Insurer Aviva has said it intends to cut 1,800 roles across the group over the next three years.
This is out of a total workforce of around 30,000.
Aviva said it wants to reduce expenses by stg£300m (€338m) per year by 2022.
In a statement, it said: "Cost savings will be achieved through lower central costs, savings in contractor and consultant spend, reduction in project expenditure and other efficiencies.
"This will involve approximately 1,800 role reductions across the group over the next three years, out of a total workforce of around 30,000.
"Aviva will look to ensure that redundancies are kept to a minimum wherever possible, for example through natural turnover. Aviva has engaged with Unite and our employee representative bodies and will continue to consult on specific proposals."
The firm employs 1,580 people in Ireland.
A spokesperson for Aviva Ireland told Newstalk.com: "There will be 1,800 role reductions across the Aviva Group over the next three years, out of a total workforce of over 30,000.
"Aviva will look to ensure that redundancies are kept to a minimum wherever possible, for example through natural turnover.
"Aviva have not yet finalised where the reductions will take place and therefore it is too early to comment on the impact on Aviva Ireland."
Aviva's chief executive officer, Maurice Tulloch, said: "Reducing Aviva's costs is essential to remain competitive and this means tough decisions and job losses which I do not take lightly.
"We will do all we can to minimise redundancies and support our people through this.
"I am also determined to crack Aviva's complexity, an issue which has held back our performance for too long.
"Today's changes will begin to reduce complexity, cost, and duplication, enabling Aviva to be better at serving our customers and delivering stronger results for our shareholders."
Aviva also used its statement to announce a shake-up in the group's structure.
It said it would split its UK life and general insurance businesses to "enable stronger accountability and greater management focus".