Does Export Openness Increase Firm‐level Output Volatility?

There is a widespread concern that increased trade may lead to increased instability and thus risk at the firm level. Greater export openness can indeed affect firm‐level volatility by changing the exposure and the reaction of firms to macroeconomic developments. The net effect is ambiguous from a theoretical point of view. This paper provides firm‐level evidence on the link between openness and volatility. Using comprehensive data on more than 21,000 German manufacturing firms for the period 1980–2001, we analyse the evolution of firm‐level output volatility and the link between volatility and export openness. Our paper has three main findings. First, firm‐level output volatility is significantly higher than the level of aggregate volatility, but it displays similar patterns. Second, increased export openness lowers firm‐level output volatility. This effect is primarily driven by variations along the extensive margin, i.e. by the distinction between exporters and non‐exporters. Variations along the intensive margin, i.e. the volume of exports, tend to have a dampening impact on volatility as well. Third, small firms are more volatile than large firms.     

The entry price system for fresh fruit and vegetable exports from China to the EU — Breaking a fly on the wheel?

China's exports of apples and pears to the EU have increased substantially, although the EU production of apples and pears is protected by the EU entry price system (EPS), aiming to protect EU producers against international competition by restricting imports below a minimum import price. This study investigates the relevance of the EPS for Chinese exports of apples and pears to the EU accounting for changes over time and seasonal variation. Our results suggest that the high relevance of the EPS for apples originating in China was of temporary nature, whereas the relevance of the EPS for pears originating in China is of a more general nature. In addition, the relevance of the EPS varies seasonally. Finally, we find that the production of pears in China is more competitive than the production of apples vis-à-vis the EU. Therefore, China's fresh fruit and vegetable (FFV) producers would benefit more from an improved EU market access for pears than for apples. Thus, China should put more effort in negotiating improved EU market access conditions for pears rather than for apples.     

International price and earnings momentum

In this paper, we find that price and earnings momentum are pervasive features of international equity markets even when controlling for data-snooping biases. For Europe, we show price momentum to be subsumed by earnings momentum on an aggregate level. However, this rationale can hardly be sustained on a country level. Also, the above explanation is confined to certain time periods in the USA. Since we cannot establish a decent relation between momentum and macroeconomic risks, we suspect a behavior-based explanation to be at work. In fact, we find momentum profits to be more pronounced for portfolios characterized by higher information uncertainty. Hence, the momentum anomaly may well be rationalized in a model of investors underreacting to fundamental news. Finally, we find that momentum works better when limited to stocks with high idiosyncratic risk or higher illiquidity, suggesting that limits to arbitrage deter rational investors from exploiting the anomaly.     

Bundesverfassungsgericht und Krisenpolitik der EZB — Stellungnahmen der Ökonomen

In June 2013, the Federal Constitutional Court in Germany held an expert hearing on the suitability of ECB measures, such as the purchase of government bonds, and their compatibility with existing EU and German legislation. The statements of five invited experts are documented here. The authors comment on the path from the agreement that has laid down the basic rules for the euro area to a crisis-driven approach that seems to have forgotten these rules. The ECB policy holds many risks - above all that of financing public budgets almost without limits - for the stability of monetary and fiscal governance in the euro area. On the other hand, ECB measures can also be interpreted as a necessary means to comply with the ultimate task of the ECB, the defence of price stability. Hence the ECB’s crisis measures do not represent any intention to intervene in fiscal or economic policy measures, and after the crisis the ECB can return to a narrower interpretation of the role of a central bank. It should not be forgotten that the ECB measures bear high risks for the countries in trouble as well as for those countries supporting them.     

On the composition of elementary errors

Analysis of statistical distributions.

1. Let m and σ denote the mean and the standard deviation of a statistical variable X, and let W(x) be the probability function of that variable as defined in the first paper ¹ This journal, 1928, p. 13. We shall refer to that paper by the letter I. — The sense in which the words probability function and frequency function are used here must be carefully observed, If the probability that a certain variable lies between x and x+dx is f(x) dx, then f(x) is the frequency function of the variable. The probability function is, in cases where a finite frequency function ex-ists, equal to the integral of the latter, taken over the interval from -∞ to x — The notations of the present paper will, as a rule, correspond to those of I, the most important exception being the symbol n , which will here always denote the number of observations in a statistical series and not, as in I, the number of elementary components. , Art. 1. If we put (cf. I, formula (3)) F(x) is the probability function of the variable , with the mean value 0 and the standard deviation 1. Denoting by µ₂, µ₃, ... the moments of W(x) , taken about the mean (cf. I, Art. 7, where m is supposed to be zero), we put, following Charlier,      

The transformation of the German vocational training regime: evidence from firms’ training behaviour

The German system of industrial relations has undergone significant changes in the last decade. This article reflects on and provides empirical evidence for how these changes have affected the training behaviour of firms. Conventional perspectives would predict a general decline in training investment when the constraints of collective wage bargaining are loosened. Relying on a large data set on the costs and benefits of apprenticeship training for the years 2000 and 2007, we do find evidence for this hypothesis but would add that the strength of the effect varies strongly across different types of firms. Large firms have benefited much more from participating in training than have small firms and have therefore maintained their investment in training because they are able to reduce net costs by expanding the productive contributions of apprentices. This finding may help to explain the apparent resilience of the German training system in the recent economic and financial crisis.     

Insurance business described by a mathematical model

At the end of November 1972 the Filip Lundberg Foundation arranged a two days seminar in Saltsjöbaden, Sweden. The purpose of the seminar was to have a discussion about Management Control of Insurance Business. Twenty participants from the four Scandinavian countries took part in the discussions. It was thought that Management Control of Insurance Business must be based on a mathematical model of insurance business where all relevant factors can act together. It was generally agreed that this approach to the problem was useful and important and that this is a problem area where much research work needs to be done in the future. During the seminar the problem area was divided into the following six topics for discussion: