I would say Ontario is. The province had an older worker initiative for health care workers. Now it has paused, but they allowed nurses to stay in the workforce after the retirement age. The best scenario was at the Ottawa Hospital, where after retirement age they would offer two nurses the opportunity to become specialist mentors. They would be brought back into the workplace to do one-on-one education and work on policy standards for the facilities. Those are about the only two programs that I know of offhand.
On May 7th, 2013. See this statement in context.