The government has proposed rules that would allow employers to penalize employees for up to 30% of their health insurance costs if they don’t meet 24 health criteria one of which is the BMI, Body Mass Index. It turns out that the BMI is a very unreliable indicator of health.
From this LA times article, BMI mislabels 54 million Americans as 'overweight' or 'obese,' study says:
“A team of UCLA researchers analyzed data from 40,420 individuals who participated in the 2005-2012 National Health and Nutrition Examination Survey and they found that nearly half (47.4%) of overweight people and 29% of obese people were, from a metabolic standpoint, quite healthy. On the flip side, more than 30% of individuals with “normal” weights were metabolically unhealthy.