The HSE says staff will be paid today despite the cyber-attack - but there may be errors the amounts they receive.
Basic pay and allowances will be paid as normal, but there may be issues with overtime and other extras.
The HSE says any problems will be fixed in the coming weeks.
Staff currently aren't able to make travel and subsistence claims, as the system is down as a result of the cyber attack almost two weeks ago.
Services continue to be disrupted at hospitals across the region, with the manager of Mayo University Hospital warning it will take months, rather than weeks, to get back to where they were before the ransomware attack.