The appellant, a railway company, faced viability challenges and engaged employees and the first respondent trade union in June 2009 to reduce its workforce through retrenchment. When negotiations failed, the appellant proceeded under the Labour Act to retrench employees. A total of 35 employees individually negotiated exit packages with the appellant's knowledge and the union's consent. A separate group of 35 employees was represented by the union, which disputed whether the correct retrenchment procedure had been followed. In September 2009, the parties appointed the second respondent as arbitrator to determine whether the employer had followed the correct retrenchment procedure. The arbitrator ruled in favour of the employer on 23 September 2009, finding the procedure lawful and authorizing the retrenchment. The union then filed an application in the High Court in October 2009 to set aside the arbitral award, which the High Court granted. The employer appealed to the Supreme Court.