My wife works for commission + base. For several years she has won awards for the highest sales in her province. She did this by working long hard hours and she enjoys her job. People who worked with her were constantly complaining they could not make enough money. Enough people complained so the company decided to rework the compensation structure. They raised the base rate and lowered the commission. This helped a lot of the workers which is a good thing of course but totally fucked over my wife. She lost more than 20% of her annual income. She told management that in trying to help employees they should not hurt their biggest producers. They told her they had to make it a blanket change and there was nothing they could do. Now she doesn't put in half the effort she used to.