The wage gap in Spain for temporary workers: the effects of the Great Recession

The purpose of this paper is to analyse the wage gap between temporary and permanent workers across the whole wage distribution, not just at the mean, and the evolution before and after the Great Recession on this gap in Spain.

An extended Mincer-type wage equation is estimated using ordinary least square regression and unconditional quantile regression. Then, the decomposition of the wage gap between workers with fixed-term and permanent contracts for each quantile is made using the Fortin, Lemieux and Firpo decomposition.

The results show that two workers, with identical characteristics, earn different salaries if they have a different type of contract. However, the wage gap is not constant across the wage distribution. The penalty for temporary workers is wider for higher wages. Moreover, the main part of the gap is due to observed characteristics, but other factors (unobserved characteristics and discrimination) become more relevant in the upper part of the wage distribution.

The study expands upon available studies for Spain in two points. First, it is the first paper to the knowledge that analyse both the wage gap between temporary and permanent workers across the wage distribution and its decomposition. Second, the paper explores what happened before and after the Great Recession. In the years that the paper analyses there is also a labour market reform.