With the best will in the world we don't all get treated the same.
What is the best way to respond if you find out someone you see as an equal is actually getting paid more?
This HBR article looks at the situation and how and why you should deal with it in a particular way to get the best outcome for you.
At most organizations, compensation information isn’t made public. Most of us don’t know how much money our coworkers make. But what happens when you do stumble on this sort of information — and discover that a peer makes more money than you do? How should you react? Should you tell your colleague that you know? Talk to your boss? How can you use the information to ask for a raise?