The Contract: Core Rules

Overview

The contract (contrat) is the principal source of obligations under Quebec civil law. Art. 1378 CCQ defines it as an agreement of wills by which one or more persons obligate themselves to one or more others to perform a prestation. The general rules governing contracts, found at arts. 1378 to 1456 CCQ, apply to all contracts unless the parties have validly derogated from them under art. 9 CCQ. The named contracts regulated in Book Five, Title Two of the CCQ supplement these general provisions. This article covers the classification, formation, effects, and nullity of contracts, with particular attention to the protective regime applicable to adhesion contracts (contrats d'adhesion) and consumer contracts (contrats de consommation).

Learning Objectives

After reading this article, you should be able to:

Distinguish the principal categories of contracts recognized by the CCQ, including adhesion and consumer contracts
Identify the essential conditions for the valid formation of a contract under art. 1385 CCQ
Explain the four defects of consent and the sanctions available to each affected party
Apply the distinction between absolute nullity (nullite absolue) and relative nullity (nullite relative) to formation defects
Describe the binding force of contracts between the parties and their relative effect on third parties
Recognize the protective provisions governing external, illegible, incomprehensible, and abusive clauses in adhesion and consumer contracts

Key Concepts and Definitions

Contract (contrat): an agreement of wills creating obligations between parties (art. 1378 CCQ).
Adhesion contract (contrat d'adhesion): a contract whose essential stipulations are imposed by one party without negotiation (art. 1379 CCQ).
Consumer contract (contrat de consommation): a contract between a natural person and a party carrying on an enterprise, for personal, family, or domestic purposes (art. 1384 CCQ).
Consent (consentement): the free and informed agreement of a person to be bound by a contract (arts. 1385, 1399 CCQ).
Offer (offre): a serious, complete, and precise proposal to contract (art. 1388 CCQ).
Nullity (nullite): the sanction that retroactively destroys a contract formed in violation of an essential condition.
Good faith (bonne foi): the standard of honest and reasonable conduct required in the formation and performance of obligations (art. 1375 CCQ).

Classification of Contracts

The CCQ defines several categories of contracts. A contract may be synallagmatic (bilateral, creating reciprocal obligations) or unilateral (binding only one party). It may be onerous (each party receives an advantage) or gratuitous (one party confers a benefit without receiving one). Contracts may also be commutative (obligations certain at formation) or aleatory (performance depends on an uncertain event), and they may involve instantaneous or successive performance.

Two classifications carry special protective regimes that merit closer analysis.

The adhesion contract is characterized by three features under art. 1379 CCQ. First, the adhering party enjoys no real ability to negotiate the essential stipulations. To assess the ability to negotiate, courts consider the circumstances surrounding formation. Apparent concessions of minor importance or illusory scope ("courtesy clauses") do not establish genuine negotiation. A clause stating that "the parties acknowledge they had the opportunity to negotiate" does not prove negotiation actually occurred. Second, the stipulations at issue must be essential, meaning they hold genuine importance for the adherent. Exclusion-of-warranty, limitation-of-liability, and default clauses have been recognized as essential stipulations. Third, the essential stipulations were imposed by, drafted by, or drafted on instructions from the other party. Courts have qualified many contract types as adhesion contracts, including electricity service agreements, distribution contracts, construction contracts, and employment contracts. The burden of establishing the adhesion character falls on the party seeking the associated protections.

The consumer contract under art. 1384 CCQ must involve a natural person and a counterparty carrying on an enterprise (entreprise), and the natural person must be contracting for personal, family, or domestic purposes. The concept of enterprise under art. 1525 CCQ replaces the former notion of commerciality and is broader, capturing professionals, artisans, and others engaged in organized economic activity. Consumer contracts benefit from the same CCQ protective regime as adhesion contracts (arts. 1432, 1435 to 1437 CCQ). The Consumer Protection Act (Loi sur la protection du consommateur, LPA) provides additional protections whose definitional scope differs slightly, relying on the notion of a merchant (commercant) rather than enterprise. The Supreme Court of Canada has confirmed that banks are subject to the LPA.

