Use it or lose it is an open invitation to many to abuse it or lose it. The only solution that won't involve overly invasive inquiries into your personal health is to convert to a system which most airlines use. A bank system where you earn your sick time and it gets paid to you just like anything else. Can we please stop the insanity?

Guy you're flying with is sick and won't call in? Call in for him. No need to put up with that B.S..

Oh, and get ready for a wave of retirements if we do convert to that system.