The Ontario Court of Appeal has fundamentally changed the law governing partial settlement agreements in multi-party litigation. In 1086289 Ontario Inc. (Urban Electrical Contractors) v. Welland (City), 2026 ONCA 352, a five-judge panel unanimously overruled Handley Estate v. DTE Industries Limited, ending the automatic stay remedy that had become a defining feature of the doctrine.
The Handley Estate Rule
Under Handley Estate, parties who entered into a partial settlement agreement that changed the adversarial landscape of the litigation were required to disclose the agreement immediately to the non-settling parties and the court. Failure to do so was automatically treated as an abuse of process, and a stay of proceedings was considered the only available remedy. The moving party did not need to establish prejudice.
Over time, the rule attracted criticism for producing harsh and disproportionate results. A technical failure to disclose could result in the dismissal of an otherwise meritorious claim, regardless of whether the non-disclosure caused any actual harm.
A Return to Traditional Abuse of Process Principles
The Court concluded that Handley Estate had been wrongly decided because it departed from longstanding abuse of process principles. Abuse of process has traditionally required a contextual inquiry into whether the conduct caused unfairness, prejudice, oppression, or harm to the administration of justice. Likewise, remedies must be tailored to the circumstances of the case and guided by proportionality.
The Court emphasized that judicial discretion is central to both determining whether an abuse of process has occurred and selecting an appropriate remedy. By mandating both a finding of abuse and a stay of proceedings, Handley Estate removed that discretion.
The New Framework
Going forward, failures to disclose partial settlement agreements will be assessed under ordinary abuse of process principles. Courts must consider the specific facts of the case, including the nature of the non-disclosure, its effect on the litigation, and any resulting prejudice to the parties or the administration of justice.
A stay of proceedings remains available, but only in the clearest cases where no lesser remedy would adequately address the misconduct. Other remedies may include costs consequences, additional discovery, disclosure orders, evidentiary sanctions, or other orders that are just in the circumstances.
Alignment with Rule 49.14
The decision also reflects the approach adopted by Rule 49.14 of the Rules of Civil Procedure, which came into force in 2025. Rule 49.14 requires disclosure of partial settlement agreements and provides courts with a range of remedial options instead of a mandatory stay. The Court described the rule as reinforcing a flexible and proportionate approach to alleged non-disclosure.
Takeaway for Litigators
The decision replaces a rigid rule with a discretionary framework focused on fairness and proportionality. While prompt disclosure of partial settlement agreements remains critical, a failure to disclose will no longer automatically end the litigation. Instead, courts will assess whether the conduct caused actual prejudice or undermined the administration of justice and will fashion a remedy that fits the circumstances. For litigators, the Court has exchanged the Handley Estate “axe” for a more precise judicial “scalpel.”
Thanks for reading!
Li-Mei Mayer