This paper focuses on tenure driven productivity dynamics of a firm-worker match as a potential explanation of "unemployment volatility puzzle". We let new matches and continuing jobs differ by their productivity levels and by their sensitivity to aggregate productivity shocks. As a result, new...

A labor matching model with nominal rigidities can match short-run movements in labor's share with some success. However, it cannot explain much of the behavior of employment, vacancies, and job flows in postwar US data without resorting to additional shocks beyond monetary policy and...

We document substantial cross-sectional heterogeneity of German establishments' real wage cyclicality over the business cycle. While wages of the median establishment are moderately procyclical, 36 percent of establishments have countercyclical wages. We estimate a negative connection between...

We document substantial cross-sectional heterogeneity of German establishments' real wage cyclicality over the business cycle. While wages of the median establishment are moderately procyclical, 36 percent of establishments have countercyclical wages. We estimate a negative connection between...

Using the new AWFP dataset that covers all German establishments, we document a substantial cross-sectional heterogeneity of establishments' average real wages over the business cycle. While the median establishments' real wages are procyclical, there is a large fraction of establishments with...

Although the quantitative relationship between employment cyclicality and wage cyclicality is central for the dynamics of macroeconomic models, there is little empirical evidence on this topic. We use the German AWFP dataset to document that wage cyclicalities are very heterogeneous across...

We propose procedures for estimating the time-dependent transition matrices for the general class of finite nonhomogeneous continuous-time semi-Markov processes. We prove the existence and uniqueness of solutions for the system of Volterra integral equations defining the transition matrices,...

The paper examines the application of semi-Markov models to the phenomenon of earthquakes in Tehran province. Generally, earthquakes are not independent of each other, and time and place of earthquakes are related to previous earthquakes; moreover, the time between earthquakes affects the...