The Bureau of Labor Statistics estimates that approximately 3.3 million serious work-related injuries and about 4,300 fatalities occurred in 2009. The human cost of preventable workplace injuries and deaths is incalculable. However, according to the 2010 Liberty Mutual Workplace Safety Index, the direct cost of the most disabling workplace injuries and illnesses in 2008 amounted to $53.42 billion in U.S. workers compensation costs, more than one billion dollars per week.