Terminating employees isn’t nearly as simple as Donald Trump makes it look on “The Apprentice,” particularly when employees’ debilitating mental health problems prevent them from performing satisfactorily. Such instances may be on the rise as the rate of depression in the workplace increases.

According to a new study by the federal Department of Health and Human Services, 7 percent of full-time workers in the U.S. battled depression between 2004 and 2006. Mental illnesses and their related absenteeism cost businesses more than $30 billion annually in lost workplace productivity, the agency concluded.