Case snapshot
At a glance
- Case
- Can You Opt Out of a Class Action Late in Ontario?
- Court / Tribunal
- Ontario Superior Court of Justice
- Citation
- 2026 ONSC 3891 ↗
- Date
- July 3, 2026
- Area of law
- Litigation Law
- Key issue
- Whether class members who discovered their harm after the opt-out deadline had passed could obtain a court-ordered extension to opt out of a settled class action.
- Outcome
- The motion for a late opt-out extension was dismissed because, although the moving parties showed excusable neglect, the court found that granting the extension would prejudice the defendants and undermine the integrity of the settlement process.
- Why it matters
- If you are a class member who missed an opt-out deadline, this case clarifies that a settlement in principle can make it legally impossible to exit a class action — even if you had a good reason for missing the deadline.
Legal principle
The rule from this case
Under Ontario's Class Proceedings Act, 1992, a court has broad discretion under s. 12 to extend an opt-out deadline. However, that discretion is guided by the two-part test from Johnson v. Ontario: the moving party must show (1) excusable neglect for missing the deadline, and (2) that granting the extension would not prejudice the defendants or the integrity of the court process. In this case, the court accepted that not receiving direct notice of the class action or the opt-out deadline — and not being advised by counsel during an initial call — could amount to excusable neglect. But the second part of the test proved fatal to the motion. Because the parties had already negotiated a lump-sum settlement covering all class members, allowing late opt-outs would undermine the certainty and finality that both sides had relied upon when reaching that agreement. The court emphasized that once a settlement in principle is in place, the cut-off for opt-outs takes on heightened importance.
Important limits
What this does not mean
This decision does not mean that late opt-out requests will always be refused in Ontario class actions. The court's ruling turned heavily on the fact that a settlement in principle had already been reached — a factor that created concrete prejudice to the defendants. In cases where no settlement has been negotiated, the prejudice analysis could look very different, and a court might be more willing to exercise its discretion in favour of the moving party. The case also does not establish that discovering your harm after the opt-out deadline automatically bars you from seeking relief. The court did not accept a 'discovery-based impossibility' argument as a standalone reason to extend the deadline, but that does not mean the timing of harm discovery is irrelevant in every class action context. Each situation depends on its own facts, and class members with concerns about missed deadlines should seek independent legal advice promptly.
Can you opt out of a class action after the deadline has passed?
Yes, it is possible to ask a court to extend an opt-out deadline in Ontario — but the bar is high, and timing matters enormously. In Nardi v. Sorin Group Deutschland GmbH, 2026 ONSC 3891 (CanLII), the Ontario Superior Court of Justice dismissed a motion to extend an opt-out deadline, offering a detailed look at how courts weigh these requests when a settlement is already on the table.
If you are a class member who missed an opt-out deadline, understanding this decision can help you assess your options — and why acting quickly is critical.
What is the legal test for a late opt-out in Ontario?
The governing test comes from Johnson v. Ontario and requires the moving party to satisfy two conditions. First, the delay must be the result of excusable neglect — meaning there was a reasonable, good-faith basis for missing the deadline. Second, granting the extension must not prejudice the defendants or undermine the integrity of the litigation process.
Both parts of the test must be met. Satisfying only one is not enough. The court’s authority to grant such an extension flows from s. 12 of the Class Proceedings Act, 1992, which gives judges broad discretion to make orders that further the objectives of class proceedings — but that discretion is not unlimited.
What counts as excusable neglect in a class action opt-out?
Excusable neglect means the moving party had a genuine, reasonable explanation for not meeting the deadline. In this case, the court found that the moving parties had not received direct notice of the class action or the opt-out deadline, and that counsel had not advised them of the deadline during an initial call.
Those facts were enough to satisfy the first branch of the Johnson test. The court acknowledged that class members cannot reasonably be expected to meet deadlines they were never made aware of. Lack of notice — particularly where a class member had no meaningful opportunity to learn of their rights — can support a finding of excusable neglect.
Does discovering your injury after the deadline change the analysis?
