I have found myself in a situation, where I may have to renew my work permit in order to maintain my legal status within Canada. My current Post-Graduate Work Permit expires in April 2014, and my PR application is nowhere near to be approved (my estimate is that it will take 6 to 12 more months, depending on how fast my medical examination will reach them, and how long it will take for a background check). Luckily, there is a “Bridging” Open Work Permit Program for applicants under the Federal Skilled Worker Program (FSWP), Canadian Experience Class (CEC), Provincial Nominee Program (PNP) or the Federal Skilled Trades Program (FSTP).
Getting an off-campus work permit will legally let you work for 20 hours per week while studies are in session, and up to 40 hours during vacations (some restrictions apply). My first job during university was as a Program Host for Jet Set Sports during 2010 Vancouver Winter Olympics (highly paid fun with free admission to all official Olympic venues). I had to get an off-campus work permit in order to be legally allowed to work, which took me about a month to acquire.