The objective of this paper is to study equilibrium in a labour market, in which workers search on the job and firms offer wage contracts conditional upon workers' experience and employment status. In this environment, the optimal contract can be described by a promotion contract. The...

This paper assesses the trade-off between acquiring specialized skills targeted for a particular occupation and acquiring a package of skills that diversifies risk across occupations. Individual-level data on college credits across subjects and labor market dynamics reveal that diversification...

This paper demonstrates that in a free entry search and bargaining economy with concave production firms over-employ. Bargaining allows the worker's wage to depend upon marginal productivity. As such, with strictly concave production, the wage declines as firms employ more labour. Firms react to...