Chicken Lips...
Nav Canada operates the air navigation system in Canada. They are definately short-staffed, a situation that existed even when the system was operated by the government.
I can't speak to the benefits offered, except to say that many controllers are very unhappy with their current contract.
Anyways, here is a link to the the Nav Canada recruiting web-site:
http://www.navcanada.ca/publications/recruit/cover.htm
And here is a link to the Canadian Air Traffic Controllers Association (CATCA) web-site:
http://www.squawkident.com/