Professor Dr Oliver Holtemöller

Professor Dr Oliver Holtemöller
Current Position

since 3/14

Vice President

Halle Institute for Economic Research (IWH) – Member of the Leibniz Association

since 8/09

Head of the Department of Macroeconomics

Halle Institute for Economic Research (IWH) – Member of the Leibniz Association

since 8/09

Professor of Economics


Martin Luther University Halle-Wittenberg

Research Interests

  • quantitative macroeconomics, business cycles, and forecasting
  • applied econometrics and time series analysis
  • monetary economics
  • macroeconomic policy

Oliver Holtemöller is Professor of Economics at Martin Luther University Halle-Wittenberg and head of the Department of Macroeconomics at the Halle Institute for Economic Research (IWH) since August 2009. Since March 2014, he is also a member of the executive board of the IWH.

Oliver Holtemöller has studied economics, applied mathematics and practical computer science at the Justus-Liebig University in Gießen. He participated in the doctoral programme Applied Microeconomics at the Freie Universität Berlin and at the Humboldt-Universität zu Berlin from 1998-2001 and obtained his doctoral degree from the Freie Universität Berlin in 2001.

From 2001 to 2003, he was a collaborator in the National Research Center Quantification and Simulation of Economic Processes (SFB 373) at the Humboldt-Universität zu Berlin. From 2003 to 2009, he was an Assistant Professor in Economics at RWTH Aachen University.

Your contact

Professor Dr Oliver Holtemöller
Professor Dr Oliver Holtemöller
Leiter - Department Macroeconomics
Send Message +49 345 7753-800 Personal page

Publications

Recent Publications

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Economic Mobility Likely to Increase Significantly after Relaxation – but also Number of COVID-19 Cases

Oliver Holtemöller Malte Rieth

in: IWH Policy Notes, No. 3, 2021

Abstract

In Germany, measures to contain the coronavirus were relaxed in some areas at the beginning of March; in many places, for example, the restrictions on private and public gatherings were eased, and retail stores are increasingly able to receive customers again. The aim of these decisions is to allow for more economic mobility and personal contact between people. However, the frequency of contact is a major factor influencing the rate at which the coronavirus spreads, especially since the relaxations have so far not been accompanied by a systematic testing strategy; and vaccination progress has so far also fallen short of expectations. Estimates based on a model of the relationship between containment measures (Oxford COVID-19 Government Response Tracker, Stringency Index), economic mobility (Google Mobility Data), new corona infections, and deaths with data from 44 countries suggest that the recent relaxations increase economic mobility by ten percentage points and the number of new infections and deaths in Germany by 25%. Because both continued lockdown and relaxations have significant negative consequences, it is even more important to enable further relaxations through better testing and quarantine strategies and by increasing the pace of vaccination without putting people's health at risk.

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Die veränderten Wettbewerbsbedingungen von Nordrhein-Westfalen durch ein verändertes ‚level-playing-field‘ in den Wirtschaftsbeziehungen zum Vereinigten Königreich und Nordirland

Hans-Ulrich Brautzsch Andrej Drygalla Oliver Holtemöller Martina Kämpfe Axel Lindner

