Thousands of Luas commuters in Dublin face disruption today and tomorrow, as SIPTU workers mount strike action.
Luas drivers are downing tools in a bid to seek a pay rise of up to 54% over the next five years.
But the company that runs the Luas says the strike decreases the opportunity for a pay rise for drivers.
TransDev says the two-day strike - which continues until the early hours of Saturday - will cost the company approximately €200,000.
The strike will see no trams running until 6.30am on Saturday February 13th.
Luas says 7 Day, 30 Day, Monthly and Annual Luas ticket holders will be eligible for a refund.
It adds that Luas tickets will not be valid on other public transport services during the strike.
Another stoppage is planned for next week - Thursday February 18th and Friday February 19th.
These commuters at the Red Cow Luas stop in Dublin explain how they have been affected.
Driver Richard McCarthy explains the reason behind the strike action.
Managing director of Transdev Gerry Madden is apologising to users.
The union representing Luas drivers say Transdev have not been willing to engage in negotiations.
SIPTU transport sector organiser John Murphy says the workers are staging the stoppage as a last resort.
Taxi provider Hailo say they have seen a big increase in demand this morning: