The Taoiseach says it is up to the Central Bank to impose sanctions on lenders who have not adhered to the code of conduct on mortgage arrears.
Enda Kenny has also told the Dáil that he would expect these sanctions to be publicised.
It comes after a new report shows some banks have pushed on with legal action against struggling homeowners, even after they have agreed a repayment schedule.
The Central Bank has been looking into how seven unnamed lenders treat people in arrears on their homeloans.
It also found some banks continued to make direct calls to customers, despite the fact that the mortgage holder had appointed a third party to handle the issue.
Some mortgage lenders continued to look for extra payments, on top of an agreed repayment schedule.
The Taoiseach says the Central Bank must take action, and allow the public to see it is taking action:
Bernard Sheridan is director of consumer protection at the Central Bank. He told Newstalk Breakfast they cannot yet name and shame those involved.
The Irish Mortgage Holders Association says the Central Bank should not be responsible for monitoring lenders.
Chief executive David Hall thinks the institution is too closely associated with commercial banks: