People who work outside or who do the heavy lifting for a living are often jealous of office workers. “They have it so easy!” you hear them say, “They never have to worry about the heat, the cold, or being injured.”
While the office temperature is debatable, it is not true that desk jobs carry no risk of injury. The CDC states that in 1999, about 1 million people took time off work to recover from musculoskeletal injuries due to poor economics, costing businesses about $50 billion each year in lost wages and productivity.

Full article: Seize the opportunities ergonomics can mean for your workplace
Source: Safety Best Practices