I don't have any idea why this person would want to get into the legality of this. If you didn't sign up for an open door policy, it is certainly a breach of pr

I don't have any idea why this person would want to get into the legality of this. If you didn't sign up for an open door policy, it is certainly a breach of privacy in an ethical sense but ... You're the one making more money, is this the worst thing imaginable? OK, you colleagues at a startup may be unhappy with this fact but does this really matter that much in reality? On some level, it just seems like you should just take the money not care so much. Sure, if it bothers you, you should bring it up and perhaps the HR person should be disciplined. If it bothers you that much then probably you should move on but I don't think anyone would benefit by bringing discussion of legality here.