Parents who cause fatal injuries to their children as a result of sustained abuse face life in prison under laws that will be introduced to Queensland parliament.
The state government voiced plans to expand the definition of murder in November and it is their first priority when parliament resumes on Tuesday.
It wants to redefine the offence to include the unlawful killing of another if the death is caused by an act or omission with reckless indifference to human life.
"It's about giving justice to the families of these victims," Attorney-General Yvette D'Ath said on Monday.
"But it's also about making sure that those most serious crimes are not treated as manslaughter and receiving a lesser sentence, but are treated as murder as the public would expect."
The reforms will apply to child and adult homicides caused by long term physical and sexual abuse, particularly where victims are young, disabled or elderly.
But the proposal has been slammed by the Liberal National Party as being too weak.
The opposition says child manslaughter should instead carry a mandatory 15-year sentence.
Politicians will also debate proposed laws to criminalise revenge porn. The laws would apply to both sending and threatening to send intimate material without consent, and carry a maximum sentence of three years behind bars.