DIY retailer Homebase is set to close 42 stores across the UK and Ireland, putting around 1,500 jobs at risk.
The DIY chain is closing the stores via a Company Voluntary Agreement, a procedure used by struggling firms to shut under-performing shops.
Homebase is closing three Irish stores, two of which are in Dublin at Fonthill and on the Naas Road.
The third Irish-based closure will be in Limerick.
Restructuring experts at Alvarez & Marsal will carry out the CVA, which will require the support of landlords.
An official announcement from the company is due later on Tuesday.
Homebase - which has a total of 11 Irish outlets - was acquired by restructuring specialists, Hilco, earlier this year.
It bought the business for £1 after its Australian owners, Wesfarmers, pulled out of the UK market.
It had acquired the business for £340 million two years previously.
This latest restructuring would come on top of a store closure programme the retailer has been carrying out since February.
A total of 17 Homebase stores have been shut this year.
The business also axed 303 jobs at its head office in Milton Keynes.