There's a chain that originated in the Ottawa Ontario region, which expanded into other parts of Ontario via franchises: The Works. I believe all are licensed to serve beer. Best burger was the 'Olive Oyl', which received its name from the feta cheese, black olive, and raw baby spinach.
Honourable mention to a little joint on the east side of provincial highway #6, north of Arthur Ontario, on the way to Owen Sound. Hamburger Patty's it was called. Sadly, it closed a few years back.