Revision of labor law judgment; scope of appellate review and cost allocation in the final instance

The Federal Labor Court (BAG) dismissed the defendant's revision, thereby upholding the Hamburg Regional Labor Court's judgment in favor of the plaintiff and ordering the defendant to bear the costs of the appellate proceedings. The dispute concerned a labor law claim where the plaintiff successfully pursued their rights against the defendant, and the higher court found no legal error in the lower instance's ruling. The decisive legal basis rests on the standards of civil revision procedure applicable to labor law cases, where the revision was rejected as unfounded, confirming the operative effect of the first-instance outcome.