Quebec sits at the table setting the standards for both certification and for prior learning assessment, but it looks after its own immigration, and it doesn't require the certification exam as entry to practice. But Quebec is absolutely at the table as a partner in all discussions related to prior learning assessment and certification. It's in its legislation that it can't require the certification exam, but the OPTMQ does endorse the certification as a quality measure.
On October 18th, 2011. See this statement in context.