Bookmaker Paddy Power is to close 57 betting shops across Ireland and the UK, with almost 250 staff facing redundancy.
Parent company Flutter UKI confirmed its intention to shut 28 shops in Ireland, one in Northern Ireland and 28 in the UK.
They said the decision was made following a review of its high street estate.
The company said impacted workers will be offered redeployment opportunities where possible but the closures will lead to a number of job losses. The company said it is now consulting with staff and will provide support to those affected.
A Flutter UKI spokesperson said: “In light of increasing cost pressures and challenging market conditions, we can confirm that we will be closing 28 shops across Ireland within the next month.”
“We are continually reviewing our high street estate, but it remains a key part of our offer to customers, and we are seeking to innovate and invest where we can as we adapt to different customer trends and needs.”