Luas workers have escalated their pay dispute and are serving strike notice for six further days of strike action later this month.
Employees had already been on strike for eight days with a further 48-hour stoppage scheduled for April 23-24.
RTÉ report that SIPTU have served notice of industrial action on Luas company Transdev for 28 April, 4 May, 13 May, 20 May, 26 May and 27 May.
All strikes will last 24 hours except for May 26th which will only last 4 hours.
Staff are objecting to bringing in lower wages for entry-level workers among other things.
