American manufacturing may be starting to bounce back, but the workers responsible for the turnaround aren’t seeing much of a pay off.

U.S. manufacturing output has increased 13 percent over the past five years, according to the Wall Street Journal. But that increase in output has come on the backs of workers. Wages for manufacturing workers remain below 2009 levels and are actually closer to the level they were in 2000.

High unemployment and increased competition abroad has pushed U.S. employers to keep pay low, even as productivity rises, the Wall Street Journal reports. The U.S. currently has the highest percentage of workers in low-wage jobs.

Indeed, factory workers aren't the only ones struggling with stagnent wages. Between March 2011 and March 2012, real wages for all workers fell 0.6 percent.

Watch below to see how productivity is outpacing manufacturing wages: