I was at a company[1] where all the bill rates for a consultant heavy project got leaked by bad permissions on documents. I didn't think much of it at the time because I knew my bill rate (my share was a %). There were a two groups of pretty ticked off people. The employees who were "underpaid"[2] and the consultants who didn't know their bill rate[3]. It is an odd example of what happens when every knows what the company values them at.

1) no longer around in the form they were, but still not saying

2) truthfully, some of the consultant bill rates given the other expenses like taxes & insurance were not that far off the equivalent employee salary - particularly the H1B body shops

3) I think some were getting paid about 25% of their bill rate