Ulster Bank has announced a new reporting structure for its business in the Republic of Ireland and Northern Ireland.
The bank said the change in the Republic will allow the business to focus on "building a stronger and simpler bank here".
It said this will enable it to deliver sustainable returns over the medium to long-term while continuing to draw on the scale of its parent - Royal Bank of Scotland - for expertise and services.
As part of the changes, the Northern Ireland business will align more closely with the Royal Bank of Scotland and NatWest businesses in the UK.
In a statement, Ulster Bank said the changes being made today will have no impact on its customers' day-to-day banking.
IBOA General Secretary Larry Broderick said the changes were "a major development in the history of Ulster Bank, so it is crucial that the interests and concerns of customers and staff are taken fully into account".
In 2013, Ulster Bank announced it was making 950 redunancdies as it closed several branches around the country. Those redundancies are still being worked through.