South Africa platinum miners to strike
21 January 2014 Last updated at 09:00 GMT
On Monday, members of the Association for Mineworkers & Construction Union (AMCU) in South Africa issued mining companies with notices to go on strike within 48 hours.
This means that on Thursday, workers will down tools at three of the largest platinum mines in the world.
South Africa's finance minister has raised concerns about the impact the strike will have on the economy.
Analysts are also concerned about the broader impact on global markets, especially major importers of platinum in Asia.
The BBC's Lerato Mbele reports.