Hospital employees are less healthy and account for more health care costs than the general population, troubling statistics that have Michigan hospitals rethinking the way they do business. Costs for medical care and prescription drugs were 9 percent higher among hospital employees than the U.S. workforce at large, according to a national study. The study analyzed health care claims data for 350,000 hospital employees and their dependents. Hospital employees' admission rates were 46 percent higher for obesity, 20 percent higher for depression and 12 percent higher for asthma compared to the general population.