BAG revision on labor law claim: lower court judgment upheld and appellant's appeal dismissed

The Federal Labor Court (BAG) dismissed the plaintiff's revision, upholding the lower court's decision and ordering the plaintiff to bear the costs of the appeal, thereby allowing the defendant to prevail. The dispute concerned a labor law matter adjudicated by the 6th Senate, specifically challenging the prior judgments of the Landesarbeitsgericht Niedersachsen. The decisive legal basis rests on the application of German labor law doctrines relevant to the specific claims raised in the underlying proceedings, with the appellate court finding no grounds to overturn the instance court's factual and legal determinations.