Enterprise and Service Contracts: Performance and Price
- Lesson 22 of 37
- Core
- 16 min
- Reviewed
By James R. GosnellEducational material, not legal advice.
Key points
Independent providers must perform the agreed undertaking diligently, inform the client and respect the standards of their field. The agreement and the applicable pricing method determine who bears increased costs and what evidence supports an additional charge.
Overview
A consultant promises a report, a technician undertakes a repair, and a manufacturer agrees to produce a custom machine. Each transaction requires analysis of the promised performance, the provider's independence, and the allocation of financial risk. Calling an agreement a or paying an hourly rate does not settle its legal classification. The classification determines which obligations govern performance, what evidence proves a breach, and how the price may change.
Under , a (contrat d'entreprise ou de service) joins a remunerated undertaking to perform material or intellectual work or supply a service. Its general rules extend beyond construction. The analysis below addresses classification, formation, performance and price. The separate lesson on termination of enterprise and service contracts explains departure from the relationship and the closing account.
Learning Objectives
- Classify an independent undertaking and identify the obligations attached to its particular performance.
- Allocate the burden of proof for defective performance, inadequate information and contested charges.
- Distinguish an , payment according to value and a fixed price when resolving an overrun.
Classification and formation
Independence and the promised undertaking
gives the provider freedom to choose the means of performance and excludes (subordination) to the client in carrying out the contract. Independence is assessed through the actual relationship. Control of working hours, discretion to refuse assignments, choice of methods, access to assistants and responsibility for execution are relevant indicators. No single indicator necessarily determines the answer. Payment by the hour can remunerate an independent professional; payment by invoice cannot erase an actual relationship of subordination.
The client's right to specify the desired product, set a deadline and inspect conformity can coexist with the provider's autonomy. The distinction becomes sharper when the client directs how tasks must be performed on a continuing basis. A carefully drafted statement of independence has limited value if daily practice establishes the opposite. Evidence should therefore include instructions, scheduling practices, authority to replace personnel and the parties' conduct, alongside the signed agreement.
An enterprise commonly centres on an identifiable work, including an intellectual product; services commonly centre on activities supplied to the client. These categories share general rules, but provisions addressed specifically to works cannot automatically be extended to every continuing service. Similarly, the professional's title does not decide whether every obligation is one of reasonable care or guaranteed achievement.
Sale, mandate and mixed undertakings
A mandate (mandat) concerns juridical acts performed through representation, under Preparing technical advice for a client ordinarily supplies a service. Concluding an agreement in the client's name engages representation. One relationship may contain both functions, so the relevant undertaking must be identified before selecting its governing rules. The everyday expression “giving a mandate” does not establish a legal power to represent someone.
distinguishes a (vente) where the work or service is merely accessory relative to the value of the property supplied. Compare the value of the work with that of the goods, rather than assuming that customization necessarily creates an enterprise contract. Buying expensive standard equipment with minor installation differs from commissioning an integrated system whose design and implementation comprise substantial work. Neither the invoice heading nor a single description such as “turnkey” replaces that comparison.
For a mixed contract, identify the principal undertaking that motivated the transaction and the distinct obligations relevant to the dispute. An adviser who also purchases equipment in the client's name may have service and mandate obligations. A machine supplier may owe seller's warranties concerning supplied components even though the overall agreement is an enterprise contract. Classification should follow the disputed performance closely enough to avoid applying one label mechanically to unrelated duties.
Consent, scope and proof
The general consensual rule in applies. Subject to special requirements, agreement may form without a signed instrument. Capacity, valid consent, and lawful cause and object remain necessary. An uncertain final price does not necessarily prevent formation because supplies methods of determining remuneration. The evidence must nevertheless establish agreement to a remunerated undertaking, rather than preliminary discussions or an invitation to submit a proposal.
Record deliverables, exclusions, client inputs, deadlines, acceptance criteria, payment stages and the authority to approve changes. An email accepting a technical proposal may establish these elements, but inconsistencies between attachments can create genuine interpretive disputes. Distinguish proof that a contract exists from proof of its complete contents. Actual performance and payment may support the former without establishing the provider's claimed fixed price or every exclusion printed on a later invoice.
Consumer transactions, regulated professional services and public procurement can attract additional formation rules. The general absence of a required form does not displace a special writing requirement or statutory restrictions on awarding public contracts. Identify the parties and the transaction before relying on a purely consensual analysis. This lesson's ordinary price examples assume no additional statutory regime changes the result.
Performance and the intensity of obligations
requires prudence and diligence, action in the client's best interests, compliance with (règles de l'art), and conformity with the contract where applicable. These minimum requirements cannot simply be removed by a clause authorizing careless work. They apply to decisions about methods, timing, materials and foreseeable consequences. A low fee does not excuse defective execution, and the absence of a contractual deadline does not authorize indefinite delay.
The duty to advise may require identifying an unsuitable solution and explaining a more appropriate course in light of the client's needs. It differs from transferring factual information. The extent of advice depends on the assignment and the parties' expertise. A breach of loyalty can generate damages without automatically eliminating remuneration for all properly completed work. The claimant must connect the breach to the consequence being sought.
Professional standards must be established for the relevant field and time of performance. Manufacturer instructions, recognized methods and applicable technical requirements may supply evidence. An expert should explain why a standard governed this undertaking and how the actual execution departed from it. The later appearance of a better technique does not retrospectively prove fault. Conversely, compliance with an incomplete specification does not invariably excuse a method the provider knew was unsafe or professionally unacceptable.
An (obligation de moyens) places reasonable conduct at the centre of the undertaking. The client seeking damages proves fault, injury and causation on a balance of probabilities. Failure to achieve the client's hoped-for commercial success does not alone establish professional fault. Evidence about the provider's investigation, available options, warnings and follow-up will often be more probative than the disappointing result itself.
An (obligation de résultat) attaches to a sufficiently precise promised outcome. Proof of its absence establishes the relevant failure without requiring the client to reconstruct every careless act. The client still proves the injury claimed and its causal connection. Under , mere diligence does not exonerate a provider bound to a result; (force majeure) is the express defence. requires unforeseeability and irresistibility. Ordinary commercial difficulty does not satisfy that test.
Assess each obligation separately through the contract, the task's uncertainty and the provider's control. A precise delivery obligation can coexist with an obligation of means concerning subsequent commercial benefits. Client fault, inadequate client information or interference may affect causation or responsibility when established. These possibilities do not create a general defence that the client approved the work. A provider cannot routinely disregard minimum professional standards and transfer the consequences through a warning.
Worked example: a machine and a productivity target
Factual Scenario
A manufacturer agrees to deliver a packaging machine meeting specified dimensions and an agreed throughput under defined testing conditions. Assume its design and fabrication work is not merely accessory to the value of the supplied property. It also undertakes to advise on reorganizing the client's factory.
The assumed relative value supports enterprise classification under Delivery of equipment satisfying the stated test supports an obligation of result. A promise to investigate workflow improvements, without guaranteeing savings across the entire factory, supports an obligation of means for that advisory work.
If the machine fails the agreed test, proof of diligent effort alone does not answer the claim. If the machine passes but overall productivity disappoints, identify whether the adviser failed to investigate a known bottleneck or gave unsuitable advice. The client must also disclose relevant operating constraints. An undisclosed limitation affecting the test requires factual analysis of each party's knowledge and duties; it cannot be resolved merely by calling the whole relationship “consulting.”
Information and cooperation throughout the relationship
expressly addresses useful information before conclusion, insofar as circumstances permit, about the task and the property and time required. The (obligation de renseignement) includes matters capable of influencing the decision to contract: practical limitations, foreseeable expenses, material choices and execution risks. A provider who needs facts to give reliable information must ask appropriate questions instead of treating gaps as permission to assume the cheapest conditions.
The inquiry considers the provider's actual or presumed knowledge, the information's decisive character, and the client's inability to obtain it independently or legitimate reliance on the provider. Expertise matters on both sides. A technically experienced client may be expected to understand matters that require explanation to a novice. That client can still legitimately rely on information controlled by the provider. Urgency may limit what can reasonably be determined before immediate intervention, but it does not justify knowingly misleading statements.
Information duties continue during execution through (bonne foi), cooperation and the obligations arising from the undertaking. Discovery of an obstacle affecting cost, schedule or suitability calls for timely disclosure. A final invoice is a poor substitute for a warning that would have permitted the client to select a different solution. Client requests for modifications similarly require explanation of consequences rather than silent implementation followed by unexpected charges.
