As the obesity problem grows, there has been an “explosion of interest” by employers in paying workers to get healthy, says Kevin Volpp, director of the University of Pennsylvania’s Center for Health Incentives. Early studies suggest programs might be most effective when participants risk losing money instead of winning it, The Wall Street Journal reports.

As the obesity problem grows, there has been an “explosion of interest” by employers in paying workers to get healthy, says Kevin Volpp, director of the University of Pennsylvania’s Center for Health Incentives. Early studies suggest programs might be most effective when participants risk losing money instead of winning it, The Wall Street Journal reports.