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Class Actions Law

From programming and advocacy to peer recognition and relevant resources, OBA Section membership connects you with education, engagement and leadership opportunities to propel you to the forefront of your area of practice.

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Resources, Articles, & Advocacy

Legislative Update | July 24, 2026

Your OBA LegUp Policy and Legislative Update Week of July 20

New Regional Senior Justice:  Justice Marlyse Dumel has been appointed as a new regional senior justice to the Ontario Court of Justice in the East Region, effective September 25, 2026. In March 2017, Justice Dumel was appointed to the OCJ, presiding in Ottawa in both English and French. Between 2022 and 2026, she was the local administrative judge. 

Legislative Update | July 17, 2026

Your OBA LegUp Policy and Legislative Update Week of July 13

Ticket Resale Updates: Premier Ford’s office has instructed the preparation of regulations to fix the new anti-scalping law. The cap on resale tickets was introduced as part of the 2026 budget. The draft regulations are intended to improve enforcement by defining the face value of a ticket and determining how secondary markets will have to verify it.

Article | July 15, 2026

Coordinating Multi-Jurisdictional Class Actions: Yee v. Telus International and The First Application of Sections 5(6)-5(8) of Ontario’s Class Proceedings Act

Parallel class actions filed in multiple provinces are a familiar feature of Canadian class action practice, long understood to strain one of the central purposes of class proceedings: judicial economy. To address this concern, several provinces have amended their class proceedings legislation to provide additional tools for addressing parallel multi-jurisdictional class actions. Ontario did so in 2020 through amendments made to the Class Proceedings Act, 1992, which included the addition of sections 5(6)-5(8). More than five years after these provisions were implemented, the Ontario Superior Court of Justice, in Yee v. Telus International (Cda) Inc., 2026 ONSC 3165, has finally interpreted and applied them – providing valuable guidance for counsel on the factors to be considered where a stay of an Ontario class proceeding is sought on the basis of overlapping parallel class actions.

Article | July 15, 2026

How Will Funding Be Weighed on Your Carriage Motion?

This article reviews court commentary regarding funding arrangements, and the importance funding could be given in the future. While funding has largely been a neutral factor in previous carriage decisions, courts have in various ways emphasized the importance of presenting a reliable funding plan at this stage.

Article | July 13, 2026

The Emerging Role of Predominance in Ontario Class Actions: Pedersen V. Advanced Bionics LLC

A recent certification decision of the Ontario Superior Court of Justice, Pedersen v. Advanced Bionics LLC, provides important guidance on the predominance requirement introduced by the 2020 amendments to Ontario's Class Proceedings Act, 1992. The case is noteworthy because it is one of the first decisions to meaningfully apply the predominance requirement following Justice Perell's analysis in Banman v. Ontario, 2023 ONSC 6187. This article considers the Court's novel use of the predominance requirement as a case-management tool capable of shaping and rehabilitating proposed class actions.

Legislative Update | July 13, 2026

Your OBA LegUp Policy and Legislative Update Week of July 6

Ticket Resellers Untouched: Despite ticket resale platforms running afoul of Ontario’s new price cap law, the province has not fined any violations to date.

News | July 07, 2026

AI is Reshaping Legal Practice. Are You Ready?

Why Ontario lawyers are marking August 18 on their calendars.

Legislative Update | July 03, 2026

Your OBA LegUp Policy and Legislative Update Week of June 29

Tenant A/C Rules: An Ontario law came into effect this week explicitly allowing tenants to install window air conditioning units and portable units.

Legislative Update | June 26, 2026

Your OBA LegUp Policy and Legislative Update Week of June 22

Supreme Court Appointment: Prime Minister Carney announced the nomination of Chief Justice Glenn Joyal to the Supreme Court of Canada, praising his career as Chief Justice of Manitoba's Court of King's Bench and noting that he has "demonstrated the integrity, experience, and sound judgment that service on our highest court demands."

Court of Appeal for Ontario | June 22, 2026

Ontario Court of Appeal Portal Feedback

The Ontario Court of Appeal Public Portal has recently launched a new online public portal for parties and legal representatives