Management at University Hospital Waterford are again encouraging both sides to resolve the industrial action which is affecting the facility.
A strike, involving cleaners who are employed by Momentum Support, has now entered its 12th day.
University Hospital Waterford say the on-going picketing is making the delivery of patient care very challenging.
However, they added that management at Momentum are ensuring that the appropriate levels of cleaning services are maintained at the hospital.
Momentum took over the cleaning contract last September, 125 of their workers, who are members of Unite trade union, are striking over changes to their conditions without consultation.
In a statement University Hospital Waterford encouraged the parties directly involved to use the States dispute resolution mechanism's to resolve this dispute.
They say that Hospital Management is actively working to ensure minimal disruption to patient services and apologises for any inconvenience caused by a dispute which they are not party to.
