“…As a potentially decisive factor for trade union revitalization and for the reversal of several setbacks -such as membership loss, the dismantlement of representation structures, or the weakening of mobilization capacity, especially among atypical and young workers -the influence of social media is witnessed through distinctive but complementary (and interconnected) perspectives. These include organization, participation, and union democracy (Dencik and Wilkin, 2020;Greene et al, 2003;Hodder and Houghton, 2019;Kerr and Waddington, 2014); renewal of collective action repertoires and building bridges between labor market insiders and outsiders (Murray, 2017); union membership improvement (Bryson et al, 2010); transnational forms of labor solidarity (Geelan and Hodder, 2017;Lee, 2018), external coalitions between trade unions and other social movements (Ibsen and Tapia, 2017;Tattersall, 2010); challenges posed to the collective voice of workers and the impact of flexibility and adaptability of collective bargaining structures (Prassl, 2018).…”