Einzelbesprechungen

Ohne ZusammenfassungAus dem Italienischen übersetzt von Erich Allina, Wien     

Tax compliance and firms' strategic interdependence

We focus on a relatively neglected area of the tax-compliance literature in economics, the behaviour of firms. We examine the impact of alternative audit rules on receipts from a tax on profits in the context of strategic interdependence of firms. The enforcement policy can have an effect on firms' behaviour in two dimensions — their market decisions as well as their compliance behaviour. An appropriate design of the enforcement policy can thus have a “double dividend” by manipulating firms in both dimensions.     

Perspectives for Future Economic Policy Coordination within EMU

While rules, procedures and institutions for economic policy-making in EMU have been put in place, their functioning is still open to the tests of reality. The singular mix of a centralized monetary policy and decentralized fiscal (and structural) policies makes coordination procedures a necessity, if an optimal policy mix pursuing the objectives of Art. 2 TEU is to be achieved. Inclusion of social partners into macro-policy coordination, as proposed in the new European Employment Pact, is a necessary complement, if wage policy is to play its role as a shock absorber for asymmetric shocks, but also in order to align policy orientations of all actors. While during the start-up phase of EMU each policy actor focuses on his own independence and autonomy, in the future the everyday task of conducting economic policy will lead to a more pragmatic cooperation by all actors.     

Implied stopping rules for American basket options from Markovian projection

This work addresses the problem of pricing American basket options in a multivariate setting, which includes among others, the Bachelier and Black–Scholes models. In high dimensions, nonlinear PDE methods for solving the problem become prohibitively costly due to the curse of dimensionality. Instead, this work proposes to use a stopping rule that depends on the dynamics of a low-dimensional Markovian projection of the given basket of assets. From a numerical analysis point of view, we split the given non-smooth high-dimensional problem into two subproblems, namely one dealing with a smooth high-dimensionality integration in the parameter space and the other dealing with a low-dimensional, non-smooth optimal stopping problem in the projected state space. Assuming that we know the density of the forward process and using the Laplace approximation, we first efficiently evaluate the diffusion coefficient corresponding to the low-dimensional Markovian projection of the basket. Then, we approximate the optimal early exercise boundary of the option by solving an HJB PDE in the projected, low-dimensional space. The resulting near-optimal early exercise boundary is used to produce an exercise strategy for the high-dimensional option, thereby providing a lower bound for the price of the American basket option. A corresponding upper bound is also provided. These bounds allow one to assess the accuracy of the proposed pricing method. Indeed, our approximate early exercise strategy provides a straightforward lower bound for the American basket option price. Following a duality argument due to Rogers, we derive a corresponding upper bound solving only the low-dimensional optimal control problem. Numerically, we show the feasibility of the method using baskets with dimensions up to 50. In these examples, the resulting option price relative errors are only of the order of few percent.     

Pricing under rough volatility

From an analysis of the time series of realized variance using recent high-frequency data, Gatheral et al. [Volatility is rough, 2014] previously showed that the logarithm of realized variance behaves essentially as a fractional Brownian motion with Hurst exponent H of order 0.1, at any reasonable timescale. The resulting Rough Fractional Stochastic Volatility (RFSV) model is remarkably consistent with financial time series data. We now show how the RFSV model can be used to price claims on both the underlying and integrated variance. We analyse in detail a simple case of this model, the rBergomi model. In particular, we find that the rBergomi model fits the SPX volatility markedly better than conventional Markovian stochastic volatility models, and with fewer parameters. Finally, we show that actual SPX variance swap curves seem to be consistent with model forecasts, with particular dramatic examples from the weekend of the collapse of Lehman Brothers and the Flash Crash.     

The Greek Public Sector Wage Premium before the Crisis: Size,Selection and Relative Valuation of Characteristics

We examine the Greek public–private wage differential before the debt crisis to evaluate the prospective impact of the recent public sector pay cuts. We find a large public premium which persists after controlling for individual and job characteristics. For men, much of this is accounted for by self‐selection into the sector that rewards better their characteristics, while for women it is largely driven by sectoral differences in returns. We attribute these effects to more egalitarian pay structures in the public sector and to demand problems in the private sector. The recent policy measures only partially change this situation, as wage deflation extends to the private sector, preserving public premia for the low paid.     

Perceptions of tourism promotion and business challenges: A survey-based comparison of tourism businesses and promotion organizations

Tourism is an important economic development driver in the U.S. especially in rural areas. Most US regions have tourism-related economic development organizations to assist the local industry. Despite such assistance, however, many tourism-based businesses struggle. One possible reason is a disconnect between business needs and the activities of related organizations. This study uses survey data from tourism-based businesses and tourism promotion and economic development organizations in rural western Pennsylvania and West Virginia to compare how the various actors perceive the most pressing tourism promotion efforts and business challenges. In general, tourism businesses and support organizations agree on the promotional needs of tourism-based businesses and hold similar perceptions about industry problems. However, tourism promotion agencies underestimate the role of the internet in promotions and perceive workforce issues differently than do businesses. Better alignment of priorities within tourism partnerships should enhance promotional and educational efforts as well as the integration of tourism into overall economic development efforts.     

Einzelbesprechungen

Ohne ZusammenfassungÜbersetzt von Erich Schiff, Wien.Übersetzt von Paul Brüll, Wien