Witness Testimony

Overview

A person who watched a visitor fall, an employee who received a complaint and an engineer who inspected the floor may all contribute evidence. Their permissible contributions differ. The first can describe the fall; the second can establish that a warning was received; the third may explain a technical mechanism if the requirements for expert evidence are met.

Testimony (témoignage) under art. 2843 CCQ covers the narration of facts within personal knowledge (connaissance personnelle) and the opinion of an expert. The requirement of a deposition in the proceeding has exceptions, but changing the medium does not remove the substantive limits. A signed statement, recording or expert report must enter through the rule applicable to its function.

Hearsay (ouï-dire) becomes relevant as soon as a witness repeats another person's account to establish its truth. A witness who heard a warning has personal knowledge that the warning was given; that alone does not establish that the danger described actually existed. The lesson on out-of-court statements supplies the detailed routes for receiving such accounts.

Learning Objectives

• Distinguish ordinary testimony, permissible factual impressions and expert opinion.
• Apply the separate rules governing competence, compulsory attendance and protected communications.
• Assess admissibility and weight, including prior statements, expert reports and their factual foundations.

Identify what the witness can establish

The ordinary witness normally describes what they observed, experienced or heard directly. When observation and inference can be separated, the witness should supply the observations and leave the conclusion to the court. Asking whether a floor was wet produces a different kind of answer from asking whether its owner committed a legal fault.

Some everyday impressions cannot conveniently be reduced to a list of sensory details. A witness may describe apparent intoxication, emotion, age, speed, distance or the deteriorated condition of an object when the impression concisely expresses personal observations and requires no special expertise. Establish the basis: the person's movement, speech, proximity, lighting and period of observation. Familiarity with an industry can also support a factual description of its practices. It does not authorize the witness to decide a legal question.

A business owner with direct knowledge of costs and revenues may explain the components of a claimed loss. The title of accountant, mechanic or insurance adjuster does not by itself settle whether an answer is ordinary testimony or specialized opinion. Classify the particular answer and the knowledge needed to understand it.

Admissibility (recevabilité) must be assessed for the proposed use. Testimony about a juridical act (acte juridique) remains subject to the rules on proving agreements and contradicting written terms, including arts. 2862 and 2863 CCQ. A credible participant cannot bypass those limits simply because they remember the discussion clearly. See proof of a juridical act and contradicting a written act.

Worked application: three accounts of a fall

Factual Scenario

The following facts are hypothetical. Camille sees a visitor's foot slide across a dark patch and sees water on the floor immediately afterward.

Competence and the form of the deposition

Competence to testify (aptitude à témoigner) is presumed under art. 276 CCP. The inquiry concerns the ability to perceive, remember and communicate facts. A diagnosis, disability or admission to psychiatric care does not automatically establish incompetence. General ability to remember must also be distinguished from actual recollection of the event, which affects the usefulness and reliability of the particular account.

A communication difficulty calls for examination of appropriate assistance. Written communication or interpretation may help the person communicate their own account. Article 296 CCP permits remote examination or a commissioner where illness or disability prevents attendance, and also to avoid unnecessary travel from a remote location. Adaptation should enable the person's own evidence to be understood. It must not replace their account with another person's interpretation of what happened.

An ordinary witness must take the oath to tell the truth before giving evidence, subject to the applicable exceptions, under art. 277 CCP. A persistent refusal constitutes contempt. In a contested proceeding, examination ordinarily takes place at the hearing with the other parties present or duly called, under art. 279 CCP. Permitted examinations before trial, examinations outside the court's presence and remote testimony follow their own conditions. A video connection changes the method of attendance; it does not remove the oath or the opportunity for questioning.

Children and the applicable statutory regime

Under art. 2844 CCQ, a child's lack of understanding of the oath does not necessarily prevent testimony. The court may admit the child if sufficiently mature to relate the facts within their knowledge and if the child understands the duty to tell the truth. A judgment cannot rest on that unsworn testimony alone. Corroboration (corroboration) is additional supporting evidence; repeating the child's account through several adults does not automatically provide independent confirmation of the underlying event.

The federal and youth-protection regimes must be kept separate. Where the Canada Evidence Act applies, s. 16.1 presumes a child under fourteen competent, requires the ability to understand and answer questions and uses a promise to tell the truth instead of an oath. A challenger must first establish grounds for an inquiry. Questions testing the child's understanding of the nature of that promise are prohibited. The evidence has the same effect as sworn evidence, without a special corroboration requirement. Section 16 separately governs persons fourteen or older whose mental capacity is challenged, including evidence on a promise where they can communicate but do not understand an oath. Canada Evidence Act, ss. 2, 6, 16 and 16.1.