Not automatically. The moving parties argued that because they only discovered the harm after the opt-out period had closed, it was effectively impossible for them to have opted out in time. The court rejected this ‘discovery-based impossibility’ argument as a standalone basis for extending the deadline.
Under Ontario class action law, class membership is determined at certification, not at the point when an individual realizes they have been harmed. The latency of damages — the fact that some injuries take time to appear — does not on its own override a court-ordered opt-out cut-off. This is an important distinction for anyone who believes their late discovery of harm should entitle them to exit the class.
Why did the court refuse to grant the extension despite excusable neglect?
The motion failed on the second branch of the Johnson test: prejudice. By the time the motion was heard, the parties had negotiated a lump-sum settlement in principle that was designed to provide a class-wide release. That settlement was structured in direct reliance on the opt-out deadline having expired.
Allowing new opt-outs at that stage would have undermined the certainty and finality the defendants had bargained for. The court referenced Heyder v. Canada in emphasizing that steps taken toward settlement can themselves constitute prejudice. Where a defendant has moved toward resolving a class action on the basis that the class is fixed, reopening the class membership question is not a neutral act — it disrupts the entire settlement framework.
What role does settlement play in opt-out deadline decisions?
Settlement is a pivotal factor. Once a settlement in principle has been reached, the calculus shifts significantly against late opt-outs. Courts place considerable weight on the certainty and finality that settlements are meant to provide — both for defendants who are releasing claims and for class members who are receiving compensation.
This does not mean settlement makes a late opt-out legally impossible. But it does mean that the prejudice analysis becomes much harder to overcome. If you are considering whether to opt out of a class action, the safest course is to act before any settlement discussions become public — or ideally, well before the opt-out deadline itself.
Practical takeaways for class action members
- Act before the deadline. Once an opt-out deadline passes, your options narrow dramatically — and a settlement in principle can close them off entirely.
- Watch for class action notices. Courts accept that lack of direct notice can support excusable neglect, but you still need to bring a motion and satisfy both branches of the Johnson test.
- Do not rely on discovering your harm later. The timing of your injury’s discovery does not automatically reset the opt-out clock under Ontario law.
- Get independent legal advice early. If you receive any notice about a class action that may affect you, consult a lawyer promptly — even before you know the full extent of your damages.
- Understand what a settlement means for your rights. Once a class-wide settlement is in principle agreed upon, your ability to pursue an independent claim may be significantly restricted.
Our Ontario litigation lawyers regularly advise individuals and businesses on class action participation, opt-out rights, and independent claims. Whether you are in Burlington, Toronto, or elsewhere in Ontario, understanding your position before a deadline passes can make all the difference.
Nardi v. Sorin Group Deutschland GmbH, 2026 ONSC 3891 (CanLII) is available at https://www.canlii.org/en/on/onsc/doc/2026/2026onsc3891/2026onsc3891.html.
UL Lawyers offers a free initial consultation from our Burlington office and serves clients across Ontario. If you have questions about a class action notice or a missed opt-out deadline, reach out to our civil litigation team to discuss your situation.
This article is automated commentary on a public court decision and is for general information only — not legal advice. Decisions rely on facts unique to each case. If you are affected by a similar issue, contact a lawyer for advice specific to your situation.
FAQ
Frequently asked questions
If you miss the opt-out deadline, you remain a class member and are bound by any settlement or judgment. You can ask the court to extend the deadline, but you must show excusable neglect and that granting the extension would not prejudice the defendants — a difficult test, especially if a settlement has already been reached.
Generally, no. Once the opt-out deadline has passed and you are bound by a class action settlement or judgment, your individual claims related to that class action are typically released. This is why it is critical to review class action notices carefully and seek legal advice before the deadline.
Yes, the two-part Johnson v. Ontario test — excusable neglect plus no prejudice — is the standard Ontario courts apply when deciding whether to extend a class action opt-out deadline. Courts exercise this discretion under s. 12 of the Class Proceedings Act, 1992, on a case-by-case basis.