Mr Moran still has a number of speaking engagements, including an appearance at the Magill Summer School next week. He is scheduled to speak next Wednesday in a session called, ‘Our economy — the threats to its recovery from within and without.’
Fellow panellists include ex-Central Bank director, Fiona Muldoon and chairman of the Irish Fiscal Advisory Council, John McHale.
A spokesman for the Department said Mr Moran accepted the invitation to speak at Magill before he resigned from the position of secretary general.
Mr Moran has so far not commented on whether he has lined up a new position.
He announced on May 7 that he had tendered his resignation, having been in the position for just over two years, although he would remain in situ until a replacement had been found.
Mr Moran was replaced by Derek Moran, who was previously assistant secretary general at the department. His official first day was yesterday.
John Moran joined the Department of Finance in 2010 as head of the banking unit following a stint at the Central Bank. He is the first non-career civil servant to become secretary general.
It is the first time the Department has had to negotiate gardening leave with a former secretary general.
Appearing before the Oireachtas Finance Committee on May 8, Mr Moran said it was never his intention to stay in the position long term. He had intended to stand down once Ireland was successfully back in the markets and the banking system had been stabilised, he told the members.