Productivity growth is flat over the past year. But that's because the gains from the past six months have been offset by declines in previous six months.
Worker productivity is improving partly because economic growth has accelerated. The economy expanded at a 2.8 percent annual rate in the third quarter, up from 2.5 percent in the previous quarter. At the same time, hiring has been only modest.
Still, productivity growth has slowed in the past three years after jumping in the aftermath of the recession. It increased just 1.5 percent in 2012 and 0.5 percent in 2011. Those gains followed much healthier increases of 3.3 percent in 2010 and 3.2 percent in 2009.
Productivity rose faster after the recession because businesses boosted output after slashing their workforces during the downturn.
The Federal Reserve monitors productivity and labor costs for any signs that inflation could pick up. Mild inflation has allowed the Fed to keep short-term interest rates at record lows and to buy bonds to try to keep long-term rates down.