Again it's a two way street. I can't remember that I ever promised anything to any employee that I didn't follow through on and I certainly have never taken anything away from anyone.
As an employer one thing that is remarkable to me is that if every resume or every potential employee being interviewed is correct about how good they are- Wow would we have all unbelievable successful companies. To me, that is their upfront promise to a company of what they will bring to the table. Unfortunately, what most bring is not what was reflected in their resume or the interview.
The other amazing thing to me is this. Can you imagine if the person being interviewed had the same attitude and respect 3 or 4 years after they were hired as they did in the interview? What I want to know is what changed?