Media Minister Catherine Martin will face questions from the Oireachtas media committee today.
It comes after comments she made on TV last week prompted the resignation of Siún Ní Raghallaigh as chair of the RTÉ board.
Ms Martin maintained she had twice been misinformed about RTÉ exit payments by the former chair last week.
Today's Oireachtas media committee hearing is expected to last around three hours.
Taoiseach Leo Varadkar said he has full confidence in Ms Martin.
Speaking ahead of a summit of EU leaders in Paris last night, Mr Varadkar said Ms Martin probably found herself in a "no-win" situation.
"I have full confidence in Minister Martin. It's a difficult job at the moment, but I think she's handling her brief extremely well.
"We intend to appoint a new chairperson of the RTÉ board as soon as possible... certainly, if we can, ideally next week. There are a few people that need to be approached to see if they're willing to do it."
