The disgraced former Treasury official behind the OzCar affair is believed to have won a payout from the federal government for ill health.
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However, the details of Godwin Grech's settlement remain confidential.
Mr Grech's two decades as a public servant ended in 2009, after he admitted leaking information and forging an email that accused the government of doing favours for friends.
The false allegations sparked several investigations and led to the demise of Malcolm Turnbull as leader of the Coalition.
Mr Grech spent more than a month in the psychiatric ward of a Canberra hospital for depression as the OzCar affair played out.
He quietly sold his Calwell home in 2010 and moved in with his parents in Melbourne. He has since disappeared from public view, though he wrote an opinion column last year supporting the Coalition.
Mr Grech's lawyers lodged three cases against the government's workplace insurer last year.
The matters went before the Administrative Appeals Tribunal but were settled out of court in June.
The deal remains secret, though the tribunal will hold a hearing this week to consider a Fairfax Media request to see the case's documents.
It is understood that Mr Grech's claims involve his ill health before his allegations.
In a 2009 statement to the Auditor-General, who investigated the allegations, Mr Grech said he had been suffering chronic kidney, bowel and bone disease, as well as clinical depression, in the eight months he worked to implement the OzCar scheme, which was part of the government's stimulus spending after the global financial crisis.
Mr Grech, who was a senior Treasury executive at the time, said he had worked between 60 and 85 hours each week, was hospitalised twice, took several weeks' sick leave and lost 10 per cent of his body weight.
with Markus Mannheim