The nurses' dispute is entering its third week as unions plan to widen industrial action.
Eight health facilities will be targeted in the next two days by the Irish Nurses Organisation and the Psychiatric Nurses Association in pursuit of better pay and working hours.
Tomorrow, nurses will stop work from 11am in hospitals and mental health facilities in Cork, Leitrim, Louth and Sligo.
Further one-hour work stoppages will be staged on Wednesday at St James's Hospital in Dublin and at hospitals and psychiatric centres in Clare, Laois and Offaly.
A meeting will take place this morning between management at Sligo General Hospital and INO representatives where both sides are expected to come up with a contingency plan for the running of the hospital during the one hour work stoppage.
It is not yet known if any operations or clinics will be cancelled as a result of the action.
Sligo General is an acute hospital serving counties Sligo, Leitrim, south Donegal and west Cavan and has a population catchment of 213,000.
Meanwhile, the nurses' work-to-rule is continuing.