The Bosman ruling and the presence of native football players in their home league: the Spanish case

This paper examines whether the Bosman ruling plays a role in the presence (participation and performance) of native football (soccer) players in their home league, focusing on the Spanish case. By abolishing transfer fees after the expiration of contracts, as well as liberalizing the migration of professional football players within the European Union, the Bosman ruling could negatively impact the participation of national players in their home league. To explore this issue, we use data from the First Division of the Spanish League for the seasons 1980/1981–2011/2012. The results suggest a decline in the number of native Spanish players as a consequence of the Bosman ruling, although the impact does not appear to be permanent. However, we find that the Bosman case has a negative and lasting impact on the performance of Spanish players in their home league. Our findings do not change when we use different subsamples or introduce controls for unobserved characteristics, or for observed characteristics that could drive the presence of Spanish players, such as participation in European competitions, the performance of the Spanish national team, and the success of teams’ youth academies, among others. This work also takes into account other changes in the nationality quota rules and the impact of other post-Bosman legislative changes, such as the Kolpak case and the Cotonou agreement.