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Refereed essays Web of Science
Our article investigates the impact of vertical integration (without foreclosure) on innovation. We compare cases where either (i) two manufacturers or (ii) a manufacturer and a vertically integrated retailer invest. Then, the independent manufacturer(s) and the retailer bargain over nonlinear contracts before selling to consumers. We show that vertical integration always increases the incentives to ...
In:
Journal of Economics and Management Strategy
(2026), im Ersch. [online first: 2025-08-12]
| Claire Chambolle, Morgane Guignard
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Refereed essays Web of Science
We develop a theory of postacquisition integration that distinguishes between one-way (acquirer-only) and two-way (mutual) effort strategies. We argue that the method of payment—cash versus shares—may serve as an ex ante commitment mechanism to a particular integration strategy, where cash deals align with unilateral effort, and share deals induce mutual engagement. Using transaction-level mergers ...
In:
Journal of Economics and Management Strategy
(2026), im Ersch. [2025-08-20]
| Albert Banal-Estañol, Joseph A. Clougherty, Jo Seldeslachts, Florian Szücs
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Refereed essays Web of Science
In the fight against antibiotic resistance, reducing antibiotic consumption while preserving healthcare quality presents a critical health policy challenge. We investigate the role of practice styles in patients’ antibiotic intake using exogenous variation in patient-physician assignment. Practice style heterogeneity explains 49% of the differences in overall antibiotic use and 83% of the differences ...
In:
Journal of Human Resources
(2026), im Ersch. [online first: 2024-05-08]
| Shan Huang, Hannes Ullrich
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Refereed essays Web of Science
This paper studies the impact of generative artificial intelligence (AI) technologies on the demand for online freelancers using a large data set from a leading global freelancing platform. We identify the types of jobs that are more affected by generative AI and quantify the magnitude of the heterogeneous impact. Our findings indicate a 21% decrease in the number of job posts for automation-prone ...
In:
Management Science
71 (2025), 10, S. 8097-8993
| Jonas Hannane, Ozge Demirci, Xinrong Zhu
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Refereed essays Web of Science
We provide an evaluation of the impact of German public subsidy schemes in municipalities of Bavaria and Lower Saxony aimed at supporting the deployment of basic broadband infrastructure in rural Germany. Such subsidies are subject to state aid control by the European Commission and may only be granted if the potential market failure is addressed without distorting competition. We first analyse the ...
In:
Journal of the European Economic Association
23 (2025), 6, S. 2289–2337
| Tomaso Duso, Mattia Nardotto, Jo Seldeslachts
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Refereed essays Web of Science
Common ownership - where several firms are (partially) owned by the same investors - and its impact on product market competition has recently drawn much attention. This paper focuses on its implications for market entry. We consider the entry decisions of generic pharmaceutical firms into drug markets that are opened up by the end of regulatory protection and which were previously dominated by a single ...
In:
American Economic Journal: Microeconomics
17 (2025), 4, S. 260–327
| Melissa Newham, Jo Seldeslachts, Albert Banal-Estanol
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Refereed essays Web of Science
We analyse variation in firm performance as a function of the international diversification of ICT imports by firms. Drawing on administrative data from 2010 and 2014 on nearly 4000 German manufacturing firms, we find that firms with ICT sourcing that is diversified across multiple countries perform better than similar, less-diversified firms. This finding holds true for two performance metrics (value ...
In:
Economics of Innovation and New Technology
34 (2025), 1, S. 94-116
| Alexander Schiersch, Irene Bertschek, Thomas Niebel
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Refereed essays Web of Science
The Covid-19 pandemic caused a global economic crisis, leading governments to provide substantial State aid to support firms. This paper examines the effectiveness of Covid-related financial support in Spain and Italy, focusing on its impact on firm recovery. Using a difference-in-differences (DiD) approach combined with propensity score weighting, it compares outcomes of similar firms receiving aid ...
In:
Journal of Economic Behavior & Organization
240 (2025), 107339, 30 S.
| Giulia Canzian, Elena Crivellaro, Tomaso Duso, Antonella Rita Ferrara, Alessandro Sasso, Stefano Verzillo
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Refereed essays Web of Science
We employ a control function methodology, complemented by various identification strategies, to causally estimate the heterogeneous effects of broadband availability on firms’ total factor productivity (TFP) across 46 two-digit manufacturing and service industries in Germany from 2010 to 2015. Throughout this period, the availability of broadband, defined as access to transmission rates of at least ...
In:
Journal of Economic Behavior & Organization
237 (2025), 107133, 18 S.
| Tomaso Duso, Mattia Nardotto, Alexander Schiersch
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Refereed essays Web of Science
This paper analyzes three key labor market trends – structural change, servitization, and skill-biased change – using German data from 1975 to 2017. Through a decomposition analysis, we discern their individual impacts on employment shifts, revealing their distinct roles in the German labor market’s evolution. Servitization and skill-biased change significantly influence employment growth alongside ...
In:
Labour Economics
97 (2025), 102778, 16 S.
| Dominik Boddin, Thilo Kroeger