And how does this further complicate the gender inequality issues, in terms of salary negotiations? A common tactic is, if a company knows what you're making,

And how does this further complicate the gender inequality issues, in terms of salary negotiations? A common tactic is, if a company knows what you're making, they'll try to hold your earnings as close as possible to something only slightly better than any potential raise you'd be entitled to at your current employer, and you'll get the same tactic from multiple potential employers. If you're only entitled to a 3% raise, organizations with access to this information might only ever offer 5%, and refuse to go higher. With this information in the picture, lower salaries mysteriously stay low, even for some lateral moves, depending on who you are and what they can dig up on you.