Do I call in for a day off?

You work too hard to earning money. it is really good but better you get a day off to care your health also.

We have the same scenario. I have 3 jobs and one freelancing activity. In my case; if my body can't handle too much of it, I have to switch scheds; preferably what we called shift bid. Most of us would like to talk about switching sched at each other to cope up either an important activity or a necessity to rest. In my case; for the past 2 months I was keeping a 5AM to 2PM shift and now I'm getting a 10PM to 7AM shift so I can get the other work for the 9AM-5PM shift in my second work. Now I'm thinking of getting a 1AM to 10AM shift for my health preference. (I keep on getting asleep at work and my performance in adhearance is getting worse; LOL) Before getting a shift being bid; or a request of schedules, you should assest yourself if this is a best sched for you and check other options. Then be vocal in telling your boss. As my personal experience; I also allow my agents to get their desired shifts as long as it doesn't collide with the daily performance of the team and what we called manpower count. Representatives on the phone should get enough rest so they could have their performance level at its finest.

if you are always asking for shifts and then asking for a day off, you are sending a mixed message to your boss, i think. depends on what your boss is like, i guess.