Freezing Rain Films has released a casting call (brought to my attention by the always on, April Lim) looking for "Ottawa zombies".
They are seeking craft service coordinators, script supervisors, production assistants, camera operators, and production sound mixers according to their website. In my opinion, it is up to you to pitch your skill so check out the nuts and bolts here, and some basic information on the Ottawa Start blog.
The production is called The Monsters Among Us which to some, can describe a city all to well! As a side note, they are also seeking locations so check the locations tab on their site for instructions on how to submit photos of your spooky farmhouse or abandoned shopping mall.