By: Robert Hamilton & Nick Ettinger
PDF Version: Yahey v British Columbia and the Clarification of the Standard for a Treaty Infringement
Case Commented On: Yahey v British Columbia, 2021 BCSC 1287 (CanLII)
On June 29, 2021, the Supreme Court of British Columbia ruled that the Crown had infringed Treaty 8 by “permitting the cumulative impacts of industrial development to meaningfully diminish [Blueberry River First Nation’s (Blueberry)] exercise of its treaty rights” (Yahey v British Columbia, 2021 BCSC 1287 (CanLII) at para 1884 [Yahey]). This is the first time a court has held that the cumulative effects of multiple projects may form the basis of a treaty infringement. The trial judge’s nuanced articulation of the standard for what constitutes a treaty infringement enabled this groundbreaking development (see paras 445-547). We reviewed the factual and legal findings of the decision in a previous post. This post unpacks the doctrinal aspects of treaty infringement in more detail to contextualize Justice Emily Burke’s navigation of infringement case law and formulation of the “significantly or meaningfully diminished” standard in Yahey (at para 541). While some pundits have interpreted Yahey to be a dramatic lowering of the standard for an infringement, we believe the decision is an insightful clarification and faithful application of Supreme Court precedent.