Drawing a Line on the Duty to Defend: When are Insurers Required to Contribute?
By Herman Khangura, J.D., B.A.
In 2024, Ontario’s top court revisited an insurer’s duty to defend its insured when multiple policies are available to respond. The Ontario Court of Appeal (“ONCA”) reviewed the role of non-concurrent insurers and pushed back on coverage overreach. Two recent decisions – Loblaw Companies Limited v. Royal & Sun Alliance Insurance Company of Canada[1] and Live Nation Ontario Concerts GP, Inc. v. Aviva Insurance Company of Canada[2] – were released within months of each other and, although factually distinct, share some common themes.[3] The two cases emphasize the primacy of pleadings, the inviolability of policy structures (such as self-insured retentions), and the limits on equitable contribution among insurers.