(1) Upon receiving the application for remedy as referred to in Article 82, the Labor Relations Commission concerned shall conduct a necessary investigation and inquiry of the persons involved without delay.
(2) When conducting the inquiry as referred to in paragraph (1), the Labor Relations Commission may, at the request of any one of the parties concerned or ex officio, have a relevant witness appear before the Labor Relations Commission and ask questions on the pertinent matters.
(3) In conducting the inquiry as referred to in paragraph (1), the Labor Relations Commission shall give the parties concerned adequate opportunities to present evidence and to cross-examine a witness.
(4) Procedures pertaining to the investigation and inquiry by the Labor Relations Commission as referred to in paragraph (1) shall be followed as separately stipulated by the National Labor Relations Commission.