Second Luas strike 'almost certain'
The Luas is almost certain to grind to a halt for a second 48-hour strike next week.
And Siptu is set to serve notice of a third disruptive strike on Monday, which is likely to take place in the second week of March.
The union has revealed that it will not call off industrial action even if it is invited to fresh talks.
It said a second strike on the Red and Green lines next Thursday and Friday will not be suspended unless it reaches an agreement with the tram operator, Transdev, on "significant" pay rises.
And last night it rejected the company's offer that it would consider wage increases of between 1pc and 3pc.
Sources indicated that Siptu is likely to demand at least 5pc to edge closer to agreement.
The union is now considering 24-hour strikes as well as further 48-hour stoppages from the week of March 7.
Notice of industrial action has to be served 21 days in advance under a collective agreement with the company.
Siptu said it was likely to serve notice on Monday, which would mean there would be a two-week break before a third strike.
Meanwhile, the Teachers' Union of Ireland (TUI) has called off the threatened one-day strike that would have closed more than 350 second-level schools two days before the General Election.
The decision not to go ahead with the one-day stoppage, planned for Wednesday, February 24, follows contact between the union and Education Minister Jan O'Sullivan.