Freedom of Contract and Its Limits

The will of the parties plays a central role in contract law. Art. 1378 CCQ defines the contract as an agreement of wills, and art. 9 CCQ permits the parties to derogate from the provisions of the Code unless those provisions concern public order (ordre public). No formality is required for formation unless the law or the parties impose one (art. 1385 CCQ). Because the contract springs from the will of both parties, it has binding force between them (art. 1434 CCQ).

This freedom of contract (liberte contractuelle) is tempered by limits on both form and substance. Regarding form, the CCQ imposes three types of formalism. Solemn formalism requires certain contracts to be notarized on pain of absolute nullity (art. 1385 CCQ); examples include the marriage contract (art. 440 CCQ), the gift of an immovable (art. 1824 CCQ), and the immovable hypothec (art. 2693 CCQ). Protective formalism safeguards incapable persons or consumers; breach gives rise to relative nullity. Publication formalism requires registration of real rights affecting immovables so that they are opposable to third parties (art. 2938 CCQ); failure to register does not invalidate the contract between the parties but renders it without effect against third parties (art. 2941 CCQ).

Regarding substance, the parties must respect public order (art. 9 CCQ). The content of this evolving concept derives from statute and from judicial interpretation, informed by the Charter of Human Rights and Freedoms (Charte des droits et libertes de la personne). A distinction exists between public order of direction (ordre public de direction), which protects the general interest, and public order of protection (ordre public de protection), which safeguards particular interests.

Formation of the Contract

Art. 1385 CCQ identifies the conditions for valid contract formation: consent (consentement), capacity (capacite), an object (objet), a cause (cause), and, where required, compliance with prescribed formalities. The Preliminary Provision of the CCQ adds the requirement that fundamental rights be respected.

Consent may be expressed or tacit (art. 1386 CCQ). The standard mechanism for exchanging consent involves an offer (offre) followed by an acceptance (acceptation).

The offer must be serious, complete, and precise (art. 1388 CCQ). It must contain all essential elements of the proposed contract and manifest a genuine intention to be bound upon acceptance. A job listing that reserves the employer's right to reject applicants constitutes an invitation to negotiate, not an offer. An offer may be directed at a determinate or indeterminate person, such as a printed or online catalogue, and may include a term for acceptance (art. 1390 CCQ).

An offer may always be revoked before the offeree receives it, because no prejudice results (art. 1391 CCQ). An offer without a term remains revocable until the offeror receives acceptance, though an abusive revocation in bad faith may give rise to extra-contractual damages under arts. 7, 1375, and 1457 CCQ. An offer with a fixed term may not be withdrawn during that period (art. 1390 CCQ). An offer lapses (caducite) upon refusal, expiry of the stated or a reasonable term, or death, bankruptcy, or institution of tutorship of either party before acceptance is received (art. 1392 CCQ).

Acceptance must be substantially conforming to the offer with respect to its essential elements (art. 1393 CCQ). A modification of the terms constitutes a counter-offer, and the original offer lapses. Silence does not amount to acceptance unless the parties' relationship, the law, or particular circumstances indicate otherwise (art. 1394 CCQ). An offer of reward is deemed accepted once a person performs the requested act, even without knowledge of the offer (art. 1395 CCQ).

For contracts between persons not in each other's presence, the contract is formed at the time and place where the offeror receives the acceptance (art. 1387 CCQ). The Act to Establish a Legal Framework for Information Technology supplements this rule for electronic communications, providing presumptions about receipt of technological documents (art. 31).

Promises to Contract

A unilateral promise (promesse unilaterale), or option, is a preparatory contract in which one party (the promisor) binds itself to contract with the beneficiary if the latter accepts within the stipulated or a reasonable term. Only the promisor assumes an obligation, making it a contract with unilateral effect. A unilateral promise differs from a mere offer in three respects: the promisor is bound once the beneficiary agrees to consider the promise; the promise survives the promisor's death (art. 1441 CCQ); and specific performance may be ordered (arts. 1601, 1712 CCQ). Art. 1396 CCQ creates a presumption that an offer made to a specific person who agrees to consider it constitutes a promise to contract.

In a promise of sale, any sum paid is presumed to be a deposit deducted from the sale price if the option is exercised, unless the parties stipulate otherwise (art. 1711 CCQ). This is not earnest money (arrhes) that would permit either party to withdraw.

