"For every dollar of the almost $950 billion spent on health care benefits, another $0.61 of productivity is lost to illness and injury. Employees covered for sick time, workers' compensation, disability, and family and medical leave benefits are absent about 978 million days due to illness and incur an estimated 540 million lost work days due to presenteeism (underperformance on the job by employees with chronic health conditions). This totals almost 1.5 billion days annually of illness-related absence."