First suggested in the Netherlands, in the late-1980s, the notion of Social Movement Unionism was ?rst applied in South Africa, where it had both political and academic impact. The South-African formulation combined the class and the popular: a response to this combined class and new social movement theory/practice. The Class/Popular understanding was, however, more widely adopted, and applied (to and/or in Brazil, the Philippines, the USA, internationally), receiving its most in?uential formulation in the work of Kim Moody (USA). A Class/New Social Movement response to this was restated in terms of the New Social Unionism. The continuing impact of globalization and neo-liberalism has had a disorienting e?ect on even the unions supposed by ...