Union officials from Dublin's four local authorities will meet today to decide a strategy to oppose the outsourcing of waste disposal services in the capital.
SIPTU shop stewards at the meeting also intend to elect a strike committee.
It comes as talks continue between the union and Dun Laoighre-Rathdown Council in the dispute over the council's plan to outsource waste collection to a private company.
Workers in Dublin's three other local authorities have already voted to strike if the outsourcing in Dun Laoighre-Rathdown goes ahead.
Paul Smyth of SIPTU says outscourcing in one local authority paves the way for massive job losses in other councils.