The National Union of Metalworkers of South Africa (Numsa) had given the 18 affected bus companies until the end of business on Tuesday to meet their 15% pay hike demand.
Talks between the union and bus companies deadlocked in February this year and mediation by the Commission for Conciliation, Mediation and Arbitration failed to reach common ground.
Numsa’s Phakamile Hlubi says bus drivers belonging to the affected bus companies will be picketing at their bus depots across the country today.