When the U.S. economy emerged from the recession in June 2009, productivity was rising at a fast clip. Companies had spent the downturn cutting jobs and were lean and efficient. Productivity—output per hour worked—jumped 5.5 percent in the fourth quarter from a year earlier as workers did more with less. But as the recovery has chugged on, productivity growth has stalled, averaging less than 1 percent a year since 2011. Workers were actually less efficient in the first quarter of 2014, producing fewer goods and services per hour than they had during the previous quarter.