"There is no one going back to work, guaranteed 105%, there is no one going to work the night shift today," worker representative Siphamandla Makhanya told local radio after a short meeting with miners on Monday.
Amplats, the world's top platinum producer, resumed operations last week at the five mines in the Rustenburg platinum belt that it had earlier shut down over safety concerns.
The company first threatened the miners with dismissal if they missed work on September 19, before pushing back the date a few more times, with the latest set for Monday evening.
Amplats considers the strike illegal.
"We have given people until the night shift, and the night shift has not started yet. We can check tomorrow," Amplats spokesperson Mpumi Sithole said earlier in the day.
The strikers, who hope to meet with management on Tuesday, are pushing for at least the 11-22% raises that Lonmin miners at the nearby Marikana mine received after a deadly strike that left 46 dead.
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