This upcoming Thursday (January 10th) the McMaster Students Union has an application deadline for over 15 Part Time Manager Positions! These positions will begin formally in Fall 2013 (with variable summer hours that can also be claimed) and constitute arguably some of the most rewarding and engaging jobs on campus. For each managerial position you get to actually run major MSU services like SHEC, Advocacy, Maroons etc while getting paid on average 8-15 hours a week with a flexible work schedule.
My personal time within the MSU is almost done and to be fully honest I don't regret a day of getting involved with the MSU all those years ago.
Take a look here:
https://www.msumcmaster.ca/jobs