Teaching for Little Pay

This morning I'm having a hard time getting motivated to go to work. I teach at 10 a.m. and again tonight at 6 p.m.
I have some great lesson plans -- things that push college students out of their comfort zone. The interpersonal communications class has to judge the body language of people in photos, and later they'll put themselves in order by birthday without speaking. They'll see clips from the Daily Show about sexism and racism.
The English Comp class will draw houses then write instructions in hopes someone else can follow the instructions to draw the same house. The goal there is that the writer can begin to consider the audience and which information needs to be included.
So, lesson plans in place, I still feel sluggish and sit in front of the computer instead of hopping in the shower.
The reason, last week, this private, for-profit college emailed us that "Ooops! Forgot to put paychecks through. We'll just include it all in the next pay period."
And I find that teaching for free is less motivating than teaching for money.