Pros
Work not too demanding. Always, always, always wonderful when helping a student and they finally understand something. Management generally accommodating for time off as long as hours are covered. Most coworkers/staff/faculty friendly and easy to get along with.
Cons
Poor vetting of supervisory staff. Myself & coworkers were mistreated and disrespected by new supervisor of our department, but administration doesn't want to step in. I've been asked to do things that I feel uncomfortable doing, and then punished when I don't do them. This person has also gone against policy on several things immediately after I explain policy. Besides that, the pay is pretty bad compared to other institutions. The "professional development" materials are a joke. There's little to no upward mobility for part-time staff unless you get really lucky and administration likes you.