corporations are increasingly focusing on keeping employees healthy rather than helping them get well. they are investing in wellness programs at record rates, and such programs appear to be paying off. a four-year study of fifteen thousand Control Data employees showed that employees who participated in only limited exercise spent 114 percent more on health insurance claims than did coworkers who exercised more. smokers and obese workers also had higher medical claims. Control Data , which has had its Stay Well program in place since the early 1980s, now markets its program to other organizations such as Philip Morris and the National Basketball Association.