracts, rather than of contract’. [1] This distinguishes it from the modern practice of regarding any obligationary agreement meeting certain general requirements as an enforceable contract. Only for contracts consensu (e.g. sale, lease, partnership and mandate) was mutual assent (consensus ad idem) ‘clothed’ in solemnities sufficient to make the agreement enforceable. Any agreement that did not rigidly conform to the four types was referred to as anudum pactum and was not actionable unless there had been part performance. The development of contracts consensu was prompted by the commercial needs of the growing Roman state, but Roman law never reached the point of enforcing all serious and deliberate agreements as contracts. [8]

Roman-Dutch law

The Roman-Dutch law of contract recognised the canon law principle that all serious agreements ought to be enforced (pacta sunt servanda). [8] Adopting the canonist position, all contracts were said to be an exchange of promises that were consensual and bonae fidei, that is, based simply on mutual assent and good faith. Under the causatheory, for the contract to be binding it had to have a causa, or lawful contractual motive. A nudum pactum was redefined as any agreement unenforceable for lack of causa.

In the late 19th century and influenced byEnglish law and Lord Henry de Villiers CJ, the courts reinterpretediusta causa as valuable consideration, a quid pro quo, and necessary for a valid contract.

Causa and consideration

Under Roman-Dutch law, the broad notion of causa was necessary to create obligations and could include love and affection, moral consideration, or past services, among other things. Contractual relationships required a iusta causa rising from a lawful or just right, title, or cause of action. [9] Therefore, for a contract to be enforceable, it must be shown to be based on a iusta causa, or reasonable motive. [10] Lingering views that a iusta causa was still a necessary element of contract during English rule gave rise to a celebrated dispute in early South African law. [11]

In the late 19th century, under the general influence of English law ‘and the particular dominating influence of Lord Henry de Villiers CJ’, the courts reinterpreted iusta causato be valuable consideration (causa lucrativa), a quid pro quo, and necessary for a valid contract. [12] This was met with fierce resistance by northern jurists like John Gilbert Kotzé, and later rejected outright by the Transvaal Supreme Court in Rood v Wallach, [13] De Villiers, however, refused to concede the point, so that the dispute continued until, almost 50 years after it began, it was settled in the famous case of Conradie v Rossouw, [14] where the court took the view that a binding contract may be constituted by any serious and deliberate agreement made with the intention of creating a legal obligation, rejecting the consideration doctrine of English law. [10] It seems now to be clear that a iusta causa, in whatever form, is not a separate requirement in the South African law of contract. [15] ‘That a contract, in order to be valid, must have been seriously intended by the parties [as well as the other obvious elements such as lawful and performable], is a matter of course … [and] does not need causa as an independent element’. [10]

Basis

Actual subjective agreement

Genuine agreement (or consensus) as the basis for contractual obligations, presupposes an actual mutual assent of the parties. Subjective consensus of this nature exists when all the parties involved:

Objective agreement

Where there is a divergence between the true intention and the expressed or perceived intention of the parties, the question of whether or not a legal system will uphold a contract depends on its approach to contract: Is it subjective (focused on an actual consensus), or is it apparent or objective (focused on the external appearance of agreement)? [17]

Theories of contract

Will theory

The will theory of contract postulates an extremely subjective approach to contract, whereby consensus is the only basis for contractual liability. The upshot is that, if there is no genuine concurrence of wills, there can be no contract. It is generally agreed, though, that unqualified adherence to this theory would produce results both unfair and economically disastrous. [17]

Declaration theory

The declaration theory, in contrast, stipulates that the only important consideration is the external manifestation of the parties’ wills. The true basis of contract, then, is to be found in the concurring declarations of the parties, not in what they actually think or intend. [18] This extremely objective approach has also generally been found to be unacceptable in practice, unless it is qualified. [19] [20]

Reliance theory

In terms of the compromise reliance theory, the basis of contract is to be found in a reasonable belief, induced by the conduct of the other party, in the existence of consensus. This protects a party’s reasonable expectation of a contract. The reliance theory should be seen as a supplement to the will theory, affording an alternative basis for contract in circumstances where the minds of the parties have not truly met. [20]

South African approach

South African law, with its Roman-Dutch roots, but strongly influenced by English law, has vacillated between a subjective and an objective approach to contract. [21] It is now clear, however, that the subjective will theory is the point of departure; in cases of dissensus, the shortcomings of that theory are corrected by an application of the reliance theory. [22]

Proving the existence of a contract

The onus of proving the existence of a contract rests on the person who alleges that the contract exists. [22]

Cornerstones

Fundamental concepts in the law of contract include:

There is mounting competition between them. As Hutchison and Pretorius (2009) note, ‘The law of contract is currently undergoing a process of quite profound change and renewal as it adapts to meet the demands of the new constitutional era in South Africa’. [24] Freedom of contract especially is under pressure, as the courts are increasingly willing to use public policy as grounds to strike down unfair contracts. [24] The legislature, too, is willing to intervene in private contracts in the interests of fairness, [24] most notably with the National Credit Act [25] and the Consumer Protection Act. [26] The latter prohibits certain terms or conditions outright, with the result that they are void to the extent of non-compliance. Where terms are not prohibited outright, they are subject to a requirement of fairness and reasonableness.

All law, including the common law of contract, is subject to constitutional control. The Constitution therefore exerts a strong if indirect influence on the law of contract: ‘The principles of administrative justice frame the contractual relationship, it has been said, and the Constitution requires that all administrative action must be lawful, reasonable and procedurally fair’. [27] [28] [29] To what extent the Constitution can be invoked directly to challenge the validity of a contractual provision between private parties is a contentious question. The Constitutional Court appears to prefer an indirect application of the Constitution between private parties: an approach that tests the validity of a private contractual provision against the requirements of public policy, but also recognises that public policy is now determined with reference to the fundamental values embodied in the Constitution, and particularly in the Bill of Rights. The courts have shown a willingness to intervene if a party exercises a contractual power in a manner that fails to respect the constitutional rights of another party, and may even, in appropriate circumstances, be willing to compel one party to contract with another on constitutional grounds.

Offer and acceptance

The rules of offer and acceptance constitute a useful, but not essential, analytical tool in understanding the formation of contracts. An offer is a statement of intent in which the offeror expresses (to the person to whom the offer is conveyed) the performance and the terms to which he is prepared to bind himself. Being a unilateral declaration, an offer does not in itself give rise to a binding obligation. For an offer to be valid, it must be: