The essay deals with the question of the types of effects attributable to collective agreements signed by multinational companies. Starting from a recognition of some transnational texts with the most prescriptive provisions, the Author analyzes the possibility to identify a direct effect of framework agreements on individual employment relationships. This interpretative hypothesis was considered impracticable without a heteronomous regulation of the negotiation procedures, so the Author wonders about the legal possibility of proposing an implementation mechanism based on the tools of union autonomy, shifting the issue from the notion of legal effect to that of effectiveness. The question cannot ignore some considerations related to limits to which the Court of Justice of the European Union has subjected collective autonomy and the right to strike at European level, starting from the statement of the so-called Laval doctrine.
Keywords: Transnational collective agreements; Efficacy; European Trade Union Federations; European Work Councils; Optional legal framework for Transnational Collective Bargaining; Collective Autonomy; Right to strike.