The client has reciprocal duties to provide useful information, describe requirements sufficiently and cooperate with performance. Concealing known defects in supplied equipment or giving false specifications can generate responsibility or affect the provider's liability. The provider must still make inquiries and checks expected of its expertise. Neither party can automatically transfer all investigation duties to the other through a general assertion that information was available.
For a damages claim, prove the omitted information, the breach, the injury and the causal link. Explain what an informed client would have done differently and substantiate the resulting financial difference. Depending on the legal conditions established, remedies may include nullity for defective consent, reduction of obligations, damages or rejection of an additional-price claim. does not make every undisclosed detail a ground for cancelling the entire agreement.
Assistants, supplied property and loss
ordinarily permits (sous-traitance), while leaving direction and responsibility with the original provider. Exceptions arise where personal qualities determined the contract or where its nature is incompatible with third-party performance. Engaging a particular performer for a concert differs from ordering an ordinary technical service that can be performed by a competent team. Identify what the client actually contracted to receive before deciding whether a replacement is acceptable.
The original provider generally remains answerable to the client for the subcontractor's performance. Hiring a subcontractor is therefore not, by itself, a defence to a failure to achieve a promised result. The provider may have its own contractual claim against that subcontractor. The existence of separate contracts also means that the client's payment arrangements should not be assumed to govern the provider's downstream obligations automatically.
Under , the provider supplies necessary property unless the agreement limits its undertaking to labour. Supplied property must be of good quality, with the warranties applicable to a seller. Under , client-supplied property must be used carefully and its use accounted for. Manifest unsuitability, apparent defects and latent defects the provider should know require immediate notice. The required knowledge is measured against the provider's expertise, rather than impossible omniscience.
allocates loss of necessary property through superior force to the party supplying it. First establish that superior force actually caused the loss. Careless storage or misuse engages a different inquiry. Also distinguish loss of supplied property from the special rules concerning loss of a completed or unfinished work. Identifying the object that was lost and its supplier prevents an apparently simple ownership argument from obscuring the relevant obligation.
Price, estimates and accounting
permits determination by agreement, usage, law or the value of work or services. The agreement may use hourly rates, units, commissions, cost plus a percentage, a fixed amount, or different methods for separate components. Where the price must be established by value, the provider proves the reasonable value of the performance. A demand for payment does not prove itself through the amount printed on the invoice.
An estimate (estimation) engages when supplied at formation. The provider must justify an increase, and the client owes it only insofar as it results from work, services or expenses unforeseeable to the provider at that time. Distinguish a sufficiently developed estimate from a casual preliminary approximation. Neither word choice alone nor a percentage overrun supplies the legal test. There is no general automatic allowance permitting every provider to exceed an estimate by a fixed percentage.
An estimate may coexist with cost-based remuneration. Charging actual costs plus a percentage does not necessarily erase the earlier estimated total or transfer every overrun to the client. Examine whether the parties agreed to discard the estimate and allocate that risk differently. Poor planning, omitted ordinary tasks and incompetence do not become unforeseeable merely because the provider personally failed to anticipate them. Timely disclosure of an unexpected condition remains necessary.
Where remuneration follows the value of work, services or goods, gives the client a right to an account on request. The account should permit comparison of progress, services already supplied and expenditure already incurred. Keep this request-based obligation distinct from the continuing duty to disclose a newly discovered risk. Silence from the client about periodic accounting does not authorize concealment of a material overrun.
Worked example: testing an overrun
Factual Scenario
A technician gives a documented $10,000 estimate for restoring a commercial device. The final $13,000 invoice adds $1,000 for routine calibration omitted from the estimate and $2,000 for a concealed defect that a competent preliminary inspection could not reveal. Assume both amounts represent reasonable charges and the technician promptly disclosed the concealed defect before proceeding. All amounts in this and the following price example exclude taxes.
The provider must justify both additions separately. Routine calibration was foreseeable and cannot be shifted through on these facts. The concealed defect may justify the $2,000 addition if its unforeseeability and causal connection to that expense are proved. The resulting supported price would be $12,000, subject to the actual agreement and any other defence. A single explanation that “repairs took longer” would not establish this account.
