Full bibliography

There is both a lack of theoretical development as well as detailed empirical evidence on the organizational contexts that foster union renewal. Scholars have argued that the integration of social identities into unions and sustained 'lay' participation are key to renewal. This article seeks to identify organizational structures and processes that contribute to incorporating immigrant identities and fostering democratic participation in unions. Empirical analysis is based on ethnographic observations conducted in four local branches within the Service Employees International Union (SEIU) of the USA that underwent the Justice for Janitors campaign. The approach taken treats union renewal as a complex and non-linear process unfolding over time -- in each city, the campaign entered the complex social structures of local unions, disrupting old processes and structures, and creating new ones. Despite the fact that all four local unions experienced external revitalization owing to the campaign, internal renewal was most successful in Los Angeles, least in Washington DC, and somewhat successful in Boston and Houston. The findings demonstrate the difficulty of achieving transformative change in unions, yet point to key organizational elements that may help achieve it.