>Pay transparency detrimental to you, as an individual. To live a happy life, you must figure out your own purpose and use your mind to achieve it. Happiness is not the result of income, nor is money required to be happy. Your happiness is a function of the achievement of the values you have defined for yourself. If you allow the income of others to influence your decision making, you are only hurting yourself. You should not leave a job that is satisfying in its essentials - that is, it fits with your purpose, you do meaningful work - merely because you discover someone else makes more; that would only hurt you. You don't know - can't know - their purpose, their value, their preferences, that lead to their income and work environment.

How about we let people judge that themselves? It's everyones job not to hurt themselves, so how about we make sure everyone has as much information as the most powerful in the room. Otherwise, let's make the top 1% "happier" and impose a 100% tax on all income more than 3 standard deviations from the median eh?

//edit: I saw in another comment, you talked about pay transparency not making the wages rise. It might now. But then it will cause people to quit jobs where they are not valued, increasing their happiness.

//edit2: also, you sidestepped the question. Humans are not as unique as random numbers, amazon goods are not all the same. If there are 5 brands of battery, we don't say it is immoral to share the prices and compare because "each brand carries its unique and special history". It's a battery, 5V, X watt, Y $. Likewise, if I get hired to design a product, they don't care about my extensive research in japanese mud ball culture. I'm a project designer, education X, working hours Y, pay Z, expected outcome for the company Z*(1+some positive number).