A second decision of the ECJ in Laval Ltd v Svenska Byggadarbetareforbundet C - 341 / 05 [2007] All ER (D) 278 (Dec)(given by the same
bench a week after that in Viking Line) shows another potential threat to inter-state
industrial action by trade unions, this time
under Art 49 on freedom to provide services (taken alongside the Posted Workers Directive 96 / 71 / EC).