Nurses in hospital Emergency Department nurses will go on strike on December 15th.
INMO members have voted overwhelmingly in favour of industrial action that will include a strike.
INMO General Secretary Liam Doran says 92% of members voted in favour of industrial action, and the strikes will continue on an on-going basis into the New Year until nurses' demands are met.
The first strike on 15th December will affect one hospital in the West / Northwest hospital group, and in a different hospital within the group on any subsequent strike days.
Nurses claim Emergency Departments are overcrowded and understaffed, and say they feel ignored by the government and HSE management.
The INMO is to notify the HSE in the coming days which hospitals will be involved on the 15th - but say that an all-out, nationwide strike is a possibility in the new year.
The union says this campaign of industrial action is being taken as a last resort, and after 10 years of discussions and broken promises.
In the first ten months of this year, almost 80,000 patients found themselves on trolleys in Emergency Departments or overcrowded wards – which represents a record level of overcrowding.
Today, there are 339 patients on hospital trolleys across the country, with 22 at UHG, 3 at Portiuncla in Ballinasloe and 4 on trolleys at Sligo Regional Hospital.