Labor law dispute regarding the admissibility and merits of a revision appeal against a labor court judgment

The Federal Labor Court (Bundesarbeitsgericht) dismissed the plaintiff's revision appeal, thereby upholding the judgment of the Rhineland-Palatinate Labor Court of Appeal and ordering the plaintiff to bear the costs of the revision proceedings. The case concerned a labor law dispute where the plaintiff challenged an adverse appellate decision, although the specific underlying subject matter of the original dispute is not detailed in the provided operative text. The final outcome confirms the validity of the lower court's ruling, resulting in a loss for the plaintiff. No specific statutory provisions or legal doctrines are cited in the excerpted text, but the decision relies on the procedural standards of the German Labor Court Rules governing revision appeals, specifically the grounds for rejecting an appeal that fails to demonstrate a material error in the facts or law of the prior instance.