Agree to disagree. Even for a company that advertises and publishes their pay scales, an employee at level x will look at another employee at level x (with the

Agree to disagree. Even for a company that advertises and publishes their pay scales, an employee at level x will look at another employee at level x (with the same experience, same tenure, same everything) and think: "this isn't fair, I'm way more valuable to the company than they are". And maybe they're right, or maybe not. But the employee believes they are being treated unfairly all the same.