The Council of State on Friday gave the government two months to abide by a previous ruling ordering it to restore armed forces and police wages to the same level as in 2012, when they were cut by 10 percent.
The coalition has so far failed to adopt the ruling, which would cost some 500 million euros, including back pay.
This prompted an appeal by a number of groups representing soldiers and policemen.
Their case was examined by the court’s compliance committee.
If the government fails to act on the latest Council of State verdict it faces being fined for every day that the salaries are not restored to their previous levels.