The INMO says hospitals are under staffing pressures.
Some nurses who are self-isolating at home are being asked to come back early due to staffing pressures in hospitals.
That's according to the Irish Nurses and Midwives Organisation, which says there's not enough surveillance testing of medical workers being carried out.
At Naas Hospital in Co. Kildare, 87 staff members are currently off work due to contracting Covid-19 or being a close contact of a confirmed case.
INMO midlands rep Joe Hoolan says there are problems in some hospitals with staff being told to return to work: