Employment law remuneration claim: sufficiency of evidentiary support for wage entitlements on revision review

The Federal Labor Court (BAG) dismissed the plaintiff's revision appeal, thereby upholding the judgment of the Hessian Higher Labor Court and ordering the plaintiff to bear the costs of the revision proceedings; the plaintiff consequently prevailed in the final instance. The dispute concerned a claim for remuneration or compensation related to employment law, where the lower court's decision was challenged on legal grounds. The decisive legal basis for the court's rejection of the revision likely involved the application of German civil and labor law provisions governing the validity of employment agreements, the calculation of wages, or the exhaustion of legal remedies, affirming that the plaintiff failed to demonstrate a material error in the lower court's assessment of the facts or the application of law.