Membership duration in a Spanish union: A survival analysis

Sergi Vidal, Ramón Alós, Pere Jódar, Pere Beneyto

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)


This article presents an analysis of the characteristics that are associated with union membership duration using data from the membership registers of the largest Spanish trade union: Comisiones Obreras (CCOO, Workers' Commissions). Making use of survival analysis techniques, the results indicate that the shortest membership durations and the highest risks of leaving are associated with workers with poor employment conditions, mainly youth and foreigners, as well as those in firms, economic sectors, and territories where the union has a rather weak presence. As workers in these situations represent the majority of both current joining and leaving rates, the article concludes that retention policies should focus on the early stages of union membership. © The Author(s) 2013.
Original languageEnglish
Pages (from-to)507-529
JournalEconomic and Industrial Democracy
Publication statusPublished - 1 Jan 2014


  • Dual labor market
  • trade unions
  • union membership


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