larryc and jackit, it is a major issue as my boss is trying to use my failure to do the sandwiches as a reason to terminate me. She is saying she is not renewing my contract (which I've never seen). She claims the contract is for a year.
If your boss is trying to use this action as a reason to terminate you, she has some reason besides your failure to make sandwiches. I'm not saying she's right, but she's using the sandwiches as a formal pretext for something she thinks is less defensible.
Which is odd, since Georgia is a right-to-work state, and she can fire you for the hell of it anytime she wants.
I simply can't believe you don't have a contract. Didn't you sign something when you took the job? I'd check with HR or the office of the Provost or wherever faculty contracts reside and see what's there. You're also protected to a degree by whatever the faculty handbook says.
Several things:
1. A lawyer isn't a bad idea, but may well not help, given that GA is a right-to-work state and you are almost certainly an at-will employee, unless your contract states otherwise.
2. Your boss is a jerk, and/or you have done something other than not making sandwiches that has made her want to get rid of you.
3. Making you do the sandwich thing was a stupid waste of your time, but it was foolish of you not to do it. Four hours isn't much time relative to what the apparent consequences are. It's quite sure that you've disastrously misread your boss, or you would have done the sandwiches--she's out to get you and when someone with more power than you have is out to get you, it's pretty smart not to give that person any ammo with which to complete the getting.
4. If your boss is going to can you anyhow, it's worth talking to her supervisor, IF the supervisor is likely to be reasonable. You'd be surprised how often deans, etc., know that their chairs, etc., are jerks, but sometimes there's nothing to be done about it directly. At the same time, a well-placed e-mail from said dean to said chair often smoothes things nicely.
5. You need to find another job, obviously, where you need to pay more careful attention to the signs and signals. You did blow this one regardless of whether the outcome is otherwise justified or not.