Robo-
Why don't you take all of tomorrow off too, and tell the boss that I said it was OK. You have done a very nice day's work, from 9:30 this morning till now, with only 3 breaks of any noticeable duration. I would say that your work is worth at least half of what they pay you.
So just go home, and don't worry about a thing. if your bosses complain, just refer them to me.
The number to call is BR-549.