Striking unions at Transnet on Wednesday asked the Commission for Conciliation, Mediation and Arbitration (CCMA) to intervene in their wage dispute.
Thirteen people were arrested for public violence and intimidation during the Transnet workers’ strike in Durban on Monday, the company said.
The South African Trade and Allied Workers Union strike against Transnet will go ahead on Monday, but will not affect Gauteng Metrorail services.
South Africa’s largest steel producer ArcelorMittal South Africa and the trade union UASA have reached a wage agreement.
Should the road fright industry’s wage strike continue for more than a week, the country may be facing a national fuel crisis.
Cosatu has vowed to press for higher pay increases during this year’s round of wage negotiations, despite the country’s difficult economic conditions.
Telkom has agreed to offer workers a salary increase of 11,5%, said the Communications Workers’ Union on Saturday.
Telkom will resume wage negotiations on Thursday with two trade unions, following a stayaway which lasted for three days.