The Ins and Outs of Unemployment in the Long Run: Unemployment Flows and the Natural Rate

Abstract

This paper proposes an empirical method for estimating a long-run trend for the unemployment rate that is grounded in the modern theory of unemployment. I write down an unobserved-components model and identify the cyclical and trend components of the underlying unemployment flows, which in turn imply a time-varying estimate of the unemployment trend, the natural rate. I identify a sharp decline in the outflow rate—the job finding rate—since 2000, which was partly offset by the secular decline in the inflow rate—the separation rate—since the 1980s, implying a relatively stable natural rate, currently at 6 percent.