Marie-Eve Jean Photo
Marie-Eve Jean Photo
Marie-Eve Jean Photo

Marie-Eve Jean is a talented bilingual litigation and dispute lawyer with particular expertise in construction, commercial and employment disputes. Marie-Eve has considerable experience in representing both Canadian and multinational businesses in a broad range of complex, multi-faceted disputes and proceedings, including jurisdictional challenges and complex contractual disputes. She has represented clients in matters before all levels of court in Ontario, including the Ontario Court of Appeal.

As part of her construction practice, Marie-Eve has acted on behalf of owners, general contractors, subcontractors, engineers and consultants in disputes concerning cost overruns, interference, extras, delays and acceleration, negligence, scope of work changes, liens and other construction impact claims in litigation, adjudication (under the Construction Act), mediation and arbitration.

In her employment practice, Marie-Eve assists businesses to resolve a wide array of workplace disputes. Marie-Eve frequently works with organizations in a variety of sectors, including aviation, sales and marketing, infrastructure and telecommunications. She has been recognized as “One to Watch” in the 2024 edition of Best Lawyers.

 



Representative Matters

  • Counsel to Rogers in a contractual dispute before the Ontario Superior Court of Justice and Ontario Court of Appeal: 2021 ONCA 876, Segura Mosquera v Rogers Communications Inc.
  • Successfully conducted a three-day focused hearing regarding the enforceability of Quebec marriage instruments in Ontario and successfully argued against the appeal of the Ontario Superior Court’s decision: 2023 ONCA 580, Torgersrud v Lightstone
  • Conducted a two-day trial involving four direct examinations and three cross-examinations (successful on all grounds)
  • Lead counsel in defending a motion to dismiss an action on the basis that the Court lacked jurisdiction over the subject matter of the action or, in the alternative, that Ontario was not a convenient forum for the determination of the dispute
  • Prepared several Applications for Leave to Appeal to the Supreme Court of Canada
  • Successfully resolved a global SaaS company’s claim against a managing general underwriter in respect of outstanding payments related to the supply of software services
  • Represented Canada’s largest and longest-standing equipment financing company in the enforcement of its leases
  • Represented a global manufacturer in relation to a claim for improper delivery of goods

Arbitration

  • Represented a multinational energy and infrastructure entity in a complex arbitration relating to the construction of a major infrastructure project outside of Ontario
  • Participated in the settlement of a complex arbitration relating to the construction of a major infrastructure project outside of Ontario

Speaking Engagements

Complex Arbitrations: How Clerks Can Play a Massive Role in a Successful Arbitration, The Institute of Law Clerks of Ontario Annual Conference

November 1, 2023

Implementing Demanding New Harassment and Violence Prevention Regulations. What Should You, the Employer, Have Completed by Now? at Preparing for Further Changes to the Canada Labour Code, Virtual conference, Co-speaker with Kyle Lambert

March 16, 2021

News


Rankings & Recognitions

  • Recognized by Best Lawyers in Canada (2025) as “One to Watch” in the area of Labour and Employment Law
  • Recognized by Best Lawyers in Canada (2024) as a “One to Watch” in the area of Labour and Employment Law

Community Involvement

  • Canadian Association of LGBTQ2S+ Lawyers (CALL) – Vice-President
  • Club le Grand V
  • Comité exécutif des Philanthropes du premier acte, Théâtre du Rideau Vert – Director

Directorships & Affiliations

  • Canadian Association of LGBTQ2S+ Lawyers (CALL) – Board Member

Education & Admissions

2019
Called to the Ontario Bar
2018
JD/LLLUniversity of Ottawa
2015
B.Sc. in Business Administration University of New Hampshire

Publications

  • “Ontario Superior Court of Justice Opines on Federal Termination Obligations,” LexisNexis Labour Notes® (January 15, 2021)
  • “Ontario Court of Appeal Comments on Service and Notice Calculation in the Context of an Asset Purchase Transaction,” Employment and Labour Law Reporter (September 2020)

Insights (25 Posts)View More

Featured Insight

McMillan’s Annual Privacy, Data Protection and Cybersecurity Client Seminar

Join McMillan's Privacy & Data Protection Group on Tuesday, October 17th for an overview of recent significant decisions and regulatory guidance.

Details
Tuesday, October 17, 2023
Featured Insight

McMillan’s Annual Privacy, Data Protection and Cybersecurity Client Seminar

Join McMillan's Privacy & Data Protection Group on Wednesday, December 7th for an overview of recent significant legal developments, tips on complying with new and forthcoming obligations under Quebec’s Bill 64, and discussions about hot topics in data management.

Details
Wednesday, December 7, 2022
Featured Insight

Act 25 and Confidentiality Incidents – The first Draft Regulations… remain a draft!

Draft regulation under Act 25 regarding protection of personal information, confidentiality incidents and register of confidential incidents are not in force.

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Nov 15, 2022
Featured Insight

Part 3 | Privacy 101 – Obligations Under Québec’s New Act 25: How to ensure your business’ biometric data complies with the law

If you do business in Québec, even though you are outside the province, this podcast explains why its new Act 25, in force on September 22, 2022, affects your operations. Discover your responsibilities surrounding biometric data and disclosure obligations to the Québec privacy regulator.

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Sep 15, 2022
Featured Insight

Part 2 | Privacy 101 – Obligations Under Québec’s New Act 25: Why you must now record and report privacy violations

If you do business in Québec, even though you are outside the province, this podcast explains why its new Act 25, in force on September 22, 2022, affects your operations. Discover why your business needs to develop, implement and maintain a register of confidentiality incidents and what your reporting obligations responsibilities are surrounding breach reporting.

