After complaining that the store was locked when they arrived for work, the staff of an Iceland supermarket in Dublin staged a protest there.
The business that runs the Iceland stores in the Republic of Ireland has been placed under examination.
A financially troubled company can use examinership, which is similar to administration in the UK, to find new investment.
It is known that some Iceland stores in Dublin did not open on Wednesday.
One employee at the protest site, Coolock Iceland in north Dublin, claimed on social media that they arrived on Wednesday morning only to discover they were unemployed.
Aodhán Rordáin, a Labour TD (MP) for Dublin Bay North, claimed in a statement that a "ridiculous situation" had taken place at Iceland stores throughout Dublin.
He claimed that the company had treated its employees in an absolutely disgraceful manner.
"They arrived for work this morning only to be informed that they have no jobs, and this is an utterly absurd situation.
"This is not how employees should be treated at all. ".
BBC News NI has made contact with Metron Stores Ltd, the company in charge of running the Iceland stores since March.
A temporary examiner has recently been appointed to the company, which is thought to be in debt for £30.8 million.
The business was told earlier in June to remove all imported frozen foods with animal origin from its Irish stores.
The issues at Metron Stores have no bearing on Iceland's frozen food retailers stores in Northern Ireland, which are still owned and run by Iceland.
