Studies have consistently shown that obese employees in the USA are paid less than normal-weight employees doing similar jobs, leading many people to attribute the gap to prejudice against workers based on their appearance. But new research from Stanford University health economists adds another wrinkle to understanding these pay differentials: obese workers are paid less only when they have employer-sponsored health insurance. These findings, just published in a working paper on the Web site of the National Bureau of Economic Research, suggest that employers-recognizing that obese workers are likely to have higher medical costs-compensate with lower pay for them. Given...