in: IWH Studies, No. 1, 2021

Abstract

Am 31.01.2020 ist das Vereinigte Königreich Großbritannien und Nordirland (Großbritannien) aus der Europäischen Union (EU) ausgetreten. Das Land ist bisher als Handelspartner der nordrhein-westfälischen Wirtschaft von erheblicher Bedeutung gewesen: 2015, im Jahr vor dem britischen Volksentscheid zugunsten eines Austritts, war es mit einem Anteil von 7,7% der drittwichtigste Absatzmarkt für Warenexporte aus Nordrhein-Westfalen, und immerhin 4,6% aller Warenimporte stammten aus Großbritannien. In der vorliegenden Studie werden die Konsequenzen des Brexit für das Land Nordrhein-Westfalen erörtert. Der Fokus liegt dabei auf der kurzen bis mittleren Frist, denn das zentrale Instrument der Analyse, die Input-Output-Rechnung, nutzt Informationen über gegenwärtige Wirtschaftsstrukturen, die sich an die nach dem Austritt Großbritanniens neuen Rahmenbedingungen im Lauf der Zeit anpassen werden. Die Perspektiven für die wirtschaftlichen Beziehungen zwischen Großbritannien und der EU, wie sie sich im Frühjahr 2020 darstellen, werden am Anfang der Studie (Abschnitt 2) skizziert. Daran schließt sich ein Überblick der Literatur zu den wirtschaftlichen Folgen des Brexit für Europa, für Deutschland und für einzelne Regionen an (Abschnitt 3). Das zentrale Kapitel der Studie (Abschnitt 4) beleuchtet die Effekte des Brexit auf die Wirtschaft Nordrhein-Westfalens. Dabei geht es vor allem um den Güterhandel, die Produktion und die Beschäftigung, aber auch um Effekte auf Investitionen und Arbeitsproduktivität. Um auch wichtige indirekte Effekte über Vorleistungsbeziehungen zu erfassen, kommt die Input-Output-Analyse zum Einsatz. Nach einer kurzen Darstellung der Wirtschaftsstruktur Nordrhein-Westfalens und der Handelsverflechtungen zwischen Großbritannien, Deutschland und der EU werden die kurz- bis mittelfristigen Effekte des Brexit auf den Güterhandel, die Produktion und die Beschäftigung in Deutschland und in neun nordrhein-westfälischen Regionen simuliert. An die so erzielten Ergebnisse schließen sich qualitative Überlegungen zu den Effekten auf Investitionstätigkeit und Produktivitätsentwicklung an. In Abschnitt 5 wird diskutiert, ob sich mit dem Brexit nicht auch Chancen für die Wirtschaft Nordrhein-Westfalens bieten. Zu diesem Zweck wird untersucht, in welchen Branchen sowohl Großbritannien als auch Nordrhein-Westfalen bisher innerhalb der EU komparative Vorteile gehabt haben, und ob der Austritt Großbritanniens dort Marktanteilsgewinne der heimischen Wirtschaft ermöglichen könnte. In Abschnitt 6 wird der Frage nachgegangen, welche Instrumente und Maßnahmen von der Politik genutzt werden könnten, um einen fairen und regelbasierten Wettbewerb auf Basis des bisherigen ‚level-playing-field‘ zwischen nordrhein-westfälischen und britischen Unternehmen zu gewährleisten. In einem abschließenden Abschnitt 7 werden die wichtigsten Ergebnisse der Studie zusammengefasst.

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Power Generation and Structural Change: Quantifying Economic Effects of the Coal Phase-out in Germany

Katja Heinisch Oliver Holtemöller Christoph Schult

in: Energy Economics, 2021

Abstract

In the fight against global warming, the reduction of greenhouse gas emissions is a major objective. In particular, a decrease in electricity generation by coal could contribute to reducing CO2 emissions. We study potential economic consequences of a coal phase-out in Germany, using a multi-region dynamic general equilibrium model. Four regional phase-out scenarios before the end of 2040 are simulated. We find that the worst case phase-out scenario would lead to an increase in the aggregate unemployment rate by about 0.13 [0.09 minimum; 0.18 maximum] percentage points from 2020 to 2040. The effect on regional unemployment rates varies between 0.18 [0.13; 0.22] and 1.07 [1.00; 1.13] percentage points in the lignite regions. A faster coal phase-out can lead to a faster recovery. The coal phase-out leads to migration from German lignite regions to German non-lignite regions and reduces the labour force in the lignite regions by 10,100 [6300; 12,300] people by 2040. A coal phase-out until 2035 is not worse in terms of welfare, consumption and employment compared to a coal-exit until 2040.

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Refereed Publications

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Power Generation and Structural Change: Quantifying Economic Effects of the Coal Phase-out in Germany

Katja Heinisch Oliver Holtemöller Christoph Schult

in: Energy Economics, 2021

Abstract

In the fight against global warming, the reduction of greenhouse gas emissions is a major objective. In particular, a decrease in electricity generation by coal could contribute to reducing CO2 emissions. We study potential economic consequences of a coal phase-out in Germany, using a multi-region dynamic general equilibrium model. Four regional phase-out scenarios before the end of 2040 are simulated. We find that the worst case phase-out scenario would lead to an increase in the aggregate unemployment rate by about 0.13 [0.09 minimum; 0.18 maximum] percentage points from 2020 to 2040. The effect on regional unemployment rates varies between 0.18 [0.13; 0.22] and 1.07 [1.00; 1.13] percentage points in the lignite regions. A faster coal phase-out can lead to a faster recovery. The coal phase-out leads to migration from German lignite regions to German non-lignite regions and reduces the labour force in the lignite regions by 10,100 [6300; 12,300] people by 2040. A coal phase-out until 2035 is not worse in terms of welfare, consumption and employment compared to a coal-exit until 2040.

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(Since when) are East and West German Business Cycles Synchronised?

Stefan Gießler Katja Heinisch Oliver Holtemöller

in: Jahrbücher für Nationalökonomie und Statistik, No. 1, 2021

Abstract

We analyze whether, and since when, East and West German business cycles are synchronised. We investigate real GDP, unemployment rates and survey data as business cycle indicators and we employ several empirical methods. Overall, we find that the regional business cycles have synchronised over time. GDP-based indicators and survey data show a higher degree of synchronisation than the indicators based on unemployment rates. However, synchronisation among East and West German business cycles seems to have become weaker again recently.

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The Effects of Fiscal Policy in an Estimated DSGE Model – The Case of the German Stimulus Packages During the Great Recession

Andrej Drygalla Oliver Holtemöller Konstantin Kiesel

in: Macroeconomic Dynamics, No. 6, 2020

Abstract

In this paper, we analyze the effects of the stimulus packages adopted by the German government during the Great Recession. We employ a standard medium-scale dynamic stochastic general equilibrium (DSGE) model extended by non-optimizing households and a detailed fiscal sector. In particular, the dynamics of spending and revenue variables are modeled as feedback rules with respect to the cyclical components of output, hours worked and private investment. Based on the estimated rules, fiscal shocks are identified. According to the results, fiscal policy, in particular public consumption, investment, and transfers prevented a sharper and prolonged decline of German output at the beginning of the Great Recession, suggesting a timely response of fiscal policy. The overall effects, however, are small when compared to other domestic and international shocks that contributed to the economic downturn. Our overall findings are not sensitive to considering fiscal foresight.

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Working Papers

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Exchange Rates and the Information Channel of Monetary Policy

Oliver Holtemöller Alexander Kriwoluzky Boreum Kwak

in: IWH Discussion Papers, No. 17, 2020

Abstract

We disentangle the effects of monetary policy announcements on real economic variables into an interest rate shock component and a central bank information shock component. We identify both components using changes in interest rate futures and in exchange rates around monetary policy announcements. While the volatility of interest rate surprises declines around the Great Recession, the volatility of exchange rate changes increases. Making use of this heteroskedasticity, we estimate that a contractionary interest rate shock appreciates the dollar, increases the excess bond premium, and leads to a decline in prices and output, while a positive information shock appreciates the dollar, decreases prices and the excess bond premium, and increases output.

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Integrated Assessment of Epidemic and Economic Dynamics

Oliver Holtemöller

in: IWH Discussion Papers, No. 4, 2020

Abstract

In this paper, a simple integrated model for the joint assessment of epidemic and economic dynamics is developed. The model can be used to discuss mitigation policies like shutdown and testing. Since epidemics cause output losses due to a reduced labor force, temporarily reducing economic activity in order to prevent future losses can be welfare enhancing. Mitigation policies help to keep the number of people requiring intensive medical care below the capacity of the health system. The optimal policy is a mixture of temporary partial shutdown and intensive testing and isolation of infectious persons for an extended period of time.

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(Since When) Are East and West German Business Cycles Synchronised?

Stefan Gießler Katja Heinisch Oliver Holtemöller

in: IWH Discussion Papers, No. 7, 2019

Abstract

This paper analyses whether and since when East and West German business cycles are synchronised. We investigate real GDP, unemployment rates and survey data as business cycle indicators and employ several empirical methods. Overall, we find that the regional business cycles have synchronised over time. GDP-based indicators and survey data show a higher degree of synchronisation than the indicators based on unemployment rates. However, recently synchronisation among East and West German business cycles seems to become weaker, in line with international evidence.

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