We investigate migrant construction workers' experiences in the Former Soviet Union, examining their attitudes to other ethno-national groups, unions and collective action. Industrial relations and migration studies view migrant workers hypermobility and diversity, under conditions of low union coverage and rising nationalism, as potentially obstructing consciousness raising and mobilizing. Workers participating in our study faced unions indifference, ethno-national segregation and discrimination. Managerial abuses, informality and contestation from below led to spontaneous mobilisation. Lack of institutional channels to solve these disputes drove them into further mobility. However, complex mobility trajectories and collective action translated into increased awareness of collective interests and rejection of nationalist ideologies. The outcome is a 'multinational worker' potentially resistant to nation-state politics and capital's logics but also aware of the values and usefulness of collective solidarities. Thus, previous arguments uniquely associating exit with individualistic attitudes, and post-socialist legacies with workers' quiescence present only partial pictures.