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...

We present an experimental test of a shirking model where monitoring intensity is endogenous and effort a continuous variable. Wage level, monitoring intensity and consequently the desired enforceable effort level are jointly determined by the maximization problem of the firm. As a result,...

Using a controlled experiment, we examine the role of nurture in explaining the stylized fact that women shy away from competition. Our subjects (students just under 15 years of age) attend publicly-funded single-sex and coeducational schools. We find robust differences between the competitive...

Women and men may differ in their propensity to choose a risky outcome because of innate preferences or because pressure to conform to gender-stereotypes encourages girls and boys to modify their innate preferences. Single-sex environments are likely to modify students' risk-taking preferences...

Single-sex classes within coeducational environments are likely to modify students' risk-taking attitudes in economically important ways. To test this, we designed a controlled experiment using first year college students who made choices over real-stakes lotteries at two distinct dates....