March Madness begins this week and with it comes the potential for the economy to lose billions of dollars. A recent survey by sports betting and media brand Action Network that predicts March Madness could cause the U.S. economy to see roughly $20-billion in "lost productivity." That lost productivity can come in a number of forms, from simply being distracted while on the clock to the 40-percent of survey respondents who admit to calling in sick to watch a game. The basketball tournament runs from March 19 through April 6.