Im Sommer 2021 dürfte die weltwirtschaftliche Produktion deutlich zugelegt haben, aber Schließungen von Produktionsanlagen und Häfen vergrößern den Stau im globalen Warenaustausch. Ansteigende Rohstoffpreise schlagen sich v. a. in den USA und im Euroraum in hohen Inflationsraten nieder, doch die Notenbanken werden sich mit dem Kurswechsel Zeit lassen. Dadurch erhält die Wirtschaft in den westlichen Industrieländern weiter Rückenwind seitens der Wirtschaftspolitik. Die Erholung der deutschen Wirtschaft kam im Sommerhalbjahr dank der Impfkampagne und des privaten Konsums gut voran. Wegen steigender Corona-Neuinfektionen und Produktionsengpässen ist dennoch nur mit einem recht schwachen Jahresschlussquartal zu rechnen. Das BIP wird 2021 um 2,2% und 2022 um 3,6% zunehmen.

This paper examines the effect of going public on firm-level employment. To establish a causal effect, we employ a novel data set of private firms to investigate employment growth in IPO firms relative to a group of firms that file for an IPO but subsequently withdraw their offering. We find that employment increases significantly after going public, and the increase is more pronounced in industries with requirements for highly skilled labor and greater dependence on external finance. Improved ability to undertake acquisitions and a strategic shift toward commercialization, rather than agency problems, explain employment growth. Overall, these results highlight the importance of going public for firms' employment policies.

The dissertation examines various factors influencing the financing costs of countries. The euro crisis, commodity prices, and climate change are identified as three key factors, and their empirical significance is examined statistically. Another article deals with the integration of financial markets and its impact on the spread of economic cycles.

Im Sommer 2021 expandiert die weltwirtschaftliche Produktion kräftig, hauptsächlich dank rasch voranschreitender Impfkampagnen in den fortgeschrittenen Volkswirtschaften des Westens. Geld- und Finanzpolitik bleiben dort expansiv, und die konjunkturelle Dynamik wird auch in den kommenden Quartalen hoch sein. In vielen Schwellen- und Entwicklungsländern wird die Pandemie hingegen das ganze Jahr 2021 über noch auf der Wirtschaft lasten. In Deutschland sind die konjunkturellen Aussichten günstig, weil die Corona-Restriktionen nach und nach aufgehoben werden. Das BIP wird 2021 um 3,9% und 2022 um 4,0% zunehmen. Die Produktion in Ostdeutschland dürfte in beiden Jahren um jeweils 3% zulegen.

Human beings do not act in isolation. This particularly holds for economic systems in which workers are employed at firms. In one of the seminal papers in economics, Coase (1937) identifies transaction costs to be the prime economic reason why firms are formed to organize production, and, consequently, transaction costs also explain why workers are employed at firms. At first glance, this appears to be a subtle detail on the organization of economic activity. It has, however, a huge impact on individuals, as this subtle detail also is the reason why the provision of their workforce in the economy is performed through employment at firms.

This paper investigates the impact of international bank flows from G10 lender countries on income inequality in 74 borrower countries over 1999–2013. Specifically, we examine the role of international bank flows contingent upon the Basel 2 capital regulation and the level of financial market development in the borrower countries. First, we find that improvements in the borrower country risk weights due to rating upgrades under the Basel 2 framework significantly increase bank flows, leading to improvements in income inequality. Second, we find that the level of financial market development is also important. We report that a well-functioning financial market helps the poor access credit and thereby reduces inequality. Moreover, we employ threshold estimations to identify the thresholds for each of the financial development measures that borrower countries need to reach before realizing the potential reductions in income inequality from international bank financing.

Climate change projections show that the average global temperature will very likely increase further. Policymakers need to implement suitable mitigation policy measures. This thesis uses dynamic general equilibrium models (DGEs) to analyse the potential economic effects of mitigation policy. Chapter 2 documents the forecasting performance of standardly estimated macroeconomic models and compare them to extended versions. It turns out that neither alternative expectation formation behaviour nor financial frictions can systematically increase the forecasting performance of macroeconomic models. Chapter 3 studies potential economic consequences of a coal phase-out in Germany, using a spatial dynamic general equilibrium model. A phase-out until 2035 is not worse in terms of welfare compared to a coal exit until 2040. Chapter 4 develops a dynamic stochastic general equilibrium (DSGE) model with risky capital and oil as production factors. The contribution of financial market frictions and oil market disturbances to the US business cycle are low. An oil tax increase, to reduce crude oil consumption by 10% can cause a contraction of GDP by 1 to 2%.

This study examines whether and to what extend global equity offerings at the IPO stage may affect issuing firms' ability to borrow in the domestic debt market. Tracking bank loans taken by U.S. IPO firms in the domestic syndicated loan market, we observe that global equity offering firms experience more favorable loan price than that offered to their domestic counterparts. This finding holds for a set of robustness tests of endogeneity issues. We also find that, compared with their domestic counterparts, global equity offering firms are less likely to have financial distress, engage more in international diversification, and are more likely to wait a longer time to apply for syndicated loans.

Die globale Produktion hat nach dem dramatischen Einbruch vom vergangenen Frühjahr wieder deutlich zugelegt. Vor allem Ostasien erholt sich rasch, während das BIP im Euroraum zuletzt zurückging. Von Seiten der Wirtschafts politik sind die Bedingungen für eine Erholung der Weltwirtschaft insgesamt günstig. In Deutschland dürfte mit fortschreitender Impfkampagne und schrittweiser Aufhebung der Beschränkungen eine Normalisierung des Konsumverhaltens privater Haushalte die Konjunktur beflügeln. Im Jahr 2021 wird das BIP um 3,7% zunehmen, nach einem Rückgang um 4,9% im Jahr 2020. In Ostdeutschland fällt sowohl der Rückgang als auch der Wiederanstieg deutlich geringer aus.

With the increasing concerns that accompany the rising trends of house sharing economies, regulators impose new laws to counteract housing supply scarcity. In this paper, I investigate whether the ban on short-term entire house listings activated in Berlin in May 2016 had any adverse effects from a household finance perspective. More specifically, I derive short-term rental income and counter-factually compare it with long-term rental income to find that the ban, by decreasing the supply of short-term housing, accelerated short-term rental income but did not have any direct effect on long-term rental income. Commercial home-owners therefore would find renting on the short-term market to be financially advantageous.