Overexertion has long been among the leading causes of nonfatal workplace injuries, and attempts to combat it continue to be a burden on employers and their pocketbooks. An estimated 3.5 million overexertion injuries occur every year, most of which are from excessive lifting, lowering, pushing, pulling or carrying. Back injuries are the most common form of overexertion in the workplace and can result in huge costs. According to a 2010 report from the Boston-based Liberty Mutual Research Institute for Safety, in 2008, overexertion cost businesses $13.4 billion in direct workers’ compensation costs – accounting for more than 25 percent of the overall $53.4 billion national burden.
via 6 11 Stop the Strain.