The two reference cases considered here concern the compatibility with EU law of industrial disputes and collective actions against EU companies exercising their free movement rights. The Swedish case, under a reference of the Arbetsdomstolen (Swedish Labour Court) of 15 September 2005 in litigation between Laval un Partneri Ltd (hereafter ‘Laval’) v. Svenska Byggnadsarbetareförbundet, Avdelning 1 of the Svenska Byggnadsarbetareförbundet, Svenska Elektrikerförbundet (in the material that follows, ‘Bygnadds’) and others concerns the question of whether an industrial action of Swedish labour unions against a Latvian company that wanted to perform a work contract under Swedish procurement rules through the use of posted Latvian workers falls under the ‘freedom to provide service’ rules of Article 49 EC and, if this is the case, whether this action can be justified either under the posted workers directive, 96/71/EEC, or under a specific Swedish law exempting labour unions from liability in taking action against foreign-based companies (the so-called Lex Britannia; see sections E.I and H.II below).