Samwu spokesperson Phumlile Shange said the order was made
on Wednesday.
"This is an interim ruling and we are meant to meet
with the employer of the bus drivers to discuss this further," she said.
The court gave Samwu 25 days to contest the decision.
Piotrans, the company contracted to the city to operate the
first phase of the bus service, said it had met and reached an agreement with
workers.
"The buses should be operating as usual from this
afternoon (Thursday)," said Piotrans spokesperson Dumisani Mntambo.
He said it still planned to meet the unions to discuss the
drivers' demands.
"We have an open-door policy and we are willing to
address their concerns."
Commuters have been stranded since Monday, when bus drivers
decided to go on strike.
Piotrans failed to reach an agreement on a labour dispute
with the bus drivers on Friday, and a strike notice was issued.
Samwu said it was demanding an increase in workers' salaries
and better employment conditions.
The union also wanted a change in the shift system, because
the one currently being used was "strenuous, and slavery".
It also called on Piotrans to pay workers' contributions to a provident fund from the time they were employed.