The paper explores the fit properties of a class of multivariate Lévy processes, which are characterized as time-changed correlated Brownian motions. The time-change has a common and an idiosyncratic component, to re ect the properties of trade, which it represents. The resulting process may...

The recent financial crisis, alongside a dramatic rise in unemployment on both sides of the Atlantic, suggests that financial shocks do translate into the labour markets. In this paper we first present and review the basic facts on unemployment dynamics, financial shocks and Okun's elasticity...

A large body of empirical literature indicates that, contrary to predictions from economic theory, wages in the informal sector increase after a minimum wage hike. This phenomenon was so far explained as a byproduct of a signal (a lighthouse) conveyed by statutory minima to wage setting in the...

This paper constructs a class of multivariate Gaussian marked Poisson processes to model asset returns. The model proposed accommodates the cross section properties of trades, allows for returns to be correlated conditional on trading activity, and preserves the economic intuition of normality...

A definition of set-wise differentiability for set functions is given through refining the partitions of sets. Such a construction is closely related to the one proposed by Rosenmuller (1977) as well as that studied by Epstein (1999) and Epstein and Marinacci (2001). We present several classes...

The existing literature ignores the fact that in most European countries the strictness of Employment Protection Legislation (EPL) varies across the firm size distribution. In Italy firms are obliged to rehire an unfairly dismissed worker only if they employ more than 15 employees....

The traditional multivariate Lévy process constructed by subordinating a Brownian motion through a univariate subordinator presents a number of drawbacks, including the lack of independence and a limited range of dependence. In order to face these, we investigate multivariate subordination,...

Labor market reforms increasing flexibility at the margin have been recently paying out in terms of employment growth. This paper argues that two-tier labor market reforms have a transitional honeymoon, job creating effect. In a dynamic model of labor demand under uncertainty, the paper predicts...

This paper analyzes the effect of severance payments on the probability of separation at given tenure, wages and other individual and firm characteristics. It studies a mandatory deferred wage scheme of the Italian labour market (Trattamento di Fine Rapporto, TFR). Deferred wages increase job...