Kind of related, the company I used to work for (before they moved everything to Mexico, thanks Bush1, and CLinton for NAFTA) had a policy that they only hired non-smokers. They didn't test for it, but had the right to fire someone if they later found out that they smoke. People that were employed before this policy were grandfathered, of course. It wasn't a problem for me, since I didn't smoke, and I'm going to guess that it helped with insurance costs not being passed on to me. They later removed this policy, after a couple insurance company changes, and it's amazing how many people just started smoking!