Labor has ramped up pressure on the government over allegations surrounding Deputy Prime Minister Barnaby Joyce's affair, demanding Prime Minister Malcolm Turnbull explain the creation of a series of well-paid jobs for Mr Joyce's partner.

Malcolm Turnbull and Barnaby Joyce in Parliament this week. Credit:Alex Ellinghausen

Vikki Campion, a former staffer for the Nationals leader who is now expecting a child with him, was moved to the office of Resources Minister Matt Canavan and then, after his temporary resignation last year over dual citizenship concerns, to the office of Nationals MP Damian Drum.

Mr Joyce's relationship with Ms Campion, 33, had caused dysfunction in the Deputy Prime Minister's office and saw her shifted to the specially-created position with Senator Canavan, the first of two appointments personally approved by the Prime Minister, The Daily Telegraph reported this week.

"I think it is time for Malcolm Turnbull to give a proper statement about what's happened there," Labor's finance spokesman Jim Chalmers said on Saturday.