Wage Dispersion and Efficiency. It is often assumed that markets generate efficient allocations, but these are not necessarily fair. The widening of wage differentials that is currently observed is interpreted in this manner: Skill-biased technological progress increases demand for skilled work...

In the labour markets that gather few companies to compete for many workers, the economic theory predicts the existence of monopsony rents. It should also be the case of the Spanish soccer industry. However, the clubs of this league do not profit from the expected rents. The purpose of this...