Bottom line: don't work. You will have plenty of work already and if you don't use what little spare time you have to relax, you will go crazy. I guess the only exception would be a job where you can literally sit in the same place the entire time and study (taking tickets for a single-screen movie theater?). Or something that you really, really love doing (playing guitar at the local coffee shop). Even still though, listen to the other people on this thread. It doesn't make sense from a financial standpoint. A single grade, especially in first year, could make the difference between tens of thousands of dollars in salary. You can maybe swing a minor job in your 2nd or 3rd year, but in your first year you should NOT have a job. Period.