"‘Social movement unionism' (SMU) has been suggested as a suitable strategy for union renewal in Spain, yet the literature on union renewal and SMU has two major shortcomings: (1) a lack of bottom-up studies, and (2) a lack of dialogue between industrial relations and social movement research. To redress these shortcomings, we make three contributions in this article: first, we provide evidence on the current opportunities for SMU in Spain's feminized precarious service sector; second, we apply a bottom-up intersectional approach to the study of SMU; and third, we bridge the research on industrial relations and on social movements by adopting a relational framework that looks at both union and non-union actors as key actors for union renewal. Our results show a landscape of co-existence, conflict, cooperation and competition between union and non-union actors, including established unions, radical grassroots unions and emerging forms of collective representation; however, if we are to develop SMU as a strategy for union renewal in post-Great Recession Spain, then there is still room for promoting deep coalition building between unions and novel forms of worker collectivism, as well as developing intersectional politics to reach non-traditional membership groups."

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