Section 85.1 of the Youth Protection Act provides its own regime for children under fourteen, including presumed competence, a promise to tell the truth and no corroboration requirement. A finding of incompetence prevents testimony under that provision; an out-of-court statement may nevertheless be considered under the distinct conditions of s. 85.5. Do not transfer this statutory exception into an ordinary civil action. The court must also assess children's accounts with regard to their development, rather than assuming that differences from adult narration demonstrate unreliability.

Compulsory attendance and witness protection

Compellability (contraignabilité) generally follows competence: art. 276 CCP permits a competent person to be required to testify, while art. 270 CCP also governs calling a witness to produce a document or other evidence. The subpoena must identify the required evidence sufficiently precisely to allow its relevance to be assessed. Article 269 CCP ordinarily requires service at least ten days before attendance, subject to an authorized shorter period in urgent circumstances that cannot be less than twenty-four hours. Applicable expense advances and compensation are addressed by art. 273 CCP. A person already at the hearing may also be required to testify under art. 272 CCP.

The calling party must explain the reason for attendance, the subject of the testimony and the course of the proceeding, and promptly notify the witness if attendance is no longer required, under art. 21 CCP. A subpoena should not demand an unexplained mass of records on an impracticable timetable. An unjustified failure to attend can lead to the measures under art. 274 CCP; refusal to testify can engage contempt. These consequences do not dispense with valid service or the witness's protections.

Professional secrecy (secret professionnel) and other protected communications limit what may be compelled. A generally competent witness can properly resist disclosure of a particular protected communication. An expert's appointment does not automatically waive a client's confidentiality. Determine the protection, its holder, any waiver and applicable exceptions before asking for the substance of advice. The lesson on privileged communications distinguishes professional secrecy, litigation privilege and settlement protection.

Other specific restrictions matter. Article 270 CCP prevents calling a bailiff to testify about facts or admissions learned in the course of notifying a pleading. A person cited for contempt cannot be compelled to testify in that proceeding under art. 61 CCP. Fear that an answer may incriminate the witness is governed by the distinct protection in art. 285 CCP: the witness cannot refuse for that reason, and the answer cannot be used against them except in proceedings for perjury or contradictory testimony. Its scope should not be confused with the differently framed federal protection in s. 5 of the Canada Evidence Act.

Witnesses must be protected from intimidation and abusive questioning under art. 278 CCP. Where that article's conditions concerning family violence, including spousal violence, or sexual violence apply, the court may prevent personal examination or cross-examination by an unrepresented party. If it does, it orders that a lawyer be designated to conduct the questioning. Child-specific assistance and protective arrangements should be considered before the hearing. A right to test evidence is exercised through legally permitted questioning.

Determine the weight of an ordinary account

Probative weight (force probante) is left to the court by art. 2845 CCQ. Relevant considerations include opportunity to observe, memory, accuracy of expression, internal coherence, consistency with documents, possible interest in the result and explanations for discrepancies. Apparent sincerity is only one consideration. A confident witness may be mistaken; a nervous witness may be accurate.

Under art. 2844 CCQ, one witness can establish a fact. Ordinary civil testimony does not generally require corroboration, and a party's interest does not automatically disqualify their account. Conversely, an uncontradicted account does not bind the judge. The court evaluates it against all the evidence. Several repetitions of the same original account should not be mistaken for several independent observations.

A prior inconsistent statement (déclaration antérieure incompatible) requires careful handling. Under art. 281 CCP, a party may contradict its own witness's testimony or, with leave and after questioning the witness on the subject, establish an inconsistent earlier statement. Challenging the present account does not automatically prove the earlier version true. Article 2871 CCQ separately permits a witness's reliable prior statement about facts on which they can legally testify to be received as testimony. The witness should have an opportunity to explain the circumstances and the difference.

The judge may accept the present version, accept an admissible earlier version or reject both on the disputed point. Minor differences about peripheral details have a different significance from repeated incompatible accounts of the central event. Memory aids raise a related fairness issue: using notes to refresh recollection can expose relevant factual portions to production and questioning. Protected comments and material require a separate assessment; privilege should not be treated as blanket protection for everything used during testimony.

An extrajudicial admission (aveu extrajudiciaire) is another distinct possibility when the opposing party acknowledges an adverse fact. The legal consequence comes from the acknowledgment and its proper proof, not merely from the speaker being a witness. See admissions. Appeals generally defer to factual assessments of testimony unless a palpable and overriding error is shown; a different preferred reading of the transcript is insufficient.

