South Africa’s main labor union is threatening to widen a nationwide state workers strike in a campaign for increased wages. Over a million state workers have already walked off the job this month. On Thursday, the head of the Congress of South African Trade Unions, Zwelinzima Vavi, said all two million union members could soon take part.

Zwelinzima Vavi: “In seven days, the whole of this economy will stand still. The wheels in the mining industry that turns for gold to come up into surface, and diamond and coal, will come to a stop. Everything will come to a standstill.”