Long Hours

I've been working the front desk from 12am-6am every day this week except Wed because none of my co-workers signed up to take the 3-6am shift on any day permanently. I'm suppose to only work 12-3am, but until we get new students hired, I'm stuck working six hours on most days. Up side: I get payed a lot more and get plenty of time to do homework. Down side: I get really tired during classes.