Labor is set to continue its attack on the government's proposed cuts to welfare and the use of those savings to fund child care reforms.
Debate on the omnibus bill dominated parliamentary business on Monday and will resume in the lower house on Tuesday afternoon.
The Turnbull government is keen to get the package through by the end of the week to allow the Senate to debate them at the next sittings starting March 20.
It's expected the bill will save $5.5 billion, which will be used to pay for a major overhaul of the child care system and the future of the National Disability Insurance Scheme.
The government insists the changes are fair, responsible, and provide better-targeted support to families.
But the opposition claims it will hurt pensioners, families, new mums and young Australians while holding child care and the NDIS to ransom.
"Whilst this government does love big business and wants to give big business a $50 billion tax cut, it seems to hate ordinary Australians," Labor MP Matt Keogh told parliament on Monday night.
"This legislation takes much more than it gives."
The Greens and the Nick Xenophon Team have also flagged their opposition to the bill.
NXT MP Rebekha Sharkie told MPs the cuts were too deep but her party was open to negotiating with the government.