Minimum Wages, Productivity, and Reallocation
Mirja Hälbig, Matthias Mertens, Steffen Müller
IWH Discussion Papers,
Nr. 8,
2023
Abstract
We study the productivity effect of the German national minimum wage by applying administrative firm data. At the firm level, we confirm positive effects on wages and negative employment effects and document higher productivity even net of output price increases. We find higher wages but no employment effects at the level of aggregate industry × region cells. The minimum wage increased aggregate productivity in manufacturing. We do not find that employment reallocation across firms contributed to these aggregate productivity gains, nor do we find improvements in allocative efficiency. Instead, the productivity gains from the minimum wage result from within-firm productivity improvements only.
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European Firm Concentration and Aggregate Productivity
Tommaso Bighelli, Filippo di Mauro, Marc Melitz, Matthias Mertens
Journal of the European Economic Association,
Nr. 2,
2023
Abstract
This paper derives a European Herfindahl–Hirschman concentration index from 15 micro-aggregated country datasets. In the last decade, European concentration rose due to a reallocation of economic activity toward large and concentrated industries. Over the same period, productivity gains from an increasing allocative efficiency of the European market accounted for 50% of European productivity growth while markups stayed constant. Using country-industry variation, we show that changes in concentration are positively associated with changes in productivity and allocative efficiency. This holds across most sectors and countries and supports the notion that rising concentration in Europe reflects a more efficient market environment rather than weak competition and rising market power.
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Wirtschaftliche Folgen des Gaspreisanstiegs für die deutsche Industrie
Steffen Müller
Wirtschaft im Wandel,
Nr. 1,
2023
Abstract
Die Gaspreise haben sich in Deutschland infolge des Lieferstopps russischen Erdgases deutlich erhöht, mit möglichen Folgen für die Wettbewerbsfähigkeit der deutschen Industrie. Wir berechnen den Gasverbrauch auf Produktebene für die Zeit vor der Energiekrise mit Hilfe der Mikrodaten der amtlichen Statistik, um zielgenau abschätzen zu können, bei welchen Produkten eine Drosselung der Produktion zur maximalen Gaseinsparung bei minimalen wirtschaftlichen Verlusten führen würde. Die Verwendung von Mikrodaten zeigt, dass die Folgen für Umsatz und Wertschöpfung in der Industrie bei Weitem nicht so negativ ausfallen werden wie von vielen befürchtet.
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Robots, Occupations, and Worker Age: A Production-unit Analysis of Employment
Liuchun Deng, Steffen Müller, Verena Plümpe, Jens Stegmaier
IWH Discussion Papers,
Nr. 5,
2023
Abstract
We analyse the impact of robot adoption on employment composition using novel micro data on robot use in German manufacturing plants linked with social security records and data on job tasks. Our task-based model predicts more favourable employment effects for the least routine-task intensive occupations and for young workers, with the latter being better at adapting to change. An event-study analysis of robot adoption confirms both predictions. We do not find adverse employment effects for any occupational or age group, but churning among low-skilled workers rises sharply. We conclude that the displacement effect of robots is occupation biased but age neutral, whereas the reinstatement effect is age biased and benefits young workers most.
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Climate Change Concerns and Information Spillovers from Socially-connected Friends
Maximilian Mayer
IWH Discussion Papers,
Nr. 2,
2023
Abstract
This paper studies the role of social connections in shaping individuals’ concerns about climate change. I combine granular climate data, region-level social network data and survey responses for 24 European countries in order to document large information spillovers. Individuals become more concerned about climate change when their geographically distant friends living in sociallyconnected regions have experienced large increases in temperatures since 1990. Exploring the heterogeneity of the spillover effects, I uncover that the learning via social networks plays a central role. Further, results illustrate the important role of social values and economic preferences for understanding how information spillovers affect individual concerns.
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Automation with Heterogeneous Agents: The Effect on Consumption Inequality
Tommaso Santini
IWH Discussion Papers,
Nr. 28,
2022
Abstract
In this paper, I study technological change as a candidate for the observed increase in consumption inequality in the United States. I build an incomplete market model with educational choice combined with a task-based model on the production side. I consider two channels through which technology affects inequality: the skill that an agent can supply in the labor market and the level of capital she owns. In a quantitative analysis, I show that (i) the model replicates the increase in consumption inequality between 1981 and 2008 in the US (ii) educational choice and the return to wealth are quantitatively important in explaining the increase in consumption inequality.
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The East-West German Gap in Revenue Productivity: Just a Tale of Output Prices?
Matthias Mertens, Steffen Müller
Journal of Comparative Economics,
Nr. 3,
2022
Abstract
East German manufacturers’ revenue productivity is substantially below West German levels, even three decades after German unification. Using firm-product-level data with product quantities and prices, we analyze the role of product specialization and show that the prominent “extended work bench hypothesis” cannot explain these sustained productivity differences. Eastern firms specialize in simpler product varieties generating less consumer value and being manufactured with less or cheaper inputs. Yet, such specialization cannot explain the productivity gap because Eastern firms are physically less productive for given product prices. Hence, there is a genuine price-adjusted physical productivity disadvantage of Eastern compared to Western firms.
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Productivity, Managers’ Social Connections and the Financial Crisis
Iftekhar Hasan, Stefano Manfredonia
Journal of Banking and Finance,
August
2022
Abstract
This paper investigates whether managers’ personal connections help corporate productivity to recover after a negative economic shock. Leveraging the heterogeneity in the severity of the financial crisis across different sectors, the paper reports that (i) the financial crisis had a negative effect on within-firm productivity, (ii) the effect was long-lasting and persistent, supporting a productivity-hysteresis hypothesis, and (iii) managers’ personal connections allowed corporations to recover from this productivity slowdown. Among the possible mechanisms, we show that connected managers operating in affected sectors foster productivity recovery through higher input cost efficiency and better access to the credit market, as well as more efficient use of labour and capital.
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Fallende Lohnquoten: Die Rolle von Technologie und Marktmacht
Matthias Mertens
Wirtschaft im Wandel,
Nr. 2,
2022
Abstract
Die Lohnquote, definiert als die Summe der Arbeitnehmerentgelte geteilt durch die Gesamtproduktion einer Volkswirtschaft, ist in den letzten 40 Jahren in vielen Ländern gefallen. Das Fallen der Lohnquote besitzt potenziell weitreichende Implikationen für das Ausmaß an Ungleichheit und für den Wohlstand von Arbeitnehmerinnen und Arbeitnehmern. Daneben kann eine fallende Lohnquote auch ein Anzeichen für einen Anstieg der Firmenmarktmacht sein. Anhand von Mikrodaten zum deutschen Verarbeitenden Gewerbe untersucht dieser Artikel, welche Rolle technologischer Wandel und steigende Firmenmarktmacht als Ursachen für das Fallen der Lohnquote spielen. Es zeigt sich, dass technologischer Wandel und ein Anstieg der Firmenmarktmacht, insbesondere auf Arbeitsmärkten, jeweils die Hälfte der fallenden Lohnquote im deutschen Verarbeitenden Gewerbe erklären. Daher können politische Maßnahmen, die Firmenmarktmacht reduzieren, nicht nur eine effizienzsteigernde Wirkung entfalten, sondern, als ein Nebeneffekt, auch den Anteil der Löhne an der Gesamtproduktion erhöhen.
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