I'm all for trying to reason with an employer, but it sounds like you've been up the food chain a bit already. You have to ask yourself if it is practical to push it. And if you do, then remember, in the midst of widespread unemployment, it is an employer's market and that robs you of a lot of leverage. It is very easy to find unskilled labor these days. And if you irk the wrong people badly enough, it is also pretty easy to find cause to fire someone. But you know them better than we do, so if you really want to stand on principle, go for it. You may want to be looking for another job while you do though.