Changes in Occupational Tasks and Their Association with Individual Wages and Occupational Mobility [German Economic Review; earlier version 2011: SFB 649 DP]
Abstract: This study provides novel evidence on the relevance of task content changes between and within occupations to wage dynamics of occupational changers and stayers. I use individual-level, cross-sectional data featuring tasks performed on the job to compute a measure of proximity of job contents. Then, I merge this measure to a large-scale panel survey to show that occupational changers experience a wage growth that is declining when the accompanying alterations in task contents are big. For occupational stayers, alterations in task contents generate a positive wage component, beyond tenure effect. However, the results are not robust with respect to the choice of proximity measure and over time.
Job matching on connected regional and occupational labor markets [R&R Regional Studies; 2017: IAB DP]
with Franziska Lottmann and Michael Stops
Abstract: Job mobility equilibrates disparities on local labor markets and influences the efficiency of the job matching process. In this paper, we describe a job matching model that allows for simultaneous regional and occupational mobility, predicting corresponding spillover effects on the number of matches. We estimate these spillover effects based on novel administrative German data on the number of matches, unemployed, and vacancies of local labor markets, which we define as distinct occupations in distinct regions. We specify a matching function for these local labor markets with regional spillovers, occupational spillovers, as well as combined regional and occupational spillovers of unemployed and vacancies. To construct these spillover terms, we use information on the proximity between regions and on similarities between occupations in terms of qualification requirements and tasks. We find that regional spillover effects for both vacancies and the unemployed are positive, occupational spillover effects for vacancies are positive and occupational spillover effects for the unemployed are negative. The combined regional and occupational spillover effects for both vacancies and the unemployed are positive. We conclude that neglecting regional, occupational, and combined spillovers leads to biased estimates of job matching efficiency in local labor markets.