A federal anti-corruption watchdog could be one step closer as parliament prepares to vote on a proposed model.
While the government believes it has struck the right balance to produce a robust integrity body, crossbenchers will continue to push for several amendments to the model.
Independent MP Zali Steggall said while the proposed model would help increase accountability and transparency, she did not believe it went far enough.
"At the moment there is much too much provision in this bill that keeps it behind closed doors and provides a whole different standard for politicians than the rest of the public," Ms Steggall told parliament on Wednesday.
Ms Steggall flagged problems in the bill to do with limitations on public hearings, the definition of corrupt conduct and the make-up of the commission.
"It is so incredibly important for the Australian public to have trust ... and here is an opportunity for the government to step up to the plate," she said.
Fellow independent Kylea Tink urged stronger protections for the commission's independence and ongoing funding to be protected no matter which party is in government.
Attorney-General Mark Dreyfus said it was the government's "sincere hope" that appointments to the commission would receive multi-partisan support.
Appointments will be need to be approved by a parliamentary committee following a recommendation from the attorney-general.
Mr Dreyfus said the appointment process would be robust and merit-based.
The government has also committed $262 million over four years for the commission's establishment and operation.
Independent MP Dai Le, who represents the multicultural electorate of Fowler, pushed for the commission to ensure anti-corruption measurers would not negatively impact the mental health of witnesses called to give evidence.
"While I strongly support any measures that reduce corrupt conduct, investigations cannot result in people feeling such pressure that will lead them to take their own life," she said.
"We need to be cognisant of the repercussions of such public investigations on the lives of people, especially when it comes to witnesses of culturally and linguistically diverse backgrounds."
Mr Dreyfus said the government would improve safeguards for witness wellbeing, particularly for people who do not speak English as their first language or live with a disability.
Prime Minister Anthony Albanese said his government's proposed model has been designed using the best features of integrity bodies at a state level.
"An anti-corruption body is needed that no government can either direct or can weaponise," he said.
"The establishment of a national anti-corruption commission will change federal politics for the better."
Following a late night sitting, the House of Representatives will vote on the proposed national integrity commission and suggested amendments on Thursday.
The Senate has extended its sitting calendar so the laws to establish the commission can be passed before parliament finishes for the year.
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