Canada: Westerhoff And McCallum: More From The OCA On Expert Evidence

Last Updated: April 1 2015
Article by Christina Porretta

The Ontario Court of Appeal released its decision last week in Westerhof v. Gee Estate and McCallum v. Baker (2015 ONCA 206), which are the companion cases to Moore v. Getahun.  All three appeals were heard together.

The legal issue before the Court in Westerhof   and McCallum was whether participant experts and non-party experts could give opinion evidence without having to comply with Rule 53.03, which describes the deadlines and content requirements for expert reports.

The Court of Appeal held that the Divisional Court erred in concluding that the type of evidence – whether fact or opinion – is the key factor in determining to whom Rule 53.03 applies.

Rather, the Court of Appeal was unanimous in that participant experts and non-party experts may give opinion evidence without complying with Rule 53.03.  As a result, Rule 53.03 does not apply to the opinion evidence of a non-party expert or participant expert where he or she has formed a relevant opinion based on personal observations or examinations relating to the subject matter of the litigation for a purpose other than the litigation.

Background

At the trial of Mr. Westerhof, the plaintiff proposed to call evidence from nine medical witnesses.  From the outset, the trial judge ruled that the medical witnesses who treated or assessed the plaintiff but did not comply with Rule 53.03 would not be entitled to give opinion evidence concerning their diagnosis or prognosis, even though they had not been retained for the purpose of the litigation. Those witnesses were also prevented from giving evidence of the history they had taken from Westerhof. The Divisional Court upheld the trial judge's conclusion.  The Court of Appeal did not agree and reversed the decision, ordering a new trial.

At the trial of Mr. McCallum, the defendant appealed that decision on the basis, inter alia, that the trial judge erred by allowing treating medical practitioners who had not complied with Rule 53.03 to give "an avalanche" of opinion evidence.  The Court of Appeal dismissed this appeal.

Principles set out by the Court of Appeal

Simmons J.A., writing on behalf of the Court of Appeal, concluded that a witness with special skill, knowledge, training or experience who has not been engaged by or on behalf of a party to the litigation may give opinion evidence for the truth of its contents without complying with Rule 53.03 where:

  • The opinion to be given is based on the witness's observation of or participation in the events at issue; and
  • The witness formed the opinion to be given as part of the ordinary exercise of his or her skill, knowledge, training and experience while observing or participating in such events.

The Court also tried to clear the confusion that often arises from referring to these witnesses as "fact witnesses" because their evidence is derived from their observations of or involvement in the underlying facts.  Simmons J.A. preferred to refer to these witnesses as "participant experts," which takes into account that in addition to providing evidence relating to their observations of the underlying facts, they may also give opinion evidence admissible for its truth.  As with all evidence, and especially opinion evidence, the Court reiterated that it retains its gatekeeper function in relation to opinion evidence from participant experts and non-party experts.

Six factors were cited by the Court as reasons why the Divisional Court erred:

