A person gets "thanked" every time they get a paycheck. How much more thanks do you need? By "busting you butt" do you mean working your regular shift or are you really "busting your butt" and working extra?  Doing what you are hired to do I.e. "Work" should be expected and doesn't need more thanks than your regular pay. What's with people who think they need thanks and ego stroking for every little thing they do?