Innovation, Reallocation, and Growth
American Economic Review,
We build a model of firm-level innovation, productivity growth, and reallocation featuring endogenous entry and exit. A new and central economic force is the selection between high- and low-type firms, which differ in terms of their innovative capacity. We estimate the parameters of the model using US Census microdata on firm-level output, R&D, and patenting. The model provides a good fit to the dynamics of firm entry and exit, output, and R&D. Taxing the continued operation of incumbents can lead to sizable gains (of the order of 1.4 percent improvement in welfare) by encouraging exit of less productive firms and freeing up skilled labor to be used for R&D by high-type incumbents. Subsidies to the R&D of incumbents do not achieve this objective because they encourage the survival and expansion of low-type firms.
Lohnunterschiede zwischen Betrieben in Ost- und Westdeutschland: Ausmaß und mögliche Erklärungsfaktoren. Ergebnisse aus dem IAB-Betriebspanel 2017
The economic situation in German establishments improved even further in 2017. The development of wages, however, reflects this economic growth only partly. Compared to 1997, the wage differential between large and small establishments increased considerably – with substantially lower wages paid in East Germany in general. The wage differential of about 19 percent between East and West Germany can to some extent be explained in a multivariate analysis (Blinder-Oaxaca decomposition) showing that the main cause for the wage gap is the productivity gap between East German and West German establishments; other structural heterogeneities like sector composition, industrial relations and size structure seem not to contribute to an explanation of this gap. The overall positive economic development in Germany is associated with a further growth in total employment and with increased labor market dynamics, especially regarding employee turnover. Turnover rates, however, are very heterogeneous among sectors, ranging from 23 percent in the accommodation and food service sector and less than five percent in public administration. Also the demand for skilled personnel continued to grow. Yet for the first time, not even two thirds of the posted job vacancies could be filled in 2017. With over fifty percent, this non-occupancy quota is particularly high in the construction industry. Also small and very small establishments face serious recruitment problems. The structure of formal occupational skill requirements did not change very much over recent years, but the increasing use of digital technologies changes everyday job requirements and may lead to a rising workload for employees. Looking at the personnel structure in the German economy, a growing share of atypical employment becomes apparent, especially in form of part-time jobs. The proportion of marginal employment remains relatively stable and is comparatively high in sectors with less specific knowledge requirements and strong cyclical and/or seasonal fluctuations like is the case in accommodation and food service sector or personal services sector. Since 2010, the proportion of establishments authorized to provide in-company vocational training has declined constantly and now accounts for 53 percent of the establishments in Germany. About one half of these establishments do actually train apprentices. The share of vacant apprenticeships further increased in 2017 to about one quarter of all apprenticeships offered, in East Germany even to more than one third. As in recent years, the share of establishments supporting further training of their employees remained stable at about fifty percent and the proportion of employees participating in training is still about one third. In East Germany these figures prove to be slightly higher.
14.06.2018 • 14/2018
Current economic outlook: German upswing is slowing down
In summer 2018, the world economy is still rather strong. Dynamics in the euro area, however, have declined markedly, and the cyclical upswing in Germany has almost stalled, due to weaker exports. “Gross domestic product will, according to this forecast, expand by 1.7% in 2018 and by 1.6% in 2019. Growth in East Germany will be about as strong as in Germany as a whole”, says Oliver Holtemöller, head of the Department Macroeconomics and vice president at IWH.
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19.04.2018 • 7/2018
Joint Economic Forecast Spring 2018: Germany’s Economic Experts Raise Forecast Slightly
Berlin, 19 April – Germany’s leading economic experts raised their forecasts for 2018 and 2019 slightly in their Spring Joint Economic Forecast released on Thursday in Berlin. They now expect economic growth of 2.2 percent for this year and 2.0 percent for 2019, versus 2.0 percent and 1.8 percent respectively in their autumn forecast. “The German economy is still booming, but the air is getting thinner as unused capacities are shrinking“, notes Timo Wollmershaeuser, ifo Head of Economic Forecasting. Commenting on the new German government’s economic policy, he adds: “It is precisely when the government’s coffers are full that fiscal policy should reflect the implications of its actions for overall economic stability and the sustainability of public finances. The extension of statutory pension benefits outlined in the coalition agreement runs counter to the idea of sustainability.”
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15.03.2018 • 3/2018
Consistently strong economy, but risks are increasing
The global upswing continues in 2018. The German economy is cur-rently in a boom and is increasingly coming up against capacity limits. “According to our forecast, gross domestic product will expand by 2.2% in 2018; the general government surplus will amount to 1.1% in relation to gross domestic product. Economic growth in East Germany is likely to be slightly below the German growth rate”, says Oliver Holtemöller, head of the Department Macroeconomics and IWH vice president.
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On Mitra's Sufficient Condition for Topological Chaos: Seventeen Years Later
This letter reports an easy extension of Mitra’s “easily verifiable” sufficient condition for topological chaos in unimodal maps, and offers its application to reduced-form representations of two economic models that have figured prominently in the recent literature in economic dynamics: the check- and the M-map pertaining to the 2-sector Robinson–Solow–Srinivasan (RSS) and Matsuyama models respectively. A consideration of the iterates of these maps establishes the complementarity of the useful 2001 condition with the 1982 (LMPY) theorem of Li–Misiurewicz–Pianigiani–Yorke when supplemented by a geometric construction elaborated in Khan–Piazza (2011).