Hi,
In Canada if your course of study is of 1 year duration - you get a Post Graduate Work Permit of 1 year after your course. If it is more than one year, you get a 3 year PG work permit.
Also, after studying full time in canada for 6 months, you get an off campus work permit - this means you can work outside (off campus) with a work permit after studying full time in canada for 6 months.
You should visit cic.gc.ca for more information on Study Permits.
Hope this was helpful.