CHICAGO (Reuters) - The owner of a Michigan company who forced his employees to either quit smoking or quit their jobs said on Wednesday he also wants to tell fat workers to lose weight or else. A ban on tobacco use -- whether at home or at the workplace -- led four employees to quit their jobs last week at Okemos, Michigan-based Weyco Inc., which handles insurance claims. The workers refused to take a mandatory urine test demanded of Weyco's 200 employees by founder and sole owner Howard Weyers, a demand that he said was perfectly legal. "If you don't...