Federal Liberal MP Stuart Robert will retire from politics, leading to another by-election in Queensland.
The shadow assistant treasurer made the announcement on Saturday morning, saying he wanted to focus on family after 16 years in politics.
"My family has stood with me throughout this time, through thick and thin," Mr Robert said in a statement.
"It is now time for my family to have a husband, a father and a son to stand by them."
Mr Robert served as the minister for veterans' affairs, the minister for the national disability insurance scheme and the minister for government services under the Turnbull and Morrison governments.
He acknowledged his time in parliament had "not been the smoothest ride", saying people "try to throw the kitchen sink at you".
His comments came amid allegations he was linked to a Canberra lobbying and consulting firm that helped companies secure lucrative government contracts.
A government review found 19 contracts needed further investigation over a lack of appropriate record keeping and were not considered as having delivered bang for buck.
Mr Robert denied any wrongdoing, saying there were no findings of clear misconduct.
He also fronted the Royal Commission into the Robodebt Scheme in March, where he admitted he had personal doubts about the way debts were being calculated.
Mr Robert said he continued to publicly back the Centrelink scheme due to his obligations as a cabinet minister.
In his retirement statement, the Liberal MP maintained he was proud of what he had achieved in politics, saying it had been a privilege to serve the Australian people.
He also called for a more civil federal parliament.
"I do fear division has well and truly entrenched itself in the current parliament," Mr Robert said.
"A kinder and gentler parliament it is not."
Mr Robert said he had some final duties to fulfil over the coming weeks before finishing up.
His retirement will trigger a federal by-election in the northern Gold Coast seat of Fadden.
It will be another test for the federal opposition, who lost the Aston by-election in Victoria earlier this year.
It was the first time a government won a seat off the opposition at a by-election in more than 100 years.
© AAP 2023