07.09.2020 • 17/2020
IWH Bankruptcy Update: Bankruptcies Hit New Low; New Outlook Feature
The number of companies reporting bankruptcy in Germany sank to a new low in August. Associated job losses also declined noticeably, following marked increases in prior months. Published by the Halle Institute for Economic Research, the IWH Bankruptcy Update provides monthly statistics on corporate bankruptcies in Germany. Starting this month, the update will also feature a two-month outlook.
Steffen Müller
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03.07.2020 • 12/2020
IWH Bankruptcy Update: Much more jobs affected by corporate bankruptcy in Germany
The number of corporate bankruptcies declines but, compared to the beginning of the year, the number of affected employees per month recently doubled. This is the latest insight from the IWH Bankruptcy Update provided monthly by the Halle Institute for Economic Research (IWH).
Steffen Müller
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01.07.2020 • 11/2020
New Horizon 2020 project: The Challenge of the Social Impact of Energy Transitions
Funded by the European Commission’s Framework Programme Horizon 2020, the ENTRANCES project recently closed its kick-off meeting with a high scientific and institutional participation, and taking on the challenge of modeling the social impact of the energy transition.
Oliver Holtemöller
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How Forecast Accuracy Depends on Conditioning Assumptions
Carola Engelke, Katja Heinisch, Christoph Schult
IWH Discussion Papers,
No. 18,
2019
Abstract
This paper examines the extent to which errors in economic forecasts are driven by initial assumptions that prove to be incorrect ex post. Therefore, we construct a new data set comprising an unbalanced panel of annual forecasts from different institutions forecasting German GDP and the underlying assumptions. We explicitly control for different forecast horizons to proxy the information available at the release date. Over 75% of squared errors of the GDP forecast comove with the squared errors in their underlying assumptions. The root mean squared forecast error for GDP in our regression sample of 1.52% could be reduced to 1.13% by setting all assumption errors to zero. This implies that the accuracy of the assumptions is of great importance and that forecasters should reveal the framework of their assumptions in order to obtain useful policy recommendations based on economic forecasts.
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Power Generation and Structural Change: Quantifying Economic Effects of the Coal Phase-out in Germany
Christoph Schult, Katja Heinisch, Oliver Holtemöller
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 [6,300; 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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08.05.2019 • 11/2019
Erweiterung des IWH beschlossen
Die Gemeinsame Wissenschaftskonferenz (GWK) von Bund und Ländern hat dem Antrag des Leibniz-Instituts für Wirtschaftsforschung Halle (IWH) auf einen großen strategischen Sondertatbestand in Form einer strategischen Erweiterung zugestimmt. Ab dem Jahr 2020 erhält das Institut eine zusätzliche Grundfinanzierung in Höhe von 1,3 Millionen Euro jährlich. IWH-Präsident Reint E. Gropp zeigt sich außerordentlich erfreut über den großen Erfolg.
Reint E. Gropp
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On DSGE Models
Lawrence J. Christiano, Martin S. Eichenbaum, Mathias Trabandt
Journal of Economic Perspectives,
No. 3,
2018
Abstract
The outcome of any important macroeconomic policy change is the net effect of forces operating on different parts of the economy. A central challenge facing policymakers is how to assess the relative strength of those forces. Economists have a range of tools that can be used to make such assessments. Dynamic stochastic general equilibrium (DSGE) models are the leading tool for making such assessments in an open and transparent manner. We review the state of mainstream DSGE models before the financial crisis and the Great Recession. We then describe how DSGE models are estimated and evaluated. We address the question of why DSGE modelers—like most other economists and policymakers—failed to predict the financial crisis and the Great Recession, and how DSGE modelers responded to the financial crisis and its aftermath. We discuss how current DSGE models are actually used by policymakers. We then provide a brief response to some criticisms of DSGE models, with special emphasis on criticism by Joseph Stiglitz, and offer some concluding remarks.
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Konjunktur aktuell: Aufschwung in Deutschland und in der Welt
Konjunktur aktuell,
No. 5,
2017
Abstract
Zur Jahreswende ist die deutsche Konjunktur nach wie vor kräftig. Das Bruttoinlandsprodukt dürfte im Jahr 2017 um 2,2% zunehmen, und weil in diesem Jahr deutlich weniger Arbeitstage anfallen als zuvor, beträgt die Zuwachsrate kalenderbereinigt sogar 2,5%. Der Aufschwung ist breit aufgestellt. Schon länger treibt die deutliche Zunahme der Beschäftigung die privaten Einkommen, den Konsum und den Wohnungsbau, der außerdem von den sehr nied-rigen Zinsen Rückenwind erhält. Zudem profitieren die deutschen Exporte zurzeit von der schwungvollen internationalen Konjunktur. Auch weil die Geldpolitik im Euroraum vorerst expansiv bleibt, ist damit zu rechnen, dass sich der Aufschwung im Jahr 2018 fortsetzt; die Produktion dürfte dann erneut um 2,2% zunehmen (auch kalenderbereinigt). Die Verbraucherpreisinflation ist in den Jahren 2017 und 2018 mit 1,7% moderat. Zwar nimmt der binnenwirtschaftliche Preisdruck zu, aber die die Effekte des Energiepreisanstiegs vom Jahr 2017 laufen im Jahr 2018 aus, und die Aufwertung des Euro im Sommer 2017 wirkt preissenkend. Die schon gegenwärtig niedrige Arbeitslosenquote geht im kommenden Jahr weiter zurück. Der Finanzierungssaldo des Staates fällt im Jahr 2018 mit 1,3% in Relation zum Bruttoinlandsprodukt fast so hoch wie im Vorjahr aus, wenn man keine neuen finanzpolitischen Maßnahmen unterstellt. Die ostdeutsche Wirtschaft dürfte in den Jahren 2017 und 2018 mit 2,1% bzw. 2,0% etwas langsamer expandieren als die gesamtdeutsche. Weil das Verarbeitende Gewerbe in Ostdeutschland nicht so exportorientiert ist wie das im Westen, profitiert es auch nicht ganz so stark von der gegenwärtig sehr kräftigen internationalen Konjunktur.
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U.S. Monetary-Fiscal Regime Changes in the Presence of Endogenous Feedback in Policy Rules
Yoosoon Chang, Boreum Kwak
Abstract
We investigate U.S. monetary and fiscal policy regime interactions in a model, where regimes are determined by latent autoregressive policy factors with endogenous feedback. Policy regimes interact strongly: Shocks that switch one policy from active to passive tend to induce the other policy to switch from passive to active, consistently with existence of a unique equilibrium, though both policies are active and government debt grows rapidly in some periods. We observe relatively strong interactions between monetary and fiscal policy regimes after the recent financial crisis. Finally, latent policy regime factors exhibit patterns of correlation with macroeconomic time series, suggesting that policy regime change is endogenous.
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