Climate (In)action? The Relationship between CEO Early-Life Experiences and Corporate Climate Policies
Timo Busch, Wiebke Szymczak, Simone A. Wagner
Ecological Economics,
November
2025
Abstract
While the drastic physical impacts of climate change and related natural hazards are increasingly apparent, little is known about the long-term behavioral consequences of climate change-related experiences. Psychological evidence suggests that climate change (CC)-related experiences induce people to make more climate-friendly choices. Building on Upper Echelons Theory and relevant psychological literature, we investigate whether early-life natural hazard experiences of Chief Executive Officers (CEOs) are associated with more climate-friendly policies during their tenure. Our sample covers decisions taken between 1991 and 2018 by 447 US-born CEOs. While we observe an effect of hazard experiences on climate policies, we do not observe the same effect when focusing only on CC-related experiences. This result is robust across different measures of corporate climate performance.
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Management Opposition, Strikes and Union Threat
Patrick Nüß
IWH Discussion Papers,
No. 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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The Effect of Different Saving Mechanisms in Pension Saving Behavior: Evidence from a Life-Cycle Experiment
Martin Angerer, Michael Hanke, Ekaterina Shakina, Wiebke Szymczak
Journal of Risk and Financial Management,
No. 5,
2025
Abstract
We examine how institutional saving mechanisms influence retirement saving decisions under bounded rationality and income risk. Using a life-cycle experiment with habit formation and loss aversion, we test mandatory and voluntary binding savings under deterministic and stochastic income. Voluntary commitment improves saving performance only when income is predictable; under uncertainty, it fails to improve performance. Mandatory savings do not raise total saving, as participants reduce voluntary contributions. These results emphasize the role of income smoothing in enabling behavioral interventions to improve long-term financial outcomes.
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From Rivals to Allies? CEO Connections in an Era of Common Ownership
Dennis Hutschenreiter, Qianshuo Liu
IWH Discussion Papers,
No. 7,
2025
Abstract
Institutional common ownership of firm pairs in the same industry increases the likelihood of a preexisting social connection among their CEOs. We establish this relationship using a quasi-natural experiment that exploits institutional mergers combined with firms’ hiring events and detailed information on CEO biographies. In addition, for peer firms, gaining a CEO connection from a hiring firm’s CEO appointment correlates with higher returns on assets, stock market returns, and decreasing product similarity between companies. We find evidence consistent with common owners allocating CEO connections to shape managerial decisionmaking and increase portfolio firms’ performance.
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Social Connections and Information Leakage: Evidence from Target Stock Price Run-up in Takeovers
Iftekhar Hasan, Lin Tong, An Yan
Journal of Financial Research,
No. 2,
2025
Abstract
Does information leakage in a target's social networks increase its stock price prior to a merger announcement? Evidence reveals that a target with more social connections indeed experiences a higher pre-announcement price run-up. This effect does not exist during or after the merger announcement, or in windows ending two months before the announcement. It is more pronounced among targets with severe asymmetric information, and weaker when the information about the upcoming merger is publicly available prior to the announcement. It is also weaker in expedited deals such as tender offers.
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Inflation und Nachhaltigkeit: Wie sich Inflationssorgen auf den Kauf von Bio-Produkten auswirken
Sabrina Jeworrek, Lena Tonzer, Matti Witte
Wirtschaft im Wandel,
No. 1,
2025
Abstract
Der Klimawandel und die übermäßige Nutzung natürlicher Ressourcen stellen große Herausforderungen für eine nachhaltige Entwicklung auf der Erde dar. Auf Seite der Unternehmen besteht die Herausforderung darin, Wege zu finden, wie sie Ressourcen schonen und Emissionen senken können. Die Verbraucher wiederum haben über ihr Konsumverhalten Einfluss darauf, welche Produkte Unternehmen überhaupt absetzen können. Nachhaltiger Konsum ist somit ein wichtiger Baustein in der grünen Transformation. In einer jüngst als IWH-Diskussionspapier erschienenen Studie wird untersucht, inwiefern Inflationssorgen den Kauf von Bio-Produkten beeinflussen. Gerade in Zeiten stark steigender Preise könnte die Sorge über das eigene Budget die Sorgen über Klimawandel und Nachhaltigkeit in den Hintergrund treten lassen und sich somit negativ auf den Konsum von oft relativ teuren Bio-Produkten auswirken. Die Ergebnisse der Studie basieren auf einer Befragung von rund 1 200 Teilnehmenden sowie einem Feldexperiment zum tatsächlichen Einkaufsverhalten mit circa 500 Teilnehmenden. Die Ergebnisse zeigen, dass gerade Teilnehmende mit vergleichsweise geringerem Umweltbewusstsein und, damit einhergehend, sowieso schon niedrigerem Anteil an nachhaltigen Produkten nochmals erheblich weniger nachhaltige Produkte konsumieren, sobald sie mit Inflationssorgen konfrontiert werden.
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Supply Chain Disruptions and Firm Outcomes
Michael Koetter, Huyen Nguyen, Sochima Uzonwanne
IWH Discussion Papers,
No. 3,
2025
Abstract
This paper examines how firms’ exposure to supply chain disruptions (SCD) affects firm outcomes in the European Union (EU). Exploiting heterogeneous responses to workplace closures imposed by sourcing countries during the pandemic as a shock to SCD, we provide empirical evidence that firms in industries relying more heavily on foreign inputs experience a significant decline in sales compared to other firms. We document that external finance, particularly bank financing, plays a critical role in mitigating the effects of SCD. Furthermore, we highlight the unique importance of bank loans for small and solvent firms. Our findings also indicate that highly diversified firms and those sourcing inputs from less distant partners are less vulnerable to SCD.
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Media Response
Media Response January 2026 Oliver Holtemöller: Wirtschaftskrise - Warum ein Industriestrompreis nicht hilft (Bericht des ARD-Magazins "Plusminus" ab Min 18:38, mit O-Ton von…
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The Causal Impact of Gender Norms on Mothers’ Employment Attitudes and Expectations
Henning Hermes, Marina Krauß, Philipp Lergetporer, Frauke Peter, Simon Wiederhold
IWH Discussion Papers,
No. 28,
2024
Abstract
This field experiment investigates the causal impact of mothers’ perceptions of gender norms on their employment attitudes and labor-supply expectations. We provide mothers of young children in Germany with information about the prevailing gender norm regarding maternal employment in their city. At baseline, over 70% of mothers incorrectly perceive this gender norm as too conservative – the most pronounced misperception among the various gender norms we examine. Our randomized information treatment improves the accuracy of these perceptions, significantly reducing the share of mothers who perceive gender norms as overly conservative. The treatment also shifts mothers’ own labormarket attitudes in a more liberal direction. Leveraging the fact that we assessed attitudes in a prior survey, we show that specifically the shifted attitude is a strong predictor of mothers’ future labor-market participation. Consistently, treated mothers are more likely to plan an increase in their working hours, particularly those with existing support to facilitate their employment.
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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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