The Taoiseach said it is "morally wrong" to expect people to pay into defined-benefit schemes when they may never draw a benefit from it.
Speaking in the Dáil, Enda Kenny said the taxpayer can't become the paymaster for pension schemes that "are going to go down".
He said the Government has yet to discuss submissions about what to do about defined benefit schemes that are in financial difficulty.
The Taoiseach said previous Governments are to blame for allowing this situation develop with light touch regulation and the Government needs to decide now what to do.
"There's a great deal of work to be done here before the government can arrive at a comprehensive policy and a legislative framework," he said.
"It's been going on for many years, we've had a couple of serious court cases about it.
"You don't want a situation where the taxpayer becomes the paymaster for all of these schemes."