A bilateral promise (promesse synallagmatique) binds both parties reciprocally to conclude the final contract. Under art. 1396 CCQ, a promise alone does not constitute the envisaged contract, but a promise of sale accompanied by delivery and possession is deemed equivalent to a sale (art. 1710 CCQ).

A pact of preference (pacte de preference) obliges a party, should it decide to contract, to offer priority to the beneficiary. It differs from a unilateral promise because the promisor's obligation arises only if the promisor independently decides to enter the envisaged contract. The pact must be interpreted restrictively because it restricts the right to dispose of property.

If a promisor refuses to honour a promise of sale, the beneficiary may bring an action for forced execution of title (action en passation de titre, art. 1712 CCQ), seek resolution with damages (arts. 1597, 1605 CCQ), or claim damages if the promisor has already contracted with a third party in violation of the promise (art. 1397 CCQ).

Consent must be free and informed (art. 1399 CCQ). Four defects may vitiate it: simple error, error induced by fraud, fear, and lesion.

Simple error (erreur simple) is a false belief about reality arising without dishonesty from the other party. The CCQ recognizes error on three grounds: the nature of the contract, the object of the prestation, or an essential element (art. 1400 CCQ). The error must have been determinative of consent, meaning the party would not have contracted had it known the truth. Error on economic value alone is not recognized unless it results from error on an essential element. Error on personal motives is excluded unless the party disclosed the importance of those motives to the other party, converting them into an essential element. Inexcusable error, meaning grossly negligent error, cannot ground nullity (art. 1400 CCQ). The sanction for simple error is relative nullity alone (art. 1407 CCQ), with a three-year prescriptive period from discovery (arts. 2925, 2927 CCQ).

Example: A buyer purchases what they believe to be an authentic painting by a recognized artist, but it is a reproduction. Neither party is aware of the error. If the error bears on an essential element of consent, the buyer may seek nullity, provided the error was not inexcusable.

Fraud (dol) consists of error provoked by the other party's fraudulent manoeuvres, lies, or deliberate silence or reticence (art. 1401 CCQ). Fraud broadens the domain of nullity: error on value or an otherwise inexcusable error may ground annulment when provoked by fraudulent conduct. Silence or reticence constitutes fraud when one party knowingly fails to correct the other's mistaken belief, reflecting the duty of pre-contractual information required by good faith (art. 1375 CCQ). The victim may choose between nullity with damages or maintenance of the contract with a reduction of obligations equivalent to damages (art. 1407 CCQ).

Fear (crainte) vitiates consent when a party contracts under threats or undue pressure regarding serious prejudice to the party, their property, or the person or property of others (art. 1402 CCQ). The threat must be determinative, evaluated using both subjective and objective criteria. The legitimate exercise of a right does not constitute fear, but abusive exercise of a right does (art. 1403 CCQ). A contract signed under a state of necessity remains valid if the other party acted in good faith; exploitation of the situation in bad faith vitiates consent (art. 1404 CCQ). The victim may obtain nullity with damages or a reduction of obligations (art. 1407 CCQ).

Lesion (lesion) has both an objective dimension (serious disproportion of prestations at formation, art. 1406 CCQ) and a subjective dimension (patrimonial prejudice to the contracting party, art. 1406 CCQ). Under art. 1405 CCQ, lesion as a defect of consent is available only to minors and adults under tutorship (majeurs en tutelle). A minor or protected adult who contracts for ordinary needs may obtain nullity or a reduction of obligations by proving subjective prejudice (art. 163 CCQ). Exceptions permitting lesion between capable adults exist in specific provisions: art. 2332 CCQ (money loans), art. 424 CCQ (renunciation of family patrimony partition), arts. 8 and 9 LPA (consumer contracts), and art. 48 of the Charter of Human Rights and Freedoms (exploitation of elderly or disabled persons).

Other Essential Conditions

Capacity (capacite): art. 1385 CCQ requires that contracting parties be capable of binding themselves. Art. 1398 CCQ requires that a person giving consent be apt to do so, that is, conscious of their actions. A person temporarily unable to give consent (for example, a person severely intoxicated at the time of contracting) may invoke art. 1398 CCQ and seek relative nullity, even without a formal tutorship regime (art. 1421 CCQ).

