O'Briens has 109 franchises in the UK
O'Briens Sandwich Bars has confirmed that its UK business has entered into administration.
Cameron Gunn of ReSolve Partners was named by the High Court to be the administrator for the firm.
The sandwich firm expects that "most stores can remain open, and jobs preserved, if reduced rental terms can be agreed with landlords".
The firm has 109 franchises in the UK. The Irish outlets are not affected by the administration process.
Brody Sweeney, chairman of O'Briens said the firm's priority was to "secure jobs and the future livelihoods of the firm's franchisees".
Mr Gunn said he expected the Dublin-based business to continue business as usual while it "seeks interest in the properties as a going concern".