The government is expected to face further questions over its handling of Deputy Prime Minister Barnaby Joyce's affair.
Deputy Labor leader Tanya Plibersek has called on the government to be open with the details about the jobs given to Vikki Campion with Nationals MPs after her relationship with Mr Joyce became known.
"The only area in which there is a genuine public interest is in the area of the expenditure of taxpayers funds and there have been questions over the last couple of days about jobs that have been created for Vikki Campion, the expenditure of taxpayer funds on travel," Ms Plibersek told the ABC on Sunday.
"I think those are areas where the prime minister and the deputy prime minister ought to be fully transparent."
The government maintains there was nothing untoward about the jobs Ms Campion held after she entered a relationship with Mr Joyce.
Ms Campion, a former journalist, was initially a media advisor in the deputy prime minister's office before working for cabinet minister Matt Canavan.
When Senator Canavan stepped down from the front bench awaiting a High Court ruling on his citizenship status, she shifted to the office of then-Nationals whip Damian Drum.
It emerged last week that Ms Campion is pregnant with Mr Joyce's child, due in April. Mr Joyce announced late last year that his 24-year marriage to Natalie, the mother of his four daughters, was over.