Original: The Federal Labor Court (Bundesarbeitsgericht) is the German federal court of appeals for cases of labour law, both individual labour law (mostly concerning contracts of employment) and collective labour law (e.g. cases concerning strikes and collective bargaining).
Simplified: The Bundesarbeitsgericht or Federal Labour Court is the German federal supreme court of appeals for cases of labour law. This includes "individual" labour law (mostly about contracts of employment) and "collective" (more than one) labour law (e.g. cases about strikes and collective bargaining).