Admit expert opinion for its proper purpose

Expert evidence (preuve par expert) assists the court on technical, scientific or specialized matters beyond ordinary judicial knowledge. Its admissibility requires relevance, necessity in assisting the trier of fact, sufficient qualification and the absence of an exclusionary rule. The framework developed in R. c. Mohan, [1994] 2 R.C.S. 9, and the independence analysis in White Burgess Langille Inman c. Abbott and Haliburton Co., 2015 CSC 23, operate with Quebec's procedural provisions.

Necessity is assessed against the actual issue and the available evidence. An explanation that is merely useful may add little where ordinary observations already allow the court to decide. Costs, delay, confusion and the risk that technical presentation will overwhelm critical evaluation also matter. Domestic law remains for the court to determine. An expert cannot acquire authority to decide legal liability by including that conclusion in a technical report.

Qualification concerns the particular question. Specialized practical experience can suffice without a matching academic title; general credentials do not establish expertise in every neighbouring field. A treating professional or employee is not automatically excluded because of the relationship. The decisive preliminary issue is whether the person can and will provide fair, objective and impartial assistance. A demonstrated inability can prevent admission; lesser concerns may affect weight. Article 22 CCP makes that duty to the court paramount throughout the mandate.

An expert may explain psychological or communication issues relevant to assessing evidence when specialized assistance is necessary. The expert cannot simply certify that another witness tells the truth. Similarly, an opinion touching an ultimate factual issue requires careful scrutiny of necessity and scope; its proximity to the final issue does not substitute for applying the admissibility criteria. Polygraph material presents particular reliability and judicial-function concerns and cannot be assumed admissible because a trained operator produced it.

Reports, objections and examination

The expert can be retained by one party, jointly chosen or appointed by the court. The procedural framework favours consideration of joint expertise and requires attention to proportionality. The powers of a court-appointed expert under art. 236 CCP should not be attributed automatically to every privately retained expert.

Under arts. 235 and 238 CCP, the expert must disclose the relevant qualifications and instructions on request, comply with the declaration concerning the expert's duties, and give a sufficiently detailed and reasoned report. Readers must be able to identify the observations, assumptions, method, sources and steps leading to the conclusion. A technical conclusion unsupported by an intelligible method leaves the court unable to assess it independently.

Known objections based on irregularity, serious error or bias belong before trial through art. 241 CCP, which specifies ten days from knowledge of the ground. Qualification and scope should therefore be addressed early. Article 294 CCP reserves challenges during trial for circumstances including grounds that could not previously have been discovered despite diligence.

The report stands as the expert's testimony under art. 293 CCP, subject to communication and filing requirements and the court's power concerning late receipt. Oral repetition of the whole report is not the default. Article 294 CCP allows clarification and opinion on new matters disclosed at trial, requires authorization for other examination purposes and allows cross-examination of another party's expert. These mechanisms preserve testing of the opinion without treating every filed document bearing an expert's name as admissible evidence.

Assess the opinion and its factual foundation

The court is generally not bound by an expert's conclusion. Article 238 CCP makes an exception where the parties declare that they accept the conclusions; the court must still attend to any affected third-party rights. It examines the relevant competence, personal investigations, methodology, completeness, treatment of contrary information and connection between proved facts and inference. Where experts disagree, the court must assess their competing reasoning; disagreement alone does not decide the case against the party bearing the burden. Rejection of a sole, uncontradicted expert requires serious reasons.

Experts often rely on accounts supplied by clients, employees or medical records. Those accounts can explain the basis of the opinion without proving their own truth. The material factual foundation must be established through admissible evidence; the absence of such proof can deprive the opinion of weight. The law does not require mechanical proof of every background detail, but central assumptions cannot become established facts merely through repetition in the report.

Indigenous oral traditions require context-sensitive application of evidentiary rules when Indigenous rights are in issue. Flexibility should permit the court to engage meaningfully with oral history and historical context while still assessing its persuasive value. Ordinary assumptions about the availability of written records should not predetermine that assessment.

Worked application: the engineer and the missing witness

Factual Scenario

The following facts are hypothetical. An engineer measures the floor's slope and tests a surface sample. The engineer also assumes that water remained there for an hour because an absent employee said so.

Practice Checklist

• Identify the precise fact and proposed use of each answer or recorded statement.
• Separate personal observation, everyday impression, repeated account and specialized opinion.
• Confirm competence, the applicable child or federal regime, oath and permitted mode of testimony.
• Arrange valid attendance, expenses, information, interpretation and protective measures.
• Resolve protected communications and limitations on testimonial proof before eliciting the evidence.
• Distinguish impeachment by a prior statement from admitting its contents for their truth.
• Address expert qualifications, scope, report communication and known objections before trial.
• Prove the opinion's material factual assumptions and assess its weight against the entire record.