Best thing to do is call the companies directly and ask them!
Some are more strict, some are more relaxed.
Tell them the circumstances of the individual. I know from experience that with Panther, if you have a cardiac history you positively need to take a yearly stress test (from your own physician or theirs) and have it completed before they will put you on as a driver......they won't budge on it at all. I don't think it's their decision, it's with DOT guidelines.