I m not agree with sabby2612. He is living in Canada still producing such a misconcept. Ever1 has a right to put their views but my point is totally contradicts u brother,, so i m asking for sorry before,, let me complete now.. I have told about post graduate work permit before and it is true that less than 2 years u r not going to get 3 years work permit in 80 t0 90% cases. In some case ur luck will work nd u will get it but it totally depend on visa officer mood. To justify my points, i m posting the official link of Canadian government.
http://www.cic.gc.ca/english/study/work-postgrad-who.asp
http://www.cic.gc.ca/english/study/work-postgrad-who.asp