Johannesburg - Wage negotiations will continue in efforts to end the strike in the automotive industry, the National Union of Metalworkers of SA (Numsa) said on Friday.
General secretary Irvin Jim said the union would meet employers for further talks later on Friday.
He said workers would not budge until employers gave them a decent offer in the form of a double-digit salary increase.
Jim criticised the employers, saying they were arrogant and hiding behind companies who claimed to not have the funds to increase worker salaries.
He said the companies who were undermining the collective bargaining process had also failed to disclose their financial books.
Numsa sent a stern warning to employers.
"We will collapse collective bargaining if a settlement is not reached in the vehicle industry," he said.
He said the Retail Motor Industry organisation (RMI) had become a power unto itself.
During the press conference, Jim signed off on a settlement agreement, ending a three-week strike by petrol attendants.
Numsa had managed an 11.6% increase for workers, which would mean they got a pay increase of R2 per hour.
The Fuel Retailers Association had agreed to a nine percent increase for next year, and another nine percent increase for the following year.
Striking petrol attendants were expected back at work on Monday.
Jim hailed the strike as a success.