Blue water,
while the formula you cite is not a guaranty, I can guaranty you that if you only work as hard as you get paid for, there is no reason to give you a raise. I had freinds growing up that would state, I will never work that hard for $5.00 an hour, and then wonder why they never got a raise. I had a good talk with one younger freidn and convinced him to spend the next couple of months working as hard as he could. He was convince his boss was a jerk and wouldn't notice. He was right, but one of the suppliers coming in noticed offered him a much better job. I have a very sucessful freind that would watch for minimally paid workers that were working overly hard and then hire them away. His favorite tactic was to find waitresses and hire them as sales people.