When Is a Mediated Family Law Settlement Binding?

In Wilkinson v Pettis, 2026 ABKB 122, the Alberta Court of King’s Bench considered whether terms reached at family mediation were binding despite the parties never signing a formal separation agreement.

The parties had separated after approximately 11 years of cohabitation and had two children. They attended mediation to address parenting, child support, spousal support, and family property. Although their lawyers did not attend, both parties had received legal advice and could contact counsel throughout the mediation.

Following the mediation, the mediator issued a detailed report setting out the agreed terms. The parties then acted on those terms. Mr. Pettis moved out of the family home, made the required payments, purchased tires for Ms. Wilkinson’s vehicle, and followed the parenting schedule. Ms. Wilkinson later argued that no binding agreement had been reached and that Mr. Pettis had not provided sufficient financial disclosure.

The Law

Relying on Toal v Podlubny, 2025 ABKB 71, the Court confirmed that a mediated settlement recorded in a mediator’s report is generally binding where the parties had the benefit of legal counsel throughout the process. The Court stated:

“A mediated settlement expressed in a mediator report…is a binding and enforceable agreement subject to exceptional circumstances.”

The detailed mediator’s report showed that the parties had reviewed a draft separation agreement paragraph by paragraph and had reached a meeting of the minds.

The Court then applied Anderson v Anderson, 2023 SCC 13 – an important Supreme Court of Canada case – to determine whether the agreement should be enforced. This required the Court to consider whether the agreement was valid under ordinary contract principles, whether the bargaining process was affected by pressure, oppression, vulnerability, or misinformation, and whether the agreement was substantively just and equitable.

The Court found no evidence of an unfair bargaining process. Although complete corporate financial records were unavailable, the business had only recently been established and the information did not yet exist. There was no concealment or unequal access to financial information.

Finally, the Court acknowledged that the agreement did not comply with sections 37 and 38 of Alberta’s Family Property Act, which contain formal requirements for family property agreements. Nevertheless, the Court found that the agreement was fairly negotiated, just and equitable, and consistent with the objectives of the legislation.

Bottom Line:

The Court declared the mediated agreement valid, binding, and enforceable. However, the parenting schedule and child support arrangements were temporary and remained subject to review once updated financial information became available.

The decision is an important reminder that parties may be bound by terms reached at mediation even before a formal separation agreement is signed. A detailed mediator’s report, access to legal advice, and conduct consistent with the settlement may be enough to establish an enforceable agreement.

If you are navigating a separation, mediation, or family property dispute, Stokes Law LLP can help you understand your rights, prepare for negotiations, and work toward a clear and enforceable resolution. Contact our office to discuss your circumstances and the options available to you.