Management Opposition, Strikes and Union Threat
Patrick Nüß
IWH Discussion Papers,
Nr. 17,
2025
Abstract
I estimate management opposition to unions in terms of hiring discrimination in the German labor market. By sending 13,000 fictitious job applications, revealing union membership in the CV and pro-union sentiment via social media accounts, I provide evidence for hiring discrimination against union supporters. Callback rates are on average 15% lower for union members. Discrimination is strongest in the presence of a high sectoral share of union members and large firm size. I further explore variation in regional and sectoral strike intensity over time and find suggestive evidence that discrimination increases if a sector is exposed to an intense strike. Discrimination is positively associated with the sectoral share of firms that voluntarily orientate wages to collective agreements. These results indicate that hiring discrimination can be explained by union threat effects.
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Climate Change Economics in Vietnam: Redefining Economic Impact
Christian Otto, Christoph Schult, Thomas Vogt
IWH Discussion Papers,
Nr. 15,
2025
Abstract
Vietnam, a lower-middle-income economy, faces severe climate risks from heat waves, sea-level rise, and tropical cyclones, which are expected to intensify under ongoing global warming. Using a dynamic general equilibrium model, we analyze economic transition dynamics from 2015 to 2100, incorporating heat-induced labor productivity losses, agricultural land loss, and cyclone-related property damage. We compare a Paris-compatible scenario limiting warming to below 2 °C with a high-emission scenario reaching 4–5 °C. While output and investment impacts remain highly uncertain and statistically indistinguishable across scenarios until 2100, consumption losses are significantly larger under high emissions, mainly driven by heat-related productivity declines, with cyclones contributing most to uncertainty. These findings underscore the importance of considering multiple impact channels beyond output damages in climate-development research.
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13.03.2025 • 10/2025
Konjunktur aktuell: Zeitenwende für die deutsche Wirtschaft?
Die außenpolitischen Rahmenbedingungen haben sich mit den drohenden Handelskriegen und der Verschlechterung der Sicherheitslage in Europa grundsätzlich geändert. Die deutsche Politik schafft mit weitreichenden Änderungen an der Schuldenbremse die Voraussetzungen für schuldenfinanzierte zusätzliche Verteidigungsaufgaben. Das bringt für die deutsche Wirtschaft große Risiken, daneben aber auch Chancen mit sich. Derweil ist die Konjunktur weiter im Abschwung. Nach der Frühjahrsprognose des Leibniz-Instituts für Wirtschaftsforschung Halle (IWH) dürfte das Bruttoinlandsprodukt (BIP) im Jahr 2025 etwa so hoch sein wie im Vorjahr und erst im Jahr 2026 nennenswert zulegen, u. a. weil die Unsicherheit über die deutsche Wirtschaftspolitik nach der Regierungsbildung abnehmen dürfte, sodass die Sparquote der privaten Haushalte wieder etwas zurückgehen wird und die schuldenfinanzierten staatlichen Mehrausgaben allmählich nachfragewirksam werden. Die IWH-Konjunkturforscher prognostizieren für 2025 einen BIP-Zuwachs von 0,1%. Im Dezember waren sie noch von einem Zuwachs von 0,4% für 2025 ausgegangen. Ähnlich sind die Aussichten für Ostdeutschland, wo die Produktion allerdings, anders als in Deutschland insgesamt, im Jahr 2024 leicht gestiegen sein dürfte.
Oliver Holtemöller
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Reassessing EU Comparative Advantage: The Role of Technology
Filippo di Mauro, Marco Matani, Gianmarco Ottaviano
IWH-CompNet Discussion Papers,
Nr. 2,
2024
Abstract
Based on the sufficient statistics approach developed by Huang and Ottaviano (2024), we show how the state of technology of European industries relative to the rest of the world can be empirically assessed in a way that is simple in terms of computation, parsimonious in terms of data requirements, but still comprehensive in terms of information. The lack of systematic cross-industry correlation between export specialization and technological advantage suggests that standard measures of revealed comparative advantage only imperfectly capture a country’s technological prowess due to the concurrent influences of factor prices, market size, markups, firm selection and market share reallocation.
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Reassessing EU Comparative Advantage: The Role of Technology
Filippo di Mauro, Marco Matani, Gianmarco Ottaviano
IWH Discussion Papers,
Nr. 26,
2024
Abstract
Based on the sufficient statistics approach developed by Huang and Ottaviano (2024), we show how the state of technology of European industries relative to the rest of the world can be empirically assessed in a way that is simple in terms of computation, parsimonious in terms of data requirements, but still comprehensive in terms of information. The lack of systematic cross-industry correlation between export specialization and technological advantage suggests that standard measures of revealed comparative advantage only imperfectly capture a country’s technological prowess due to the concurrent influences of factor prices, market size, markups, firm selection and market share reallocation.
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Information about Inequality in Early Child Care Reduces Polarization in Policy Preferences
Henning Hermes, Philipp Lergetporer, Fabian Mierisch, Guido Schwerdt, Simon Wiederhold
Journal of Economic Behavior and Organization,
December
2024
Abstract
We investigate public preferences for equity-enhancing policies in access to early child care, using a survey experiment with a representative sample of the German population (n ≈ 4, 800). We observe strong misperceptions about migrant-native inequalities in early child care that vary by respondents’ age and right-wing voting preferences. Randomly providing information about the actual extent of inequalities has a nuanced impact on the support for equity-enhancing policy reforms: it increases support for respondents who initially underestimated these inequalities, and tends to decrease support for those who initially overestimated them. This asymmetric effect leads to a more consensual policy view, substantially decreasing the polarization in policy support between under- and overestimators. Our results suggest that correcting misperceptions can align public policy preferences, potentially leading to less polarized debates about how to address inequalities and discrimination.
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Medienecho
Medienecho November 2025 Oliver Holtemöller: Großer Teil der Kohlemittel ist verplant in: Magdeburger Volksstimme, 06.11.2025 Oliver Holtemöller: Geldregen für Kohlerevier: Warum…
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Neues Gutachten: Wohin die Kohlemilliarden fließen Rund 41 Milliarden Euro erhalten die Regionen, die vom Kohleausstieg betroffen sind. Wird das Geld sinnvoll genutzt? Ein neues…
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Archiv
Medienecho-Archiv 2021 2020 2019 2018 2017 2016 Dezember 2021 IWH: Ausblick auf Wirtschaftsjahr 2022 in Sachsen mit Bezug auf IWH-Prognose zu Ostdeutschland: "Warum Sachsens…
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Job Market Candidates
Job Market Candidates Marius Fourné Marius Fourné is a PhD candidate in Economics at the Halle Institute for Economic Research (IWH) and Martin Luther University of…
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