19.02.2026 • 4/2026
Eine Abschaffung von Minijobs würde die Nettoeinkommen der Betroffenen reduzieren
Aktuell wird diskutiert, Minijobs schrittweise in reguläre sozialversicherungspflichtige Beschäftigungsverhältnisse zu überführen. Nach Berechnungen des Leibniz-Instituts für Wirtschaftsforschung Halle (IWH) würde dies bei etwa vier Millionen betroffenen Minijobbern Zusatzeinnahmen der Sozialversicherungen in Höhe von 4,5 Milliarden Euro im Jahr 2026 zulasten der Nettoeinkommen der Betroffenen bedeuten.
Oliver Holtemöller
Birgit Schultz
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DPE Courses Archive
DPE Course Programme Archive 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2026 IWH-DPE Elective Course Firm Dynamics & Productivity Growth Lecturers:…
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Archive
Media Response Archive 2021 2020 2019 2018 2017 2016 December 2021 IWH: Ausblick auf Wirtschaftsjahr 2022 in Sachsen mit Bezug auf IWH-Prognose zu Ostdeutschland: "Warum Sachsens…
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Church Membership and Economic Recovery: Evidence from the 2005 Hurricane Season
Iftekhar Hasan, Stefano Manfredonia, Felix Noth
Economic Journal,
Vol. 134 (664),
2024
Abstract
This paper investigates the critical role of church membership in the process of economic recovery after high-impact natural disasters. We document a significant adverse treatment effect of the 2005 hurricane season in the Southeastern United States on establishment-level productivity. However, we find that establishments in counties with higher rates of church membership saw a significantly stronger recovery in terms of productivity for 2005–10. We also show that church membership is correlated with post-disaster entrepreneurship activities and population growth.
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Gesamtwirtschaftliche Effekte von Fußball-Meisterschaften: Die WM 2006 und die EM 2024 in Deutschland
Andrej Drygalla, Katja Heinisch, Oliver Holtemöller
Konjunktur aktuell,
No. 2,
2024
Abstract
Fußball-Welt- und Europameisterschaften sind große gesellschaftliche Ereignisse. Gesamtwirtschaftlich fallen sie in großen Volkswirtschaften mit bestehender Sport- und Verkehrsinfrastruktur und vorhandenen Kapazitäten im Gastgewerbe allerdings kaum ins Gewicht. In diesem Beitrag werden Studien zu den ökonomischen Effekten von Sportgroßveranstaltungen zusammengefasst, die wirtschaftlichen Effekte der Fußball-Weltmeisterschaft 2006 in Deutschland untersucht und daraus die zu erwartenden gesamtwirtschaftlichen Effekte der Fußball-Europameisterschaft 2024 in Deutschland abgeleitet. Die Bauaktivität in den Spielorten nimmt im Vorfeld der Meisterschaften zu; Effekte auf das Gastgewerbe gibt es hingegen kaum – vermutlich vor allem aufgrund von Verdrängungseffekten. Insgesamt war die gesamte nominale Bruttowertschöpfung im WM-Jahr 2006 in den Spielorten gut 1% höher als ohne die WM zu erwarten gewesen wäre; in realer Rechnung ist insgesamt kein signifikanter Effekt zu beobachten.
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IWH Retreat Kick-off
IWH Retreat: Kick-off Meeting from Oliver Holtemöller, April 19, 2022 Dear all, On 08 and 09 June 2022, our retreat at Schwielowsee near Potsdam will take place. The motto is…
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Firm Social Networks, Trust, and Security Issuances
Ming Fang, Iftekhar Hasan, Zenu Sharma, An Yan
European Journal of Finance,
Vol. 28 (4),
2022
Abstract
We observe that public firms are more likely to issue seasoned stocks rather than bonds when theirs boards are more socially-connected. These connected issuers experience better announcement-period stock returns and attract more institutional investors. This social-connection effect is stronger for firms with severe information asymmetry, higher risk of being undersubscribed, and more visible to investors. Our conjecture is this social-network effect is driven by trust in issuing firms. Given stocks are more sensitive to trust, these trusted firms are more likely to issue stocks than bonds. Trustworthiness plays an important role in firms’ security issuances in capital markets.
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Names and Behavior in a War
Štěpán Jurajda, Dejan Kovač
Journal of Population Economics,
Vol. 34 (1),
2021
Abstract
We implement a novel empirical strategy for measuring and studying a strong form of nationalism—the willingness to fight and die in a war for national independence—using name choices corresponding to a previous war leader. Based on data on almost half a million soldiers, we first show that having been given a first name that is synonymous with the leader(s) of the Croatian state during World War II predicts volunteering for service in the 1991–1995 Croatian war of independence and dying during the conflict. Next, we use the universe of Croatian birth certificates and the information about nationalism conveyed by first names to suggests that in ex-Yugoslav Croatia, nationalism rose continuously starting in the 1970s and that its rise was curbed in areas where concentration camps were located during WWII. Our evidence on intergenerational transmission of nationalism is consistent with nationalist fathers purposefully reflecting the trade-off between within-family and society-wide transmission channels of political values. We also link the nationalist values we proxy using first name choices to right-wing voting behavior in 2015, 20 years after the war.
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The Impact of Social Capital on Economic Attitudes and Outcomes
Iftekhar Hasan, Qing He, Haitian Lu
Journal of International Money and Finance,
Vol. 108 (November),
2020
Abstract
This article traces the extant literature on the impact of social capital on economic attitudes and outcomes. Special attention is paid to clarify conceptual ambiguities, measurement techniques, channels of influence, and identification strategies. Insights derived from the literature are then used to analyze the marketplace lending industry in China, where the size of the peer-to-peer (P2P) lending market is larger than that of the rest of the world combined. Ironically, approximately two-thirds of these online P2P lending platforms have failed. Empirical evidence from the monthly operating data of 735 lending platforms and transaction level data from one prominent platform (Renrendai) shows that platforms in provinces with high social capital have low risk of failure, and borrowers in provinces with high social capital can borrow at low interest rate and are less likely to default. We also provide observations to guide future economic research on social capital.
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Trust in Banks
Zuzana Fungáčová, Iftekhar Hasan, Laurent Weill
Journal of Economic Behavior and Organization,
Vol. 157,
2019
Abstract
Trust in banks is considered essential for an effective financial system, yet little is known about what determines trust in banks. Only a handful of single-country studies discuss the topic, so this paper aims to fill the gap by providing a cross-country analysis on the level and determinants of trust in banks. Using World Values Survey data covering 52 countries during the period 2010–2014, we observe large cross-country differences in trust in banks and confirm the influence of several sociodemographic indicators. Our main findings include: women tend to trust banks more than men; trust in banks tends to increase with income, but decrease with age and education; and access to television enhances trust, while internet access erodes trust. Additionally, religious, political, and economic values affect trust in banks. Notably, religious individuals tend to put greater trust in banks, but differences are observed across denominations. The holding of pro-market economic views is also associated with greater trust in banks.
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