  1. The Divisional Court failed to refer to a single case under the pre-2010 jurisprudence, which support the conclusion that Rule 53.03 does not apply to opinion evidence given by participant experts. The Court reiterated its view in Moore that "the 2010 amendments to rule 53.03 did not create new duties but rather codified and reinforced ... basic common law principles."  The Court found no basis for the Divisional Court to conclude that the pre-2010 jurisprudence did not continue to apply following the 2010 amendments to the Rules relating to expert witnesses.
  2. Apart from Westerhof, no cases were brought to the Court's attention that support the view that participant experts are obliged to comply with Rule 53.03 when giving evidence concerning treatment opinions.
  3. There was nothing in Justice Osborne's Report on the Civil Justice Reform Project that indicated an intention to address participant experts or non-party experts; rather, the focus was litigation experts – expert witnesses engaged by or on behalf of a party to provide opinion evidence in relation to a proceeding.
  4. The use of the words "expert engaged by or on behalf of a party to provide [opinion] evidence in relation to a proceeding" in Rule 4.1.01 and Form 53 makes it clear that an expert must be "engaged by or on behalf of a party to provide [opinion] evidence in relation to the proceeding before the rule applies.  The Court concluded that witnesses, albeit ones with expertise, testifying to opinions formed during their involved in a matter, do not come within this description.  They are not engaged by a party to form their opinions, and they do not form their opinions for the purpose of the litigation.
  5. The Court was not persuaded that disclosure problems exist in relation to the opinions of participant experts and non-party experts requiring that they comply with Rule 53.03.  Quite often, these experts will have prepared documents summarizing their opinions about the matter contemporaneously with their involved, which can be obtained as part of the discovery process.  In addition, it is open to a party to seek disclosure of any opinions, notes or records of participant experts and non-party experts the opposing party intends to rely on at trial.
  6. Requiring participant witnesses and non-party experts to comply with Rule 53.03 can only add to the cost of the litigation, create the possibility of delay because of potential difficulties in obtaining Rule 53.03 compliant reports, and add unnecessarily to the workload of persons not expected to have to write Rule 53.03 compliant reports.

For more information, visit our Canadian Tax Litigation blog at www.canadiantaxlitigation.com

About Dentons

Dentons is a global firm driven to provide you with the competitive edge in an increasingly complex and interconnected marketplace. We were formed by the March 2013 combination of international law firm Salans LLP, Canadian law firm Fraser Milner Casgrain LLP (FMC) and international law firm SNR Denton.

Dentons is built on the solid foundations of three highly regarded law firms. Each built its outstanding reputation and valued clientele by responding to the local, regional and national needs of a broad spectrum of clients of all sizes – individuals; entrepreneurs; small businesses and start-ups; local, regional and national governments and government agencies; and mid-sized and larger private and public corporations, including international and global entities.

Now clients benefit from more than 2,500 lawyers and professionals in 79 locations in 52 countries across Africa, Asia Pacific, Canada, Central Asia, Europe, the Middle East, Russia and the CIS, the UK and the US who are committed to challenging the status quo to offer creative, actionable business and legal solutions.

Learn more at www.dentons.com

The content of this article is intended to provide a general guide to the subject matter. Specialist advice should be sought about your specific circumstances. Specific Questions relating to this article should be addressed directly to the author.

To print this article, all you need is to be registered on Mondaq.com.

Click to Login as an existing user or Register so you can print this article.

Authors
Events from this Firm
23 Oct 2018, Other, Toronto, Canada

Dentons and SheEO are coming together for an evening of #radicalgenerosity on October 23, 2017. Meet Vicki Saunders, Founder of SheEO, and learn about how SheEO is changing the landscape for female entrepreneurs.

23 Oct 2018, Seminar, Montreal, Canada

Dentons is pleased to invite you to join us for a breakfast seminar as part of the Les Matinées Dentons series on issues relevant to you and your business.

24 Oct 2018, Other, Toronto, Canada

If you build it, claims may come. Join the Dentons Construction group for breakfast and an informative discussion on current topics in construction law.

Similar Articles
Relevancy Powered by MondaqAI
Rogers Partners LLP
 
In association with
Related Topics
 
Similar Articles
Relevancy Powered by MondaqAI
Rogers Partners LLP
Related Articles
 
Related Video
Up-coming Events Search
Tools
Print
Font Size:
Translation
Channels
Mondaq on Twitter
 
Register for Access and our Free Biweekly Alert for
This service is completely free. Access 250,000 archived articles from 100+ countries and get a personalised email twice a week covering developments (and yes, our lawyers like to think you’ve read our Disclaimer).
 
