[kasey_junk]

I have as well and have pointed out that it is probably illegal and potentially opens them to civil liability.

I've also seen manager training materials that specifically tell managers not to even hint that salary is a secret topic as the liability involved is problematic.

It is one thing to claim that worker protections don't exist, its another to claim that you refuse to take advantage of them.

[kenko]

It's still true that you have limited practical redress if you're fired (especially in an at-will state).