Appeal against a dismissed claim filed after the deadline is inadmissible; cassation against a final order on the same claim violates res judicata.

The Supreme Court dismissed the appeal regarding the reinstatement and back pay claims because they were already finally decided by a lower court, rendering the appeal inadmissible. The appellant had failed to separately appeal the final order dismissing these specific claims within the statutory time limit. Consequently, the court set aside the appellate court's decision to hear these matters, citing a violation of the principle of res judicata and procedural inadmissibility.