Would you want aspects of your life, perhaps data outside of your health (think driving, finance, etc) to be part of the evaluation (or negotiation) process for your employment?
I'm not so sure it isn't already. My credit has been looked at by the last 3 employers I've had as a condition of an employment background check. And I have been asked during the interview process if I had a valid drivers license.
One might argue it is the industry I'm in (currently govt.) and the that my "driving record" was not thoroughly scrutinized by a simplistic question. However, a candidate with good qualifications having a bad credit rating with no drivers license at all could leave a black cloud on a hiring manager's evaluation process when compared to an OK candidate with good credit and a valid drivers license.
It is the time we live in.