Email Address
Company Name
Password
Confirm Password
Position
Mondaq Topics -- Select your Interests
 Accounting
 Anti-trust
 Commercial
 Compliance
 Consumer
 Criminal
 Employment
 Energy
 Environment
 Family
 Finance
 Government
 Healthcare
 Immigration
 Insolvency
 Insurance
 International
 IP
 Law Performance
 Law Practice
 Litigation
 Media & IT
 Privacy
 Real Estate
 Strategy
 Tax
 Technology
 Transport
 Wealth Mgt
Regions
Africa
Asia
Asia Pacific
Australasia
Canada
Caribbean
Europe
European Union
Latin America
Middle East
U.K.
United States
Worldwide Updates
Registration (you must scroll down to set your data preferences)

Mondaq Ltd requires you to register and provide information that personally identifies you, including your content preferences, for three primary purposes (full details of Mondaq’s use of your personal data can be found in our Privacy and Cookies Notice):

  • To allow you to personalize the Mondaq websites you are visiting to show content ("Content") relevant to your interests.
  • To enable features such as password reminder, news alerts, email a colleague, and linking from Mondaq (and its affiliate sites) to your website.
  • To produce demographic feedback for our content providers ("Contributors") who contribute Content for free for your use.

Mondaq hopes that our registered users will support us in maintaining our free to view business model by consenting to our use of your personal data as described below.

Mondaq has a "free to view" business model. Our services are paid for by Contributors in exchange for Mondaq providing them with access to information about who accesses their content. Once personal data is transferred to our Contributors they become a data controller of this personal data. They use it to measure the response that their articles are receiving, as a form of market research. They may also use it to provide Mondaq users with information about their products and services.

Details of each Contributor to which your personal data will be transferred is clearly stated within the Content that you access. For full details of how this Contributor will use your personal data, you should review the Contributor’s own Privacy Notice.

Please indicate your preference below:

Yes, I am happy to support Mondaq in maintaining its free to view business model by agreeing to allow Mondaq to share my personal data with Contributors whose Content I access
No, I do not want Mondaq to share my personal data with Contributors

Also please let us know whether you are happy to receive communications promoting products and services offered by Mondaq:

Yes, I am happy to received promotional communications from Mondaq
No, please do not send me promotional communications from Mondaq
Terms & Conditions

Mondaq.com (the Website) is owned and managed by Mondaq Ltd (Mondaq). Mondaq grants you a non-exclusive, revocable licence to access the Website and associated services, such as the Mondaq News Alerts (Services), subject to and in consideration of your compliance with the following terms and conditions of use (Terms). Your use of the Website and/or Services constitutes your agreement to the Terms. Mondaq may terminate your use of the Website and Services if you are in breach of these Terms or if Mondaq decides to terminate the licence granted hereunder for any reason whatsoever.

Use of www.mondaq.com

To Use Mondaq.com you must be: eighteen (18) years old or over; legally capable of entering into binding contracts; and not in any way prohibited by the applicable law to enter into these Terms in the jurisdiction which you are currently located.

You may use the Website as an unregistered user, however, you are required to register as a user if you wish to read the full text of the Content or to receive the Services.

You may not modify, publish, transmit, transfer or sell, reproduce, create derivative works from, distribute, perform, link, display, or in any way exploit any of the Content, in whole or in part, except as expressly permitted in these Terms or with the prior written consent of Mondaq. You may not use electronic or other means to extract details or information from the Content. Nor shall you extract information about users or Contributors in order to offer them any services or products.

In your use of the Website and/or Services you shall: comply with all applicable laws, regulations, directives and legislations which apply to your Use of the Website and/or Services in whatever country you are physically located including without limitation any and all consumer law, export control laws and regulations; provide to us true, correct and accurate information and promptly inform us in the event that any information that you have provided to us changes or becomes inaccurate; notify Mondaq immediately of any circumstances where you have reason to believe that any Intellectual Property Rights or any other rights of any third party may have been infringed; co-operate with reasonable security or other checks or requests for information made by Mondaq from time to time; and at all times be fully liable for the breach of any of these Terms by a third party using your login details to access the Website and/or Services

however, you shall not: do anything likely to impair, interfere with or damage or cause harm or distress to any persons, or the network; do anything that will infringe any Intellectual Property Rights or other rights of Mondaq or any third party; or use the Website, Services and/or Content otherwise than in accordance with these Terms; use any trade marks or service marks of Mondaq or the Contributors, or do anything which may be seen to take unfair advantage of the reputation and goodwill of Mondaq or the Contributors, or the Website, Services and/or Content.