Cause (cause): the personal reason for the party's commitment (art. 1410 CCQ). The cause must not be prohibited by law or contrary to public order (art. 1411 CCQ). Courts use the subjective cause as an instrument for controlling the lawfulness of the contract.

Object (objet): the juridical operation envisaged by the contract (art. 1412 CCQ). The object of the obligation must be possible, determined or determinable, and lawful (arts. 1373, 1413 CCQ). The property forming the object of the prestation may be determined only as to kind, provided its quantity is determinable (art. 1374 CCQ).

Formalities: where the law or the parties require a particular form, compliance is an additional essential condition (art. 1414 CCQ).

Nullity of Contracts

Under the modern theory of nullity (nullite), the distinction between absolute and relative nullity turns on the nature of the interest protected, not on the classical distinction between existence and validity of a juridical act.

Absolute nullity (nullite absolue) protects the general interest (art. 1417 CCQ). Any person with a born and actual interest may invoke it, and the court may raise it on its own motion (art. 1418 CCQ). A contract struck with absolute nullity cannot be confirmed. Typical grounds include violation of public order of direction, illegality of the cause or object, breach of an incapacity of enjoyment, and non-compliance with solemn formalities.

Relative nullity (nullite relative) protects private interests (art. 1419 CCQ) and may be invoked only by the protected party or, exceptionally, by the good-faith counterparty suffering serious prejudice from the contract's continuation (art. 1420 CCQ). Relative nullity may be confirmed if the protected party knows the defect and clearly and evidently intends to confirm (art. 1423 CCQ). Grounds include defects of consent, incapacity of exercise, inaptitude to consent (art. 1398 CCQ), and non-compliance with protective formalities.

Both forms of nullity destroy the contract retroactively (art. 1422 CCQ) and trigger the rules on restitution of prestations (arts. 1699 ff. CCQ). Partial nullity is available if only a severable portion of the contract is affected (art. 1438 CCQ). The prescriptive period is three years from discovery of the defect (arts. 2925, 2927 CCQ). A defence based on nullity does not prescribe (art. 2882 CCQ). Art. 1421 CCQ creates a simple presumption that a contract failing to meet formation requirements is subject to relative nullity.

In addition to nullity, a victim may claim damages when the formation defect results from the other party's fault (art. 1457 CCQ). In cases of fraud, fear, or lesion, the victim may opt to maintain the contract and request a reduction of obligations (art. 1407 CCQ). In cases of lesion, the court may maintain the contract if the advantaged party offers a reduction of its claim or an equitable pecuniary supplement (art. 1408 CCQ).

Effects of the Contract Between the Parties

Binding Force and Contractual Content

Under art. 1434 CCQ, the parties are bound by the explicit and implicit content of the contract. Three consequences follow. The contract has binding force (force obligatoire): a creditor may compel performance in kind or by equivalent (art. 1590 CCQ). The contract is irrevocable: neither party may withdraw unilaterally, though both may agree to terminate or rely on grounds recognized by law (art. 1439 CCQ). The contract is immutable: neither party may modify its terms unilaterally, absent a clear contractual clause permitting modification, whose terms must satisfy the requirements of arts. 1373 and 1374 CCQ.

The CCQ does not recognize the theory of unforeseeability (imprevision). The Supreme Court of Canada has confirmed that good faith and equity cannot reintroduce unforeseeability indirectly. Good faith requires cooperation and collaboration, prohibits inducing error or deriving undue advantage, and imposes a duty of information and counsel, but does not require a party to sacrifice its own interests. Parties may contractually provide for adaptation mechanisms through a hardship clause (clause de hardship).

Implicit obligations arise from the nature of the contract, usage, equity, or the law (art. 1434 CCQ). These include obligations of loyalty, safety, information, advice, and collaboration. Legislative provisions from the CCQ's named-contract titles, the LPA, and the Charter graft onto the contract automatically.

