Telkom, Vodacom, Vodafone and the Department of Communications are being taken to court by the Communication Workers’ Union, it said on Friday.
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.
Telkom said on Friday that only about 2 500 employees, or 16% of those represented in wage talks, had heeded union calls to down tools.
Telkom workers from two South African communication industry trade unions will go on strike from August 1 to 5 over wage demands.