Studies using standard unit-root tests generally cannot reject the hypothesis of a unit root in unemployment rates. These findings have been interpreted as supporting the hysteresis hypothesis. We demonstrate that the failure to reject the null may be due to the low power of the tests. We...

Existing studies using standard unit-root tests generally cannot reject the null hypothesis of a unit root in unemployment rates. These findings have been interpreted as support for the hysteresis hypothesis. In this paper, we analyze a panel of unemployment rates of fifteen OECD countries by...