As a consultant with a confidentiality agreement in place, you've probably been welcomed to the level of information seen by the CEO and board chair. Levels could, and very likely would, be different for a staff person.
As an executive director, writing grants, I've used the actual salary of my staff, but it's been my experience that access to information in tiers below executive management is usually given on a highly considered need-to-know basis.
Some of our experiences in this area are different.