Labour market reforms in 1996 and 2003 introduced new forms of employment contracts. Various attempts have since been made to categorize these according to their degree of «atypical» or «non-standard» content. In other words, a large proportion of those work-ing on atypical contracts are in fact «quasi employees» or may be termed an economically dependent worker. The availability of Plus a new labour supply data source carried out by Isfol provides specific tools to investigate the reasons for using non-standard employment contracts.only subscribers can see the full article