Sydney's trains have started running again but with only limited services after yesterday's closure of the rail network.
NSW Transport Minister David Elliott said reduced services would operate across all lines on the Sydney rail network from 5am and would run at a minimum 30-minute frequency throughout the day.
In addition, 150 replacement bus services will operate along major rail corridors.
It comes after a day of chaos and disruption for commuters following the NSW government's shock decision to completely shut down the rail network in the wake of negotiations with the rail union breaking down over the weekend.
Sydney Trains has encouraged rail commuters to find alternative travel tomorrow if possible.
Unions and transport representatives were back in the Fair Work Commission on Monday to thrash out their differences, but the ABC understands there was no resolution, with the matter adjourned until Wednesday.
In a statement, David Elliott said he urged the rail unions "to put their political agenda aside so Sydneysiders don't face more interruptions".
Alex Claassens, from the Rail, Tram and Bus Union, said the government agreed to put on some limited services following talks with the union late this evening.
"It's good news for the travelling public of NSW that common sense has prevailed," he said.
Mr Claassens said rail workers would continue with their industrial action but that would not disrupt the reduced timetable planned for tomorrow.
"We will try to make sure those services can continue as best as possible," he said.
He described the arrangement nutted out tonight as "clunky" and encouraged commuters to plan their journey.
"It does provide a level of service for people who have no other alternative, which we wanted to do," he said.
He said the the arrangement would remain in place until talks resumed at the Fair Work Commission at 10am on Wednesday.
Mr Claassens said rail workers were "shocked and horrified" to wake up this morning to discover there were no train services.
"After a terrible day and lots of discussion, we have landed on a position that means that tomorrow the people of NSW will once again have a train service," he said.
The rail union rejected a claim by NSW Premier Dominic Perrottet that the train network had to be shut down due to safety concerns.
"No, not at all. We dispute that," Mr Claassens said.
"There was no need for them to cancel services today."
He said the union had been trying to negotiate a new enterprise agreement since the old one expired nine months ago.
The Transport Minister said the NSW government would continue to work through the union's list of claims.
