The Department of Home Affairs (DHA) proposed changes to employees’ working hours to introduce Saturday work in February 2015. DHA maintained that the proposal was subject only to consultation, not collective bargaining. Public sector unions opposed the changes, contending that they constituted a matter of mutual interest requiring collective bargaining. When DHA implemented the changes unilaterally, the unions referred a dispute of mutual interest to the General Public Service Sectoral Bargaining Council for conciliation. At conciliation, DHA raised a jurisdictional objection, arguing the dispute was not a matter of mutual interest but a managerial prerogative concerning work practices. The conciliator upheld this objection. On review, the Labour Court set aside the conciliator’s ruling and ordered that the dispute be conciliated. DHA’s subsequent applications for leave to appeal were refused, culminating in an application to the Constitutional Court.