This Labor Day, meet America’s newest union-in-the-making

Before our nation's Labor Day tradition began in the 1880s, laborers commonly logged 70-hour workweeks in dangerous conditions -- until they organized to change that. Their unions eventually created the work-life balance we consider the norm today: a 40-hour workweek and two-day weekend, a minimum wage and safe working conditions. Still, there's one group of workers who, this past year, recorded 56-hour workweeks with zero days off.