Setting It Right: Employment Protection,Labour Reallocation and Productivity

This paper provides a critical review of the recent empirical evidence on the links between regulations affecting the hiring and firing of workers, labour reallocation and productivity growth. It also reviews how workers affected by labour mobility fare and discusses policy options to support them. The upshot is that stringent employment protection has a sizeable negative effect on labour market flows and, through this channel, hinders productivity growth. At the same time, the evidence also shows that while greater labour market reallocation benefits many workers through higher real wages and better careers, some displaced workers lose out via longer unemployment durations and/or lower real wages in post-displacement jobs. In this context, reforms of employment protection should be considered as part of a comprehensive package that also includes an adequate safety net for the unemployed and effective re-employment services.     

Ascending auctions for multiple objects: the case for the Japanese design

Summary. We consider two ascending auctions for multiple objects, namely, an English and a Japanese auction, and derive a perfect Bayesian equilibrium of the Japanese auction by exploiting its strategic equivalence with the survival auction, which consists of a finite sequence of sealed-bid auctions. Thus an equilibrium of a continuous time game is derived by means of backward induction in finitely many steps. We then show that all equilibria of the Japanese auction induce equilibria of the English auction, but that many collusive or signaling equilibria of the English auction do not have a counterpart in the Japanese auction.Received: 2 September 2004, Revised: 20 April 2005, JEL Classification Numbers: C72, D44.Fabrizio Germano: Correspondence toWe are indebted to Philippe Jehiel for useful discussions and to Nicolas Vieille for suggestions in the proof of Proposition 2; we also thank seminar audiences in Athens, Basel, Beer-Sheva, Berlin, Brussels, Cambridge, Edinburgh, Exeter, Lausanne, Lisbon, London, Louvain-la-Neuve, Namur and Tel Aviv. Germano acknowledges financial support from Euopean Commission, TMR Network Grant ERBFMRXCT0055, “Cooperation and Information” as well from the Spanish Ministry of Science and Technology, Grants SEC2001-0792, SEJ2004-06319, and in form of a Ramon y Cajal Fellowship. Lovo is member of GREGHEC, unité CNRS, FRE-2810. The support of the Economic and Social Research Council (ESRC) is also gratefully acknowledged. The work was part of the programme of the ESRC Research for Economic Learning and Social Evolution.     

Delivering training strategies: the balanced scorecard at work

Aligning the value of training to organizational goals is an emerging need in human resource management. This study, aiming at expanding the research on training evaluation from a strategic management perspective, examines whether the use of the Balanced Scorecard approach can enable an effective delivery of training strategies, thus strengthening the link between training and organizational goals. The research was based on action research methodology. Researchers worked for about 12 months with three healthcare organizations. The research findings indicate that the balanced scorecard: (1) allows visualization of a clearly focused and internally consistent map of cause‐and‐effect relationships, turning the functional training efforts into strategic results; (2) effectively supports the training function both in managing training processes and in delivering targeted organizational outcomes; (3) offers a specific set of critical measures for evaluating the training function's performance; and (4) permits the fostering of a sound alignment between training programme objectives and functional goals. Various theoretical and practical implications are discussed.     

Public happiness in today’s economics

This paper illustrates the significance of revisiting the idea of public happiness today, by briefly discussing recent contributions, some of which appeared in the IREC review.     

Local volatility under rough volatility

Several asymptotic results for the implied volatility generated by a rough volatility model have been obtained in recent years (notably in the small-maturity regime), providing a better understanding of the shapes of the volatility surface induced by rough volatility models, supporting their calibration power to SP500 option data. Rough volatility models also generate a local volatility surface, via the so-called Markovian projection of the stochastic volatility. We complement the existing results on implied volatility by studying the asymptotic behavior of the local volatility surface generated by a class of rough stochastic volatility models, encompassing the rough Bergomi model. Notably, we observe that the celebrated “1/2 skew rule” linking the short-term at-the-money skew of the implied volatility to the short-term at-the-money skew of the local volatility, a consequence of the celebrated “harmonic mean formula” of [Berestycki et al. (2002). Quantitative Finance, 2, 61–69], is replaced by a new rule: the ratio of the at-the-money implied and local volatility skews tends to the constant $1/(H+3/2)$ (as opposed to the constant 1/2), where H is the regularity index of the underlying instantaneous volatility process.