https://www.rte.ie/news/2017/0328/863077-bus-eireann/ (extracts)
Workers at both those companies are to be balloted next week on taking industrial action in sympathy with and in support of Bus Éireann workers.
Speaking on RTÉ's Morning Ireland, SIPTU organiser Willie Noone said it was reasonable to expect that if wages in Bus Éireann are driven down, then workers in Dublin Bus can expect similar cuts.
He said the ballot of workers will take a number of weeks to carry out.