This is a useful chapter. It summarises the state of the art on an often-overlooked subject, listing the relevant literature in case readers want to explore the matter further. And it supplements this with concise case accounts of recent developments in the relationship between social movements and trade unions in a number of countries. I have nothing to hold against or add to Donatella’s piece. So I will limit myself to one specific aspect of what now tends to be called the “framing” of an issue before I proceed to several, more or less related general remarks on social movement and trade union politics in, and in relation to, the European Union (EU). The intention here is to sketch out a baseline for research and theory on this subject, in the sense of a list of fundamental conditions underneath whatever conjunctural, sectoral, topical, etc., modulations may be observable on top of them. I am doing this because I suspect that much of the work on and discussion of “European integration” is far too occupied with minor fluctuations in current events, to the neglect of deeply rooted priors that remain importantly in force regardless of what happens on the surface.