Introduction:
Family Mediation Settlement Privilege raises an important question in family law: when, if ever, can discussions or agreements arising from mediation be disclosed in Court? In today’s blog, Peter Graburn, senior family lawyer at Shim Law, reviews the governing principles and examines recent guidance from the Supreme Court of Canada.
It is generally accepted that mediation and mediation–arbitration are often better ways than Court to resolve family law disputes. These processes provide parties with greater control, flexibility, privacy, and the opportunity to resolve matters in a less adversarial environment. Confidentiality is a key feature of this approach, particularly in high-conflict or high-net- worth family disputes.
But what exactly makes mediation discussions confidential? And what happens if mediation results in an agreement that is never formalized in a final separation agreement? Recent decisions of the Supreme Court of Canada have clarified — though not entirely settled — how settlement privilege applies in the family law context.
Table of Contents
What Is Settlement Privilege?
Settlement privilege is a rule of evidence designed to encourage parties to resolve disputes without litigation. It renders communications and documents exchanged for the purpose of settlement inadmissible in Court, whether or not a settlement is ultimately reached. These are often referred to as “without prejudice” discussions.
The general rule is broad, but not absolute. Recognized exceptions exist, including cases involving negotiation misconduct such as fraud, misrepresentation, threats, or criminal conduct. Most importantly for family law, settlement privilege may give way where disclosure is necessary to prove the existence or scope of a settlement agreement. This is commonly referred to as the settlement exception.
As a general matter, settlement privilege will protect most negotiations and agreements reached during mediation.
Supreme Court of Canada on Settlement Privilege
The Supreme Court of Canada has repeatedly affirmed the importance of settlement privilege. In Union Carbide Canada Inc. v. Bombardier Inc. [2014 SCC 35], the Court emphasized the central role settlement privilege plays in promoting access to justice and encouraging frank settlement discussions. The Court stated (at paras. 1, 31–32) that settlement privilege:
“promotes honest and frank discussions between the parties, which can make it easier to reach settlement… Encouraging settlements has been recognized as a priority in our overcrowded justice system.”
However, the Court also confirmed the settlement exception, explaining (at para. 35):
“A communication that has led to a settlement will cease to be privileged if disclosing it is necessary to prove the existence or the scope of the settlement… Once the parties have agreed on a settlement, the general interest of promoting settlements requires that they be able to prove the terms of their agreement.”
Union Carbide, like earlier cases such as Sable Offshore Energy Inc. v. Ameron International Corp. [2013 SCC 37], arose in the commercial context. The question then becomes whether the same principles apply in family law.
Family Mediation and Vulnerable Spouses
That question was addressed directly in Association de médiation familiale du Québec v. Bouvier [2021 SCC 54]. In a 6–3 decision, the Supreme Court of Canada confirmed that the settlement exception can apply in the family law mediation context.
Writing for the majority, Justice Kasirer rejected the notion of absolute confidentiality in family mediation, stating (at para. 8):
“A rule of absolute confidentiality might not only deflect family mediation from its participatory and consensual foundations, but also undermine the parties’ adherence to this process… To reject the settlement exception… would interfere with the primary objective of family mediation, which is to reach an agreement resolving an existing or anticipated dispute.”
A key factor in Bouvier was the presence of procedural safeguards under Quebec’s government-sponsored mediation regime. These included the use of certified mediators and judicial oversight to confirm mediated agreements, particularly to protect vulnerable spouses.
The Minority View
The minority of the Court cautioned against directly importing commercial settlement principles into family law. Justice Karakatsanis emphasized the unique nature of family negotiations, observing (at paras. 134–135) that family law disputes are often characterized by emotional turmoil, power imbalances, and vulnerability, and that principles appropriate in
commercial litigation may be ill-suited in the family context.
What About Alberta?
Outside Quebec, the application of Bouvier is less certain. Alberta does not operate a comparable government-sponsored mediation regime with built-in procedural safeguards. As a result, whether and when the settlement exception will apply in Alberta family mediations will depend heavily on the specific facts of each case.
What is clear is that family law settlements are treated differently from commercial settlements, and Courts remain sensitive to issues of vulnerability, disclosure, and fairness.
The Role of Independent Legal Advice
One consistent takeaway from the case law is the importance of Independent Legal Advice (ILA). Whether entering into a mediation agreement, participating in mediation discussions, or finalizing a mediated settlement, ILA plays a critical role in protecting parties and reducing the risk that confidentiality or enforceability will later be challenged.
Final Thoughts
Settlement privilege remains a foundational principle in family mediation, but it is not absolute. The Supreme Court of Canada has confirmed that, in appropriate circumstances, mediated settlement discussions may be disclosed to prove the existence or scope of an agreement.
Family law mediation operates in a unique legal and emotional context. Parties, mediators, and lawyers must remain mindful of vulnerability, disclosure obligations, and the need for proper legal safeguards. Understanding how settlement privilege applies — and where its limits lie — is essential to ensuring that mediation remains both effective and fair.
