Both sides in the Dublin bus dispute will attend talks today in a bid to resolve the row over pay.
The unions say postponing industrial action will only be considered, if the company is willing to engage in meaningful discussions.
Six days of strike action have already taken place - further stoppages are planned for Tuesday and Wednesday as well as eleven more days in October.
Dermot O'Leary from the NBRU union says today's talks at the Workplace Relations Commission will not be easy: