General Motors has halted production at its main South African plant because of the strike by the country’s National Union of Metalworkers.
The US car giant has not been able to access component parts for its cars, according to the BBC.
The current strike is targeted at the steel and engineering sector, which makes products for industries such as mines, automotives and telecoms.
"We undertook contingency planning to minimise disruption of supply to our plant and also to ensure sufficient inventory of finished vehicles," company spokesperson Gishma Johnson said.
GM, which is not directly affected by the NUMSA strike, is concerned that if the industrial action lasts more than a few weeks, it will not be able to stockpile cars such as small trucks and SUVs.