Through a deep analysis of doctrine and jurisprudence, the work investigates the various issues raised over the years in relation to the process of repression of anti-union conduct, as regulated by art. 28 of the Workers’ Statute. In this sense, it analyzes questions regarding the purpose and object of proceedings, the “teleological” notion of anti-union conduct and the presuppositions for action, active legal capacity and interest in standing, legitimation to be made a defendant, interlocutory phase and opposition phase, in cases of repression of anti-union conduct within public administration.Through a deep analysis of doctrine and jurisprudence, the work investigates the various issues raised over the years in relation to the process of repression of anti-union conduct, as regulated by art. 28 of the Workers’ Statute. In this sense, it analyzes questions regarding the purpose and object of proceedings, the “teleological” notion of anti-union conduct and the presuppositions for action, active legal capacity and interest in standing, legitimation to be made a defendant, interlocutory phase and opposition phase, in cases of repression of anti-union conduct within public administration.Monograph's chapter