It comes after revelations about RTE's extra payments for presenters.
Dee Forbes has announced she is resigning as Director General of RTE with immediate effect.
In a statement just issued, she says as Director General she is the person ultimately accountable for what happens within the organisation.
It follows the ongoing controversy surrounding the extra payments given to Ryan Tubridy.
Dee Forbes says she's deeply sorry for what has happened and her part in the episode, and she's apologised unreservedly to everyone.
She adds the RTE Board has not treated her with anything approaching the levels of fairness, equity and respect that anyone should expect as an employee, a colleague or a person.
Chair of the Public Accounts Committee and Laois Offaly TD Brian Stanley had said he expected the previously suspended Director General to attend a hearing at the Oireachtas.
RTÉ say representatives of their Board and Executive will be attending the Joint Oireachtas Committee and Public Accounts Committee this week.
The Taoiseach has said Dee Forbes should appear before Oireachtas Committees this week despite her resignation as Director General of RTÉ.
This morning Leo Varadkar said he did have confidence in the RTÉ board, and the terms of reference for an external review into the incident will go to Cabinet tomorrow.
He also said Dee Forbes should publicly give more details of her role in events:
Laois' Claire Byrne opened her radio show this morning by outlining she was off air last week because of annual leave.
She also said her former salary when hosting Claire Byrne Live, along with the radio show, was €350,000.
The Mountrath woman said it has now gone to €280,000 with just the radio show - but did get €25,000 for hosting quiz show 'Ireland's Smartest' earlier this year.
The National Union of Journalists says the resignation of Dee Forbes raises several fundamental issues.
In a statement, the NUJ says it would now be appropriate for the Chair of the RTÉ Board to meet with each member of the Executive Board.
Secretary of the Union Seamus Dooley says it would be to clarify their individual involvement, if any, or their knowledge of the arrangements to facilitate additional payments to Ryan Tubridy.
The statement goes on to say it would be a matter for the board to deal with the outcome of those meetings.
The ongoing situation at RTÉ is a 'kick in the teeth' for staff, according to its former midlands correspondent.
Ciaran Mullooly says the region felt the effects of cuts throughout his time at the State broadcaster:
He says current and former staff feel they've been lied to:
The RTÉ board has said it will issue a detailed statement tomorrow in relation to Ryan Tubridy's pay since 2020.
It will also publish as much as possible of the Grant Thornton review the board received last Monday ahead of this story breaking.
It will not include details of payments to Ryan Tubridy between 2017 and 2019, which are still being investigated.
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