There really isn't. In a negotiation knowing the price paid for a product previously, or in this case a person, is a distinct advantage to the person paying. A

There really isn't. In a negotiation knowing the price paid for a product previously, or in this case a person, is a distinct advantage to the person paying. And will do nothing else but perpetuate low pay for underpaid people. Think of the scenarios: 1. I made X at my last job where X is far less than what you are paying your current employees. Well as a business owner and negotiator if I offer them X + a small bump I can probably get away with paying less. 2. I made X at my last job where X is far more than you are paying your current employees. You either are going to stretch the budget, or negotiate. So it is always a negotiation unless the person says they made less. A true negotiation is "How much are you asking for?" A person selling products isn't going to tell someone what they are selling their products for to a competitor. They are both going to negotiate a price or decide not to do business.