Over 1,000 patients were treated on trolleys at University Hospital Limerick last month.
Trolley watch figures for the month of January show the hospital – which provides Emergency Department cover for North Tipp – was the most overcrowded in the country.
511 people were left without a bed at South Tipp General in Clonmel last month.
The Irish Nurses and Midwives Organisation says the Health Minister needs to fast track the promised increase in hospitals beds.
Nationally over 12,200 people were forced to wait on trolleys or in wards for a bed last month which was the worst on record for hospital overcrowding.
INMO General Secretary Phil Ni Sheaghdha says extra capacity has to be backed up with extra staff, and extra pay.
