Shamed Monsignor Joseph Creegan has swapped his calling for an Inland Revenue call centre.
Clerical Whispers revealed last month how the 66-year-old had been sacked over his relationship with the married parishioner.
But just days after being suspended two weeks ago, Creegan began working as a £15,000-a-year telephonist for Her Majesty's Revenue and Customs.
A colleague said: "He doesn't speak to anyone and comes across as quite arrogant. He must be to walk into a busy office and take his seat while he is splattered all over the papers. It must be debatable whether a man willing to break holy vows by cheating with another man's wife should be looking at the honesty of others."
Creegan's 62-year-old married lover exposed their affair to his bishop, Vincent Logan, after being dumped by the priest.
She claims he left her to buy a home with divorcee Anne Ogden, 48, who he counselled during her marriage split.
Creegan - who preached at St Peter & St Paul's Church in Dundee - has now bought a £300,000 home with Ogden in Newport-on-Tay, Fife.
Clerical Whispers revealed he was a frequent overnight visitor - although he insists there was no sexual relationship.
Ogden's ex-husband Graham told two weeks ago how Creegan urged him to leave his wife.
Bishop Logan, in charge of the Dunkeld diocese, has apologised to Scottish Catholics for the hurt caused by his monsignor.
Creegan clocks in at the HMRC call centre in Dundee's Technology Park, just a short drive from his church-bought luxury apartment in the city's trendy Riverside.
His continued occupancy in the flat has provoked fury among the local Catholic community.
One added: "There were eyebrows raised at the time when the diocese bought three of these luxury flats for retired priests.
"It coincided with an appeal by the bishop to raise £4million for the diocese and did not go down well at all."
Creegan refused to comment on his new job when approached by the Sunday Mail last week.
He remained tight-lipped and shook his head in annoyance when he arrived at the call centre at 8.30am on Friday morning to begin his eight-hour shift.
Last night, an HMRC spokesman said: "We cannot comment on individual cases but anyone will be considered for a post within our organisation regardless of their past."
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