The HSE says staff will be paid today despite the cyber-attack - but there may be mistakes with the amounts they receive.
It says basic pay and allowances will be paid as normal, but there may be issues with overtime and other extras.
The executive 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.
JP Nolan Return Boost For Wicklow Who Remain Unchanged For Tailteann Test At Croker
CBS News Highlight Greystones' Efforts To Shield Children From Dangers Of Mobile Phones
Uisce Eireann Issue Appeal With A Third Of Irish People Disengaged With Water Conservation
Wicklow Shoppers Urged To Check Ready Meals Following Recall
Former Donard Health Centre Secured For Community Use