Opposition Leader Tony Abbott has called on Julia Gillard to tell Parliament about the circumstances under which she left a Melbourne law firm in the early 1990s, warning there are "real issues" the Prime Minister must answer.
In a television interview, Ms Gillard lashed out at claims she had left her job as a partner with Slater & Gordon because of an internal investigation into work she had done for a former union official boyfriend accused of corruption.
It was reported at the weekend that when Ms Gillard was questioned by her employers in 1995 she could not categorically rule out that she had personally benefited from union funds in the renovation of her Melbourne home.
Ms Gillard insisted at the time she had paid for all work herself and could produce receipts.
When pushed yesterday if she was asked to resign from the firm as a result of its investigation into a misappropriation of union funds, Ms Gillard lashed out.
"I am not dignifying all of this scurrilous campaigning by going through these things point by point," she said.
"I did nothing wrong. If you've got an allegation I did something wrong, then put it. If you don't have an allegation I did something wrong then let's ask a question that matters to the nation today."
Slater & Gordon's probe related to Ms Gillard's work as an industrial lawyer for the Australian Workers Union and the involvement of her then boyfriend, AWU leader Bruce Wilson.
It has been claimed that a legal vehicle Ms Gillard set up for Mr Wilson in mid-1992 was used by him to defraud several big companies of hundreds of thousands of dollars.
Police and the NSW Industrial Relations Commission investigated but no charges were brought.
Slater & Gordon managing director Andrew Grech said yesterday the firm's review in 1995 found nothing improper.
Mr Abbott said Ms Gillard should explain herself in Parliament.
"I think there are questions she does need to address," he said.