Mondaq reserves the right, in its sole discretion, to take any action that it deems necessary and appropriate in the event it considers that there is a breach or threatened breach of the Terms.

Mondaq’s Rights and Obligations

Unless otherwise expressly set out to the contrary, nothing in these Terms shall serve to transfer from Mondaq to you, any Intellectual Property Rights owned by and/or licensed to Mondaq and all rights, title and interest in and to such Intellectual Property Rights will remain exclusively with Mondaq and/or its licensors.

Mondaq shall use its reasonable endeavours to make the Website and Services available to you at all times, but we cannot guarantee an uninterrupted and fault free service.

Mondaq reserves the right to make changes to the services and/or the Website or part thereof, from time to time, and we may add, remove, modify and/or vary any elements of features and functionalities of the Website or the services.

Mondaq also reserves the right from time to time to monitor your Use of the Website and/or services.

Disclaimer

The Content is general information only. It is not intended to constitute legal advice or seek to be the complete and comprehensive statement of the law, nor is it intended to address your specific requirements or provide advice on which reliance should be placed. Mondaq and/or its Contributors and other suppliers make no representations about the suitability of the information contained in the Content for any purpose. All Content provided "as is" without warranty of any kind. Mondaq and/or its Contributors and other suppliers hereby exclude and disclaim all representations, warranties or guarantees with regard to the Content, including all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement. To the maximum extent permitted by law, Mondaq expressly excludes all representations, warranties, obligations, and liabilities arising out of or in connection with all Content. In no event shall Mondaq and/or its respective suppliers be liable for any special, indirect or consequential damages or any damages whatsoever resulting from loss of use, data or profits, whether in an action of contract, negligence or other tortious action, arising out of or in connection with the use of the Content or performance of Mondaq’s Services.

General

Mondaq may alter or amend these Terms by amending them on the Website. By continuing to Use the Services and/or the Website after such amendment, you will be deemed to have accepted any amendment to these Terms.

These Terms shall be governed by and construed in accordance with the laws of England and Wales and you irrevocably submit to the exclusive jurisdiction of the courts of England and Wales to settle any dispute which may arise out of or in connection with these Terms. If you live outside the United Kingdom, English law shall apply only to the extent that English law shall not deprive you of any legal protection accorded in accordance with the law of the place where you are habitually resident ("Local Law"). In the event English law deprives you of any legal protection which is accorded to you under Local Law, then these terms shall be governed by Local Law and any dispute or claim arising out of or in connection with these Terms shall be subject to the non-exclusive jurisdiction of the courts where you are habitually resident.

You may print and keep a copy of these Terms, which form the entire agreement between you and Mondaq and supersede any other communications or advertising in respect of the Service and/or the Website.

No delay in exercising or non-exercise by you and/or Mondaq of any of its rights under or in connection with these Terms shall operate as a waiver or release of each of your or Mondaq’s right. Rather, any such waiver or release must be specifically granted in writing signed by the party granting it.

If any part of these Terms is held unenforceable, that part shall be enforced to the maximum extent permissible so as to give effect to the intent of the parties, and the Terms shall continue in full force and effect.

Mondaq shall not incur any liability to you on account of any loss or damage resulting from any delay or failure to perform all or any part of these Terms if such delay or failure is caused, in whole or in part, by events, occurrences, or causes beyond the control of Mondaq. Such events, occurrences or causes will include, without limitation, acts of God, strikes, lockouts, server and network failure, riots, acts of war, earthquakes, fire and explosions.

By clicking Register you state you have read and agree to our Terms and Conditions