Purpose The purpose of this paper is to show that for some key topics on labour economics such as the effect of seniority and job mobility in wages, it is important to explicitly consider firm fixed effects. The author also wants to test whether the importance of firm in explaining wage...

The path to a permanent contract often implies a sequence of temporary jobs, multi-firms experiences and unemployment spells. This paper investigates whether the characteristics of the path may influence the chances to get a permanent contract and the duration itself at the nonpermanent state....