Unions representing drivers at Bus Éireann and Dublin Bus will return to the talks table at the Labour Relations Commission later.
It is in an attempt to hammer out a deal ahead of planned strike action on Friday and Saturday of this week.
The dispute centres on the Government and National Transport Authorities' plans to privatise 10% of the two companies' routes and unions want long-term guarantees about their security of tenure.
Chambers Ireland is calling on all parties to urgently find a resolution.
Director of Policy and Communications, Mark O'Mahony, says no one benefits from the discommoding of more than a million people.
Mr O'Mahony said: "We welcome the latest move by the Labour Relations Commission to bring the parties back in for a new round of negotiations.
"The reality is that nobody benefits from a prolonged periods of industrial action and we believe that it is in the interests of both parties to get back to the table and engage constructively and proactively to reach a resolution."