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Sep 15, 2022
Featured Insight

Part 1 | Privacy 101 – Obligations Under Québec’s New Act 25: Why your business needs a privacy officer now

If you do business in Québec, even though you are outside the province, this podcast explains why its new Act 25, in force on September 22, 2022, affects your operations. Learn why you need a privacy officer, how to properly delegate this role, and what can happen if you don’t comply.

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Sep 15, 2022
Featured Insight

Act 25 – First Draft Regulation, On Your Marks, Get Set, Go!

First draft regulation under Act 25 regarding the protection of personal information and confidentiality incidents.

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Jul 27, 2022
Featured Insight

Legislative Amendments Affecting Québec’s Employers

The webinar discusses the rigorous language obligations imposed by Bill 96 on businesses and its significant impact on employers, as well as the recent significant changes to both Québec’s occupational health and safety legislation and Québec’s privacy legislation which employers should be aware of.

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Wednesday, June 29, 2022
Featured Insight

Taking Control: Proactive Data Breach Preparedness and Responsible Incident Management

Join us on Tuesday, June 21st as members of our Privacy and Technology Groups discuss how your organization can proactively prepare in order to be in control if and when an incident occurs and to take measured and responsible steps to prevent and manage the associated legal and business risks.

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Tuesday, June 21, 2022
Featured Insight

Deciphering the Right to Disconnect: What does this mean for Ontario, and what could happen in other provinces?

The Ontario government passed legislation containing the “right to disconnect”. Or did they? (they didn’t). But Ontario employers with 25 or more employees have to have a policy on the right to disconnect as of June 2. How should employers approach the policy, manage employee expectations and is the rest of Canada looking to follow suit?

Join McMillan’s Employment & Labour Relations Group as we discuss the requirements of the legislation, considerations in drafting the policy and impacts for employers across the country.

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Tuesday, April 19, 2022
Featured Insight

Data Collection and Protection in the Automotive Sector

Join us on Thursday, April 28, 2022 as members of McMillan's Privacy & Data Protection Group discuss privacy and data protection issues relevant to the automotive industry.

Details
Thursday, April 28, 2022
Featured Insight

Learning to Live with COVID-19: Ontario Releases Amendments Setting Out New Requirements as of January 31, 2022

The Government of Ontario has released the latest amendments to O. Reg 364/20, setting out new requirements for employers as of January 31, 2022.

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Jan 28, 2022
Featured Insight

Does the New Omicron Variant Have You Rethinking Your Return To Office Policies?

Many companies have put forth plans for a gradual re-entry into the office, however current circumstances are proving to be a challenge in this evolving landscape.

Join McMillan’s Employment and Labour experts on Tuesday, January 11th, for a panel discussion as they address your questions and concerns about policies, protocols, obligations and other considerations as you evaluate your RTO strategy.

Details
Tuesday, January 11, 2022
Featured Insight

Bill 64: A Checklist to Help Businesses Comply with Modern Privacy Requirements in Québec

The new changes to Quebec's privacy legislation usher in the modern era of privacy laws. This checklist establishes priorities and timelines for companies.

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Dec 1, 2021
Featured Insight

McMillan’s Annual Privacy, Data Protection and Cybersecurity Webinar

Our lawyers will provide an overview of important case law developments, regulatory guidance, upcoming statutory changes, and hot topics in Privacy, Data Protection & Cybersecurity

Details
Wednesday, November 10, 2021
Featured Insight

Addressing Unique Challenges Faced by Federally Regulated Employers

Federally regulated employers have had to adapt to a number of legal changes and challenges in recent years. This virtual workshop will focus on how to address some of the unique challenges faced by federally regulated employers.

Details
Tuesday, November 2, 2021
Featured Insight

Closing the Gap: New Proactive Pay Equity Rules for Federally Regulated Employers

Guidance on employers' obligations under the new federal Pay Equity Act and its associated regulations, expected to take effect in late 2021.

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Apr 27, 2021
Featured Insight

Ontario Court of Appeal Reviews Necessary Elements to Claim Against Corporate Directors in the Context of a Wrongful Termination Action

Guidance on the various circumstances in which corporate directors can become personally liable for unpaid wages and vacation pay in wrongful dismissal cases.

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Mar 9, 2021
Featured Insight

Ontario Superior Court of Justice Opines on Federal Termination Obligations

Review of a federal employer's obligations when terminating an employee under the Canada Labour Code and how
to enforce contractual termination clauses.

Read More
Dec 29, 2020
Featured Insight

McMillan’s Employment and Labour Webinar

This annual workshop addresses significant legal developments and provides practical advice on responding to employee issues.

Details
November 10, 2020 - 11:30 am to 1:30 pm
Featured Insight

Federal Government Amends Canada Labour Code in Response to COVID-19

The Government of Canada has proposed amendments to the leave provisions in the Canada Labour Code and three new benefits for employees in response toCOVID-19.

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Oct 7, 2020
Featured Insight

Ontario Court of Appeal Comments on Service and Notice Calculation in the Context of an Asset Purchase Transaction

The Ontario Court of Appeal has provided helpful guidance for employers considering their obligations to longer-term employees after a business transaction.

Read More
Aug 5, 2020
Featured Insight

New Workplace Harassment and Violence Prevention Rules for Federally-Regulated Employers

The Government of Canada has published significant changes to the workplace harassment and violence provisions of the Canada Labour Code.

Read More
Jun 28, 2020
Featured Insight

COVID-19 – Employer Considerations & Planning for Work Disruption

Help for businesses to identify issues & suggest risk mitigation steps regarding the COVID-19 outbreak & the potential for economic & operational disruption

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Mar 11, 2020
Featured Insight

Stop the Spread: What Employers Need to Know About Coronavirus in the Workplace

As Canada confirms its first cases of the Coronavirus, we remind employers and employees of their rights and responsibilities in the workplace.

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Jan 29, 2020