Employers should be forced to be transparent as well. you know, things like a legally binding wage range on a job advertisement: Telling folks first thing in an interview what the pay range is as well as putting it in the advert (to cover anyone that was simply referred). The range should include all salaries at that position, if there are other people working it. If the 'starting pay' is less than current employees make, this should be justified (current employees have had raises, for example) This should be updated yearly and made public to your employees.

It is a lot harder to lowball folks if they have to be upfront about what they are paying.