Despite a low unemployment rate, wage growth in the U.S. was negligible during the 2013-2015 period. Conventional linear models of the relationship between wages and unemployment, the so- called wage Phillips curve (WPC), and previous models of the WPC that rely on regime-switching driven only...

We examine the relationship between wage inflation and the unemployment rate in the U.S. economy for the 1964-2014 period by means of a three-regime threshold regression model. The estimated threshold parameters suggest that this relationship changes when the unemployment rate transitions...