Where a labour dispute is pending before the Labour Court, the High Court lacks jurisdiction to entertain the same matter, as the Labour Court is the specialized tribunal created specifically to deal with labour disputes and is clothed with the necessary expertise, resources, and both appellate and review jurisdiction. Section 124 of the Labour Relations Act mandates that where proceedings have been instituted in respect of any matter, no person shall institute or continue other proceedings in respect of the same or related matter without first advising the second court or tribunal of the earlier proceedings. Failure to comply with section 124 renders the reference to the High Court incompetent. Litigants must exhaust available domestic remedies, particularly specialized tribunal remedies, before approaching the High Court.