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Dr. André Diegmann

Dr. André Diegmann
Aktuelle Position

seit 3/21

Leiter der Forschungsgruppe Betriebliche Dynamiken und Beschäftigungsergebnisse

Leibniz-Institut für Wirtschaftsforschung Halle (IWH)

seit 1/20

Mitglied der Abteilung Arbeitsmärkte

Leibniz-Institut für Wirtschaftsforschung Halle (IWH)

Forschungsschwerpunkte
  • empirische Arbeitsmarktökonomik
  • Firmendynamik
  • politische Ökonomie
  • Economics of Crime

André Diegmann ist seit Januar 2020 wissenschaftlicher Mitarbeiter in der Abteilung Arbeitsmärkte und seit Juni 2020 Junior Research Associate am Zentrum für Europäische Wirtschaftsforschung (ZEW). Er forscht zu den Themen angewandte Mikroökonometrie, Arbeitsmarktökonomik und Finanzwissenschaften.

André Diegmann studierte an der Universität Kassel und promovierte an der Universität Mannheim. Bevor er zum IWH kam, war er am ZEW, IAB sowie beim Sachverständigenrat zur Begutachtung der gesamtwirtschaftlichen Entwicklung tätig.

Ihr Kontakt

Dr. André Diegmann
Dr. André Diegmann
- Abteilung Arbeitsmärkte
Nachricht senden +49 345 7753-873 Persönliche Seite

Publikationen

Zitationen
293

Preferred Field of Study and Academic Performance

Francesco Berlingieri André Diegmann Maresa Sprietsma

in: Economics of Education Review, Vol. 95 (August), 2023

Abstract

This paper investigates the impact of studying the first-choice university subject on dropout and switching field of study for a cohort of students in Germany. Using detailed survey data, and employing an instrumental variable strategy based on variation in the local field of study availability, we provide evidence that students who are not enrolled in their preferred field of study are more likely to change their field, delay graduation and drop out of university. The estimated impact on dropout is particularly strong among students of low socio-economic status and is likely to be driven by lower effort and motivation.

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The Gender Reveal: The Effect of Sons on Young Fathers’ Criminal Behavior and Labor Market Activities

Kabir Dasgupta André Diegmann Tom Kirchmaier Alexander Plum

in: Labour Economics, Vol. 78 (October), 2022

Abstract

Based on New Zealand’s administrative court charges data, we document child gender-specific differences in future criminal behavior of young fathers. The deterrent impact of having a son on the future likelihood of receiving convictions persists for as long as ten years post-childbirth. Utilizing population-wide monthly tax registers and Census data, we provide key insights into the role model hypothesis. We show that young fathers with a son have (i) a higher likelihood of being in employment, (ii) higher wages and salaries, (iii) lower benefit dependency, (iv) better qualification, and (v) a higher likelihood of being in a partnered relationship.

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The Place-based Effects of Police Stations on Crime: Evidence from Station Closures

Sebastian Blesse André Diegmann

in: Journal of Public Economics, Vol. 207 (March), 2022

Abstract

Many countries consolidate their police forces by closing down local police stations. Police stations represent an important and visible aspect of the organization of police forces. We provide novel evidence on the effect of centralizing police offices through the closure of local police stations on crime outcomes. Combining matching with a difference-in-differences specification, we find an increase in reported car theft and burglary in residential properties. Our results are consistent with a negative shift in perceived detection risks and are driven by heterogeneous station characteristics. We can rule out alternative explanations such as incapacitation, crime displacement, and changes in police employment or strategies at the regional level. We argue that criminals are less deterred due to a lower visibility of the local police.

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Arbeitspapiere

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Off the Labor Supply Curve: The Zero Employer Size Wage Effect Within Large Firms

André Diegmann Steffen Müller Benjamin Schoefer

in: IWH Discussion Papers, Nr. 8, 2026

Abstract

We revisit the employer size wage effect (ESWE) – arguably the most basic and influential departure from the law of one price for labor. Our main result is that this canonical fact disappears completely across establishments within the same firm, even though they operate in different local labor markets. We uncover and dissect this fact by including a firm fixed effect in otherwise standard cross-sectional regressions of wages on establishment size. We implement this demanding specification in population-wide triple-linked firm-establishment-employee data in Germany. This result is new in the ESWE literature (for which our paper also provides the first systematic meta-analysis). This wage-size decoupling is hard to square with the view that employment is determined along a finitely elastic employerspecific labor supply curve – i.e., employers pay exactly the minimum needed for the quantity of labor, but no more – the foundation of the monopsony view. By contrast, large multi-establishment firms (MEF) appear to hire off their labor supply curves (or those curves are very elastic), pay wage premia above the monopsonistic minimum, and leave excess labor supply. We find some evidence for a reemergence of the ESWE within low-premium MEFs. Overall, at least for the 25% of German employment in large firms for which the ESWE disappears, wage setting and employment determination may be better accounted for by alternative models, namely accommodating above-market-clearing wage premia and rationing of labor supply, such as efficiency wage theories.

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Patents, Firm Rents, and Worker Compensation: Causal Evidence from Quasi-random Patent Allocation

Afroza Alam André Diegmann

in: IWH Discussion Papers, Nr. 6, 2026

Abstract

This paper provides new causal evidence on how patent allowances affect firms and their employees based on quasi-random assignment of patent applications to examiners. Exploiting employer-employee records with newly linked German firm data and web-scraped patent documents, we show that patent-induced shocks reduce firm exit, improve productivity, and increase wages, with rent-sharing elasticities between 0.10 and 0.21. Wage gains are broadly observed across occupational tasks, with high heterogeneity: managers benefit disproportionately in publicly traded firms, whereas broader wage increases accrue to workers in non-traded firms. Our findings highlight the role of institutional features and firm organization in shaping how rents are shared.

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Do Politicians Affect Firm Outcomes? Evidence from Connections to the German Federal Parliament

André Diegmann Laura Pohlan Andrea Weber

in: IWH Discussion Papers, Nr. 15, 2024

Abstract

We examine how connections to German federal parliamentarians influence firm dynamics using a novel dataset linking politicians and election candidates to the universe of firms. To identify the causal effects of political access, we exploit (i) new appointments to the company leadership team and (ii) discontinuities around the marginal seat of party election lists. Results reveal that political connections reduce firm exits and gradually increase employment growth, with heterogeneous productivity effects depending on the political mandate. Incorporating data on credit ratings, subsidies, and procurement contracts allows us to identify the mechanisms driving the effects over the politician’s career.

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