Economic inequality is a hot topic right now. Employers knowing everyone's salaries, but not the employees, puts the employees at a disadvantage when negotiating salary.

One option would be to require all companies to publish employees salaries. Would this requirement be more or less onerous than other options?

One argument is that it hurts businesses - but if every business is required to do it, then it is an even playing field. Obviously that cannot happen in an international business setting - so would it put the countries that implement it at a disadvantage, or would the economic gains outweigh the decrease in competitiveness?