The Supreme Court heard argument and reserved judgment on appeal from an Ontario Court of Appeal decision addressing RCMP collective bargaining. The decision under appeal – Mounted Police Association of Ontario v. Canada (Attorney General), 2012 ONCA 363 – upheld, as constitutionally valid, a regulation imposing a specific labour relations regime on RCMP members as the only process by which they could address labour issues with RCMP management. The police associations argued that the Court of Appeal had erred in supporting legislation that prevented RCMP employees from collective bargaining through an independent association chosen by them.