Johannesburg - A spokesperson for the South African Municipal Workers' Union says some 200,000 workers across South Africa will stop working later this week to protest against official corruption and poor pay.
Tahir Sema said on Monday that the soon-to-be striking workers have no specific wage demands but hope to force the government to put in place "a proper wage structure" so that jobs and associated salaries are properly graded.
Sema says South Africa has up to 300 000 municipal workers.
The strike would put more pressure on Africa's largest economy, which is already reeling from the impact of unresolved strikes in the crucial mining sector.
The agencies S&P and Moody's have downgraded South Africa's credit rating in the aftermath of the strikes.