That was fun! It reminded me of all those old flash games about angering people. ( Come to think of it, there were a lot of those... huh. )
There were a couple of times when I was waiting futilely for the coworkers to leave view of the main hall shredder, printer, and cooler. Wasn't too long, but it seemed like there weren't that many ways to influence movement.
I like the lighting effect. It makes telling Line-of-Sight easier. Though, I also appreciate the '!' icon.
Great work!