A group of former workers from Clerys have protested outside the company that now owns the store in Dublin.
Around 30 staff, some of whom worked there for 40 years, held a demonstration outside the offices of Natrium at Harcourt Terrace.
The shop's new owner, Natrium, says it understands the concern over Clerys future - and says it plans to create over 1,000 new jobs at the site in the years ahead.
In a statement, Natrium said it wants to support 1,000 jobs through the planning and refurbishment of the building over a two year period.
It adds that "a predominantly retail-led development encompassing other commercial uses, subject to the planning process, will generate a minimum of 1,700 new sustainable long-term jobs in Dublin City Centre."
A Natrium spokesperson said: "The Clerys building can be transformed to create a major new mixed use destination in Dublin City Centre and to create large numbers of sustainable jobs."
Natrium is a joint venture between D2 Private and funds managed by Cheyne Capital Management.
Some 130 staff and over 300 concession workers were affected by Clerys sudden closure last Friday - with liquidators KPMG tellingthem that there was no money to fund redundancy payments or back pay.
These staff members say they want more information about the future of the company from Natrium.
Teresa Hannick, sector organiser with SIPTU, spoke to the Pat Kenny Show here on Newstalk this morning.
"Our priority at this moment in time in our members," she said. "Our members' priority is to get money that is owed to them as soon as possible - they have mortgages to pay, they have rent to pay."
Michael Lavelle, solicitor with Lavelle Solicitors, represents a number of the concession holders at Clerys. He also spoke to Pat Kenny, and started by saying he has yet to get an answer to the question of where the money owed to concession holders is.