General Secretary of the TUI, Tullamore's Michael Gillespie doesn't think an allowance would make much difference for teachers in Dublin.
Calls for an allowance to help attract teachers to Dublin are being dismissed by the Teachers Union of Ireland.
It comes as new figures show there are 18-hundred teaching vacancies across both primary and secondary-level schools.
Principals say the cost of living in Dublin is driving teachers away.
The Department of Education says it is exploring solutions.
General Secretary of the TUI, Tullamore's Michael Gillespie doesn't think an allowance would make much difference:
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