On 16 December 2025, the European Chief Prosecutor addressed a letter to the European Commission expressing concerns over amendments to the Slovak law on whistle-blower protection. The amendments had just been proposed by the government of the Slovak Republic and were scheduled to be adopted one week later under an expedited legislative procedure.

Following an analysis of the draft legislation, the European Chief Prosecutor concluded that it contains several elements that cannot be reconciled with the principles of the rule of law as set out in Regulation (EU) 2020/2092 of 16 December 2020 on a general regime of conditionality for the protection of the budget of the European Union.

In particular, the proposed amendments would restrict whistle-blower protection for certain categories of persons, notably those who are not directly employed by the entity whose alleged misconduct is reported. The letter states that a failure to ensure adequate protection for all whistle-blowers, including members of police forces, would significantly limit the detection, reporting, and investigation of corruption. The proposal would also introduce the retroactive application of the amendments, which, if adopted, would directly affect ongoing cases handled by EPPO. Therefore, the European Chief Prosecutor informed the European Commission in accordance with Recital 16 of Regulation (EU) 2020/2092 that, should the amendments be adopted, they would have a negative impact on the efficiency of criminal investigations into breaches of the law in general and on the overall level of protection of the financial interests of the EU.