6,000 Psychiatric Nurses will refuse to work overtime today and tomorrow, in their dispute over pay and staffing.
It follows a 24 hour strike by 37,000 nurses and midwives which ended at 8 o'clock this morning.
INMO members will stage another 24-hour strike next Tuesday, as their dispute with the government over pay and retention is no closer to a resolution.
The HSE says departments are expecting a surge of patients who may have put off attending yesterday.
