"It is morally wrong and it is an escalation of a dispute that does not need to be escalated."
SIPTU says a threat by Transdev to dock the pay of Luas drivers is an outrageous and provocative escalation of the dispute.
The Luas operator says it will reduce drivers wages by 10% from this Friday if their strike continues.
The union representing the drivers says the reduction in pay would be illegal as its members are involved in a lawful industrial dispute with the company.
However, Transdev says it's an effort to recoup costs incurred as a result of the stoppages.
SIPTU's Divisional Organiser Owen Reidy told the Last Word this evening it will be challenged: