Fatigue and the construction site do not mix, but unfortunately it happens more than we’d all like.  Construction work long and odd hours, with many jobs beginning extremely early in the morning or late at night.  Fatigue not only reduces productivity, but it’s a major safety concern, especially with regards to operating heavy machinery. According to the National Sleep Foundation (sounds like a fantastic place to work, I bet they have an amazing worktime nap schedule), yearly estimates for fatigue caused auto accidents average around 100,000, resulting in approximately 1,550 deaths, 71,000 injuries, and $12.5 billion in monetary losses.