As we've said, it is negative for the Canadian economy. Canada's economy has, over time, demonstrated the ability to flexibly respond to various shocks. Through the period of rising oil prices, labour and capital shifted across sectors and across regions in response to the incentives created by that. Some of the same trends will likely reverse in response to lower oil prices. Overall, as I said, it is negative for the Canadian economy.
On March 12th, 2015. See this statement in context.