If you are coming to Canada as an experienced pilot you will face an uphill battle. That is not to say that it is impossible. Suffice to say, if you already have a connection to Canada by way of citizenship or landed immigrant status you have one less hurdle to face.
There is no shortage of pilots, though there is a shortage of higher time experienced pilots working for smaller carriers. Not too many of the smaller carriers have clued into the fact that perhaps it is time they start treating the ones they do have a little better. If you come here with experience you should be able to bypass some of the hurdles faced by a low timer but don't expect to waltz into an Airline job. On that note, starting pay (with a Major Airline) here is about $35K to $60K depending on the carrier.