Interpretation of Contract Terms

When contractual terms are ambiguous, the court seeks the common intention of the parties rather than the literal meaning of the words (art. 1425 CCQ). External circumstances, prior interpretations, and usage inform this inquiry (art. 1426 CCQ). Interpretive rules favour giving effect to every clause (art. 1428 CCQ), selecting the meaning best suited to the subject matter (art. 1429 CCQ), and limiting general clauses to the scope intended (art. 1431 CCQ). In cases of doubt, the contract is interpreted against the stipulating party and in favour of the obligor; in adhesion and consumer contracts, this rule benefits the adherent or consumer (art. 1432 CCQ).

Protective Rules for Adhesion and Consumer Contracts

Three provisions give courts broad remedial authority in adhesion and consumer contracts to correct imbalances of bargaining power.

External clauses (art. 1435 CCQ): a clause not appearing in the contract text but incorporated by reference (for example, a franchise manual referenced in a franchise agreement) is valid in a mutual-agreement contract even if the other party is unaware of it. In adhesion and consumer contracts, such a clause is null if the other party failed to bring it to the adherent's or consumer's attention at formation. The defending party may attempt to prove the adherent's or consumer's actual knowledge but may not rely on constructive knowledge or trade usage.

Illegible or incomprehensible clauses (art. 1436 CCQ): a clause that is illegible (for instance, printed in excessively small type or buried within the document) or incomprehensible (drafted in overly technical language) is null in adhesion and consumer contracts. The court applies a reasonable-person standard. The Supreme Court of Canada has specified that the "average consumer" in Quebec consumer law refers to a credulous and inexperienced person, not a reasonably prudent and diligent one. The defending party may prove that adequate explanations were given at the relevant time.

Abusive clauses (art. 1437 CCQ): a clause that disadvantages the consumer or adherent in an excessive and unreasonable manner, contrary to the requirements of good faith, is null or the obligations flowing from it may be reduced. The CCQ provides an example: a clause so remote from the essential obligations governing the type of contract that it denatures it. A clause of exemption from liability that strips the contract of a fundamental obligation may be declared abusive. The assessment of excessiveness is made at formation, though a clause that is not abusive in itself may become so in application.

These protections are of public order. Boilerplate clauses purporting to waive them are null. Testimonial evidence is admissible to challenge such clauses, because the challenge attacks the validity of consent (art. 2864 CCQ).

Effects of the Contract on Third Parties

Under art. 1440 CCQ, the contract does not confer rights on third parties or impose obligations on them, but it is opposable to them and they cannot ignore it. A third party whose conduct causes a "contractual disruption" to a party may incur extra-contractual liability.

Universal heirs (heritiers universels) and heirs by universal title continue the juridical personality of the deceased and are bound by the deceased's contracts, except those that are intuitu personae (art. 1441 CCQ). Particular successors (ayants cause a titre particulier), such as purchasers, are true third parties and are not bound by their author's debts, but may benefit from personal rights attached as accessories to the transferred property (art. 1442 CCQ). In General Motors Products of Canada Ltd c. Kravitz, the Supreme Court of Canada recognized that the warranty against latent defects follows the property upon resale.

A promise of the act of another (promesse du fait d'autrui, art. 1443 CCQ) is a commitment by a promisor that a third party will assume an obligation. If the third party refuses, no link arises between the third party and the counterparty, and the promisor remains liable. This mechanism does not derogate from the relative-effect principle because the third party is bound only upon independent acceptance.

A stipulation for another (stipulation pour autrui, art. 1444 CCQ) creates a direct link between the promisor and a third-party beneficiary. The beneficiary acquires a contractual right from the moment the stipulant and promisor conclude their agreement, though the stipulant may revoke the stipulation until the beneficiary accepts (art. 1446 CCQ). The promisor may raise against the beneficiary all defences arising from the main contract (art. 1450 CCQ). This mechanism is common in life insurance, donations with charges, and immigration sponsorship contracts.

Simulation (simulation) occurs when parties conceal their true intentions behind an apparent contract and a secret counter-letter (contre-lettre, art. 1451 CCQ). Between the parties, the counter-letter governs. Third parties may rely on the apparent contract and are not bound by the counter-letter, though they may invoke it if it favours them (art. 1452 CCQ). In a conflict among third parties, the apparent contract prevails. An action to declare simulation prescribes in ten years (art. 2922 CCQ).

