Maskin's Theorem with limited veto power

We weaken the no-veto power condition of Maskin [Maskin, E.,1999. Nash equilibrium and welfare optimality. Rev. Econ. Stud. 66, 23–38] to limited veto power, and prove that any monotonic social choice rule is Nash implementable if it satisfies this weaker condition. The result is obtained by using the canonical Maskin mechanism without modification. An immediate corollary is that the weak core is Nash implementable in any coalitional game environment. An example is given to show that the strong core need not be implementable, even when it is monotonic.     

Determinanten der Verweildauer in Arbeitslosigkeit in Deutschland

Die hohe und andauernde Arbeitslosigkeit geh?rt zu den dringendsten wirtschaftspolitischen Problemen in Deutschland. Ist die Fixierung auf die absolute H?he der Arbeitslosigkeit berechtigt? Welche Rolle spielen die Str?me und Bewegungen auf dem Arbeitsmarkt? Welches sind die Determinanten der Verweildauer in Arbeitslosigkeit?     

Regional unemployment and human capital in transition economies1

Differences in regional unemployment in post‐communist economies are large and persistent. We show that within‐country regional variation in inherited human capital in four such economies explains the bulk of regional variation in unemployment; we explore potential explanations. Our evidence suggests that internal skill‐biased migration and the flow of foreign direct investment are not working as adjustment mechanisms but rather help explain the lack of convergence in regional unemployment rates. Although this capital and labour mobility pattern is consistent with the presence of regional skill spillovers, we find little support for this hypothesis. Instead, the observed migration pattern appears to arise from different skill‐specific adjustments to regional shocks brought about in part by labour‐market institutions such as guaranteed welfare income.     

When does a developing country use new technologies?

We develop a model of optimal pattern of economic development that is first rooted in physical capital accumulation and then in technical progress. We study an economy where capital accumulation and innovative activity take place within a two sector model. The first sector produces a consumption good using physical capital and non skilled labor. Technological progress in the consumption sector is driven by the research activity that takes place in the second sector. Research activity which produces new technologies requires technological capital and skilled labor. New technologies induce an endogenous increase of the total factor productivity of the consumption sector. Physical and technological capital are not substitutable while skilled and non skilled labor may be substitutable. We show that under conditions about the adoption process of new technologies, the optimal strategy for a developing country consists in accumulating physical capital first; postponing the importation of technological capital to the second stage of development. This result is due to a threshold effect from which new technologies begin to have an impact on the productivity of the consumption sector. However, we show that once a certain level of wealth is reached, it becomes optimal for the economy to import technological capital to produce new technologies. The authors would like to thank the participants to the seminar of GREDEG, especially Richard Arena, Flora Bellone, Jean-Luc Gaffard and Jacques Ravix, and also the participants to a seminar at European University Institute. We are also grateful to the referees for their very thoughtful remarks and criticisms. Cuong Le Van started writing this joint paper with Olivier Bruno and Benoit Masquin in 2005, in GREDEG.     

French consumers' perceptions of the unattended delivery model for e-grocery retailing

A survey of 245 French e-grocery customers reveals their views on the unattended delivery model, including statistically significant differences across age groups but not between genders in terms of interest in unattended grocery delivery and intentions to buy groceries online. Some customer groups expect to adopt e-grocery if home delivery becomes possible, but their willingness to pay for delivery is low. Moreover, the analysis reveals that willingness to pay is not related to distance from the store, shopping duration, or shopping pleasure, such that could help grocers cover the costs. Thus French grocers will have difficulty moving to a complete e-commerce model.     

Directed search, unemployment and public policy

Abstract .  We examine the effects of public policy parameters in a simple directed search model of the labour market, and contrast them with those in standard random matching models with Nash bargaining. Both finite and limit versions of the directed search model are considered, and the value of the limit model as an approximation of the finite one is assessed. As with the random matching model, job creation is the key channel through which the policy parameters affect the equilibrium of the directed search model. Both comparative static effects of the policy parameters and optimal configurations are identified.     

Growth effects of structural reforms in Southern Europe: the case of Greece,Italy, Spain and Portugal

This paper develops a semi-endogenous growth model for analysing the intertemporal effects of structural reforms in Southern European countries (Italy, Spain, Portugal and Greece). The model follows the product-variety paradigm in a semi-endogenous setting, and includes a disaggregation of labour into different skill groups. We use a comprehensive set of structural indicators in order to calibrate the model to important macroeconomic ratios and levels of productivity and employment. Our results show that structural reforms yield significant economic gains in the medium and long run. The results point to the importance of product market reforms and labour market related education and tax reforms as the most promising areas of structural policy interventions. This paper also argues for placing more emphasis on education policy which is key in upgrading the labour force, especially in these countries where the share of low skilled labour is among the highest in the euro area.     

International Exploitation of Domestic R&D Exploration: New Insights from Russian Manufacturing Firms

In this paper, we approach R&D cooperation and international market expansion from an exploration-exploitation perspective and look how various domestic R&D partners affect international market expansion activities in Russian firms. Our findings, based on a data survey of 206 manufacturing companies, show that different partners affect differently when it comes to market expansion and that their effect depends on a number of things such as the proximity of the international market. Using the exploration-exploitation approach, we are able to explain the phenomenon in more detail and so contribute to the existing international business and innovation management literature.     

Endogenous growth and environmental policy: are the processes of growth and tertiarization in developed economies reversible?

The starting point for this article is the idea put forward by Gadrey (2008, 2010) that environmental problems and a policy of addressing them by introducing an environmental tax could trigger economic contraction and downscaling and a shrinking of the service sector in developed economies. The purpose of this article is to test these hypotheses using an evolutionary simulation model. To this end, we use a model of endogenous growth and structural change into which an environmental dimension is incorporated. The results of our simulations certainly reveal structural change within service industries but no change in the distribution of employment between services and manufacturing. Furthermore, we show that the environmentally desirable stagnation of labor productivity in the capital goods sector is compatible with a largely positive growth trend in the economy as a whole, with the development of knowledge-intensive business services apparently able partially to offset the stagnation of productivity in the capital goods sector. We conclude by emphasizing the need for environmental innovation in service activities and cast doubt on the long-term effectiveness of an environmental tax in the fight against pollution.