ABSTRACT – The contribution examines the ruling handed down on the 28th of January 2025 in case C-253/23, ASG 2, in which the ECJ stated the duty incumbent to national judges to grant admissibility to collective actions for damages whenever they amount to the only effective remedy to ensure the right to full compensation. After a brief presentation of the normative framework, the piece illustrates the Conclusions of the Advocate General and the Court’s findings.