Being an underemployed part-time library worker has some benefits, especially for my co-workers. Anytime one of my them needs to swap a shift, they know that if they ask me, 9 times out of 10, I will say "sure." I don't mind the scheduling changes, there's rarely any conflicts with my tutoring.
So when my branch manager asked if I could switch Saturdays with her, I told her go for it. Later on in the week, the Board of Supervisors decided to make Friday, July 5th, a paid holiday which means that I get an extra long weekend, can't argue with that!