If you are referring to Ontario Ministry of Transportation in relation to an Ontario Driver's licence, this might be somewhat of use, although I can not find a link at this precise moment.
I remember extension part until July 1st, 2010. The parameters for extension were granted to those people that needed testing to upgrade a licence class (G1 to G2 to G, M1 to M2 to M, or maintain licence A). All licences (not requiring testing - as the testers were the only ones on strike) could be renewed without problem at a licence bureau.
Above is merely a suggestion/thought and in no way constitutes legal advice or views of my employer. www.OHTA.ca