The Communication Workers Union says it will embark on mass action against Telkom's imminent retrenchments.
In a statement issued on Wednesday, the Union called on Telkom to withdraw all retrenchment notices sent to affected workers.
Telkom said consultations with unions commenced on Monday to inform them of its proposal to restructure four key areas of the business.
Another trade union Solidarity said it had received inside information that the entire process could ultimately affect as many as 10-thousand Telkom workers.