Practice Checklist

Verify whether the contract is one of adhesion or a consumer contract, as this determines access to the protective regime under arts. 1435 to 1437 CCQ.
Confirm that all essential conditions of formation are satisfied: consent, capacity, cause, object, and any required formalities (art. 1385 CCQ).
Assess whether any defect of consent (error, fraud, fear, lesion) may affect validity; identify the applicable sanction and the three-year prescriptive period.
For promises to contract, distinguish between a unilateral promise, a bilateral promise, and a pact of preference, and verify the applicable term.
In consumer transactions, consider simultaneously the CCQ protective regime and the LPA for additional or parallel remedies.
Evaluate whether any contractual clause may be external, illegible, incomprehensible, or abusive within the meaning of arts. 1435 to 1437 CCQ.
Determine whether the nullity at issue is absolute or relative, as this affects standing, confirmability, and the court's power to raise nullity on its own motion.
For contracts with third-party ramifications, verify whether a stipulation for another, a promise of the act of another, or a simulation may be present.

Glossary

Abusive clause (clause abusive): a clause that disadvantages the adherent or consumer in an excessive and unreasonable manner, contrary to good faith (art. 1437 CCQ).
Adhesion contract (contrat d'adhesion): a contract whose essential stipulations were imposed by one party without negotiation (art. 1379 CCQ).
Binding force (force obligatoire): the principle that a validly formed contract binds the parties and may be judicially enforced (art. 1434 CCQ).
Cause (cause): the personal reason for a party's commitment (art. 1410 CCQ); must not contravene public order.
Consumer contract (contrat de consommation): a contract between a natural person and an enterprise for personal, family, or domestic purposes (art. 1384 CCQ).
Counter-letter (contre-lettre): the secret agreement between parties to a simulation, reflecting their true intent (art. 1451 CCQ).
Fear (crainte): a defect of consent arising from threats or undue pressure (art. 1402 CCQ).
Fraud (dol): a defect of consent caused by the other party's fraudulent manoeuvres, lies, or intentional silence (art. 1401 CCQ).
Lapse (caducite): the loss of effect of an offer due to refusal, expiry, or supervening events (art. 1392 CCQ).
Lesion (lesion): a serious disproportion of prestations or patrimonial prejudice from contract formation (art. 1406 CCQ).
Nullity (nullite): the retroactive destruction of a defective contract; may be absolute or relative.
Offer (offre): a serious, complete, and precise proposal to contract (art. 1388 CCQ).
Public order (ordre public): mandatory rules from which parties may not derogate (art. 9 CCQ); may be directional or protective.
Relative effect (effet relatif): the principle that a contract binds only the parties and does not confer rights on or impose obligations upon third parties (art. 1440 CCQ).
Simple error (erreur simple): a false belief about reality, not provoked by the other party, affecting consent (art. 1400 CCQ).
Stipulation for another (stipulation pour autrui): a contractual mechanism creating a right in favour of a third-party beneficiary (art. 1444 CCQ).

References

Civil Code of Quebec (CCQ), arts. 7, 9, 157, 161 to 165, 172 to 174, 287 to 290, 297.7, 440, 625, 631, 732 to 734, 823, 897, 1371 to 1456, 1500, 1517, 1525, 1590, 1597, 1601, 1605, 1607, 1609, 1627, 1631, 1693, 1694, 1699 ff., 1708 to 1712, 1783, 1793, 1813, 1817, 1823, 1824, 2313, 2332, 2333, 2346, 2634, 2644, 2693, 2803, 2847, 2862 to 2864, 2882, 2922, 2925, 2927, 2938, 2941, 3148.
Consumer Protection Act (LPA), CQLR c P-40.1, arts. 1, 2, 3, 8, 9, 54.4, 215 ff., 217 ff., 261, 262.
Charter of Human Rights and Freedoms, CQLR c C-12, arts. 48, 49.
Act to Establish a Legal Framework for Information Technology, CQLR c C-1.1, art. 31.
General Motors Products of Canada Ltd c. Kravitz, [1979] 1 SCR 790.

Disclaimer

This article is provided for educational purposes only and does not constitute legal advice. It should not be relied upon as a substitute for professional consultation. Laws and their interpretation may change. For advice specific to your situation, consult a qualified Quebec legal professional.

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