The Constitutional Court noted that similar provisions had previously been declared unconstitutional by the Court in an earlier decision (Pl. ÚS 7/02), but had subsequently been reintroduced through legislative amendments. The Court found the petitioner's argument to be partially justified and based its decision on several key considerations.
First, the Court reiterated that the continuous exercise of judicial functions is an essential characteristic of the office of judge as guaranteed by the Constitution. Assigning judges to the Ministry of Justice, where they perform executive functions, interrupts this continuity and undermines the separation of powers. Judges in such roles run the risk of forming personal and professional ties within the executive branch, which may compromise their impartiality when they return to their judicial duties. The Court noted that this concern is heightened under the current law, which allows for assignments of up to three years - significantly longer than the one-year limit previously struck down.
Second, the Court emphasised the significant influence of the executive branch, in particular the Ministry of Justice, on the selection, appointment and career advancement of judges in the Czech Republic. Allowing the Ministry to assign judges to its staff creates dependence on the executive and jeopardises the independence of the judiciary. While similar practices may exist in other countries, such as France or Germany, the Court stressed that the specific institutional conditions of the Czech Republic make such assignments particularly problematic, as the self-government of the judiciary is relatively underdeveloped.
Thirdly, the Court confirmed its earlier decision in Pl. ÚS 7/02, which had already declared such assignments unconstitutional. By reintroducing the contested provisions, the legislature ignored the Court's previous ruling and violated the principle of the independence of the judiciary. The Court found that these provisions not only violated the requirement of external or objective judicial independence, but also undermined public confidence by creating the appearance of judicial bias.
The Court also criticised the remuneration structure for judges attached to the Ministry of Justice. These judges continue to receive judicial salaries and benefits under the judicial salaries law, even though they do not perform judicial functions, which creates an inequity compared to other employees of the Ministry who are compensated under the ordinary labour law. This inconsistency further underlines the incompatibility of assigning judges to executive functions.
In conclusion, the Constitutional Court found that the assignment of judges to the Ministry of Justice undermines the independence of the judiciary and violates constitutional principles. By confirming its earlier decision in Pl. ÚS 7/02, the Court emphasised the need to preserve the independence of the judiciary and the separation of powers, and ultimately annulled the contested provisions.