No, Fantasy Football does not improve workplace productivity. From the article:
During the National Football League regular season, nearly 37 million people spend an average of 50 minutes a week at work managing their fantasy teams comprised of real-life players tallying points based on statistical performance, according to outplacement consultants Challenger, Gray & Christmas, Inc. Fantasy sports ranks with shopping on eBay Inc.’s Web auction site and online poker as the biggest waste of productivity at the workplace, said John Challenger, CEO of the consulting firm.
As an avid Fantasy Football player, if they are spending only 50 minutes a week on their team, they are not going to win their league.
I mean, what a colossal waste of time.