This paper develops and estimates a human capital model of wage growth based on learning by doing. Learning by doing rates are assumed to be heterogeneous and firms offer different career structures in terms of the rate of acquisition of firm specific human capital. The model is estimated using...

Empirical evidence on the labour market performance of immigrants shows that migrant workers suffer from an initial earnings disadvantage compared to observationally equivalent native workers, but that their subsequent earnings tend to increase faster than native earnings. Economists usually try...

We investigate two dimensions of investment in general human capital on-the-job: the number of workers trained and the intensity of training for each worker. In the benchmark case, we consider wage and training decisions made by firms in an imperfectly competitive labour market. The benchmark...

This paper presents a modified and improved methodology for the decomposition of wage differentials between two groups of workers into an endowment component and a discrimination component. The standard decomposition technique does not take into account different probabilities of entering the...

In this paper we develop a theory of union bargaining power based on firm-specific skills acquired by the insider work-force. We show that unions increase the bargaining power of insiders only in states of the world in which the firm would like to retain insiders but not hire outsiders. Union...

We study a labour market in which firms can observe workers’ output but not their effort, and in which a worker’s productivity in a given firm depends on a worker-firm specific component, unobservable for the firm. Firms offer wage contracts that optimally trade off effort and wage costs. As...

A labour-matching economy with ex post heterogeneous firms is presented. When bargaining over the wage, firms and workers do not know the level of product demand. Once demand is realized, hours of work are chosen. We show that the existence of a legal workweek may enhance efficiency with respect...

We study the emplyment and distributional effects of regulating (reducing) working time in a general equilibrium model with search-matching frictions. Job creation entails some fixed costs, but existing jobs are subject to diminishing returns. We characterize the equilibrium in the de-regulated...

We consider a competitive search model where firms with vacancies choose between posting a wage ex-ante and bargaining it with workers ex-post. Workers apply for vacancies after observing firms' wage setting decisions, and differ in some observable but not verifiable qualifications that affect...

This paper presents a simple search and bargaining economy in which firms use concave production. Because a firm and worker negotiate over the worker's marginal productivity, the firm's wage is a function of its labour force. Reacting to this wage function, firms choose an excessively large and...