The Psychiatric Nurses Association has suspended next week's strike action.
Its members were due to down tools on February 19, 20 and 21.
In a statement, it says both sides have agreed to re-engage at the Workplace Relations Commission on Monday.
"Today, representatives from the PNA attended the Labour Court in relation to our ongoing recruitment and retention dispute.
"At this hearing the issues were discussed and the membership of the court were informed of the positions of both parties.
"The court suggested that the parties re-engage under the auspices of the WRC in order to resolve any outstanding issues prior to returning to the court.
"Both parties have now agreed to re-engage with the assistance of the WRC on Monday 18th February prior to a reconvening of the Labour Court on Wednesday 20th February.
"At this point in time, no agreement has been reached between the parties that would resolve the recruitment and retention crisis within the mental health services.
"We hope that further engagement will rectify this.
"Following a request to suspend our strike action in order to facilitate the completion of this process, the strike action planned for February 19th, 20th and 21st is now suspended.
"We will provide further updates as the process progresses."
It comes after the union attended the Labour Court today in relation to its ongoing recruitment and retention dispute.
Monday's talks will come ahead of another meeting of the Labour Court on Wednesday.