Fixed price and additional work
A (contrat à forfait) allocates ordinary cost risk through The provider cannot increase the price because execution cost more or required more work; the client cannot reduce it because execution was cheaper or easier. Unless the parties agree otherwise, the fixed price remains despite changes in initially contemplated execution conditions. A provider's mistaken cost calculation therefore differs sharply from a justified increase under an estimate.
Separate three situations. First, extra effort necessary to perform the original undertaking ordinarily remains within the fixed price. Second, an agreed price-adjustment mechanism can allocate particular changes differently, subject to its conditions and notice procedure. Third, genuinely additional work outside the original express or implicit scope requires a further agreement. Labelling ordinary completion work as “extras” does not make it additional work.
The provider claiming an addition proves the original scope, the requested change, the client's agreement and the applicable price. does not itself require every modification to be written, but the contract or other evidentiary rules may make writing necessary or decisive. A contractual approval procedure should be followed. A claimed waiver of that procedure requires clear evidence; the client's observation of ongoing work is not invariably approval of an additional charge.
The client's own breach can generate damages even under a fixed price. Concealing decisive information or materially disrupting promised conditions raises responsibility questions distinct from a request to revise the price merely because performance became expensive. Similarly, defective or omitted performance can support the client's remedies despite the fixed price. The rule protects the agreed remuneration for the agreed performance; it does not certify that performance occurred.
Suppose a $24,000 fixed price includes designing and installing a control system. Ordinary integration takes $3,000 more effort than expected. The client separately approves a new reporting module for $4,000. On those assumptions, the contract price becomes $28,000, not $31,000. If the client also caused a proven interruption, assess the resulting damages separately and avoid counting the same labour both as an approved addition and as injury.
Practice Checklist
- Identify the principal undertaking, actual independence and any representative function.
- Establish the agreed scope, client inputs, exclusions and rules governing changes.
- Classify each disputed obligation and collect evidence appropriate to its intensity.
- Trace information available to each party and warnings given before additional expense.
- Distinguish an estimate from a fixed price and require support for every disputed addition.
- Reconcile invoices, supplied property and progress without duplicating the same charge.
Check your understanding
Two short exercises before you move on: reason through the lesson’s worked examples, then recall its key terms from memory.
Apply the rules
Each worked example gives the facts first and keeps its analysis closed. Decide the outcome, then open the analysis to compare.
Active recall
1 / 13Formulate your answer before revealing the definition. Your self-assessment schedules a review; it does not measure mastery.
Contract of enterprise or for services
Contrat d'entreprise ou de service
How would you define this concept? Which conditions or limits matter?
Glossary
- Contract of enterprise or for servicesContrat d'entreprise ou de service
- A remunerated undertaking to perform material or intellectual work or provide a service independently.
- Duty to informObligation de renseignement
- An obligation to disclose useful information in circumstances requiring its communication.
- EstimateEstimation
- An assessed expected price that engages the rules governing justification of an increase.
- Fixed-price contractContrat à forfait
- An agreement fixing the remuneration despite differences in the expected cost or amount of work, subject to applicable exceptions.
- Good faithBonne foi
- A standard requiring honest, reasonable conduct in forming, performing and ending obligations.
- MandateMandat
- A contract authorizing representation in performing a juridical act.
- Obligation of meansObligation de moyens
- An undertaking to use the care and reasonable methods required by the circumstances.
- Obligation of resultObligation de résultat
- An undertaking to achieve an identified outcome.
- Professional standardsRègles de l'art
- Recognized methods and requirements governing competent performance in the relevant field.
- SaleVente
- A contract transferring ownership of property for a price.
- SubcontractingSous-traitance
- Entrusting all or part of performance to another provider under a separate agreement.
- SubordinationSubordination
- A relationship in which one party directs and controls the execution of another person's work.
- Superior forceForce majeure
- An unforeseeable and irresistible event, including an external cause with those characteristics.
References and Further Reading
- Civil Code of Québec, Official consolidated text.
- JurisClasseur Québec, collection « Droit civil », Contrats nommés II, , « Nature, formation et fin du contrat d’entreprise ou de service », paras. 1–23.
- JurisClasseur Québec, collection « Droit civil », Contrats nommés II, , « Obligations des parties : dispositions générales applicables au contrat d’entreprise ou de service », paras. 1–94, particularly 19–28, 37–46 and 55–94.