The Minister for Transport says that indefinite Luas strikes are 'not acceptable'.

Pascal Donohoe was responding to claims from the Luas drivers' union SIPTU, which says it can't rule out an 'all-out' strike.

More industrial action looks inevitable after members rejected a pay deal yesterday, offering rises of almost 19 per cent.

It means there will be no trams in Dublin on Easter Sunday and Easter Monday after staff overwhelmingly rejected a pay deal offering rises of almost 19%.

Staff are also due to walk off the job again next month for another two 48-hour stoppages.

But Minister Donohoe says that needs to change: