 I was a former college teacher, and I was part-time for such a long time, mainly because part-timers cannot unionize a collective bargain. I guess it assumes that there's an equal relationship between employer and employee, which I don't really think that's the case because an employer can fire an employee at any moment, at least in the colleges, for no reason, really. But it's just not fair because you become a full-time part-timer, which is like I call it the Walmart syndrome.