Nurses at Beaumont Hospital will defer planned industrial action after an agreement was reached at the Labour Relations Commission.
The action was scheduled to begin next week, but management at the northside hospital have now agreed to increase staffing levels in the department.
The Irish Nurses and Midwives Organisation (INMO) said management have also agreed to continue their efforts to secure additional community beds to address the problem of delayed discharges in the hospital.
INMO industrial relations officer Lorraine Monaghan said that it was a positive outcome for members of Beaumont's emergency department who have "continued to struggle with unmanageable workloads" on a daily basis due to persistent overcrowding and under staffing.
"All barriers to the recruitment of nurses must now be lifted," she said.
"The INMO has requested the continued involvement of the LRC as this agreement will only last if management's proposals are implemented in a timely fashion."
Industrial action had been due to begin at the hospital next Tuesday, in the form of an on-going work to rule, after nurses voted 100pc in favour of it.
This would have involved staff refusing to perform any non-clinical, clerical or administrative tasks - engaging instead in direct care duties.
The INMO said that its members were dealing with gross overcrowding, staff shortages and "overall intolerable and unmanageable workloads".
Its figures showed that there were 31 people on trolleys and wards waiting for a bed at the hospital yesterday morning.