We present a dynamic non-linear model for an efficient contracting between a firm facing adjustment costs on labour and a union having preferences which are subject to habit formation. The model’s first order necessary conditions are estimated for the French, the Dutch and the Belgian labour...

In efficient global labour markets for very high wage workers one might expect wage differentials between migrant and domestic workers to reflect differences in labour productivity. However, using panel data on worker-firm matches in a single industry over a seven year period we find a...