When a liability insurer issues a reservation of rights letter, it sends a signal that professionals and business owners across Canada must understand completely. This communication represents far more than administrative formality or routine correspondence. It marks a fundamental shift in the relationship between insurer and insured, one that carries substantial implications for how a liability claim will be defended and who will ultimately bear financial responsibility for any judgment or settlement. For Canadian professionals navigating the defence of a liability claim, comprehending what a reservation of rights letter signals and why it matters requires careful attention to the legal principles that govern insurance relationships, the practical dynamics it introduces into claim handling, and the strategic decisions it may necessitate.
The reservation of rights mechanism exists because liability insurance policies contain conditions, exclusions, and limitations that may not be immediately determinable when a claim first arises. When an insured faces a lawsuit or demand, the insurer must respond promptly, yet the facts that will ultimately determine coverage may remain unclear or contested. The law across Canadian common law provinces recognizes that insurers cannot simply refuse to defend while coverage questions remain unresolved, nor can they be forced to waive their coverage defences by providing a defence. The reservation of rights letter resolves this tension by allowing the insurer to defend the claim while expressly preserving its right to deny coverage or seek reimbursement if facts later establish that the policy does not respond to the loss. In British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, and the Atlantic provinces, courts have consistently upheld the legitimacy of this approach, provided the insurer communicates clearly and timely. Quebec's framework under the Civil Code of Quebec operates somewhat differently, as the insurer's duty to defend and the mechanisms for reserving rights must accord with civil law principles governing insurance contracts found in articles 2495 through 2628 of the Civil Code, though the practical effect of preserving coverage defences while providing interim defence remains conceptually similar.