As far as paid parental leave goes I think Australia, NZ, Britain the U.S and the like should take a leaf from the Scandinavian book. In Denmark parents are entitled to share one years paid parental leave at 80% of their full salaries. In Iceland both parents are entitled to a combined nine month parental leave (3 months for dad 3 months for mum and 6 months split as the parents see fit).
[i]https://news.bbc.co.uk/2/hi/europe/4629631.stm[i]

The positive social effects of extended parental leave flow on to many different sectors including and have been linked to reduced problems with teen drug and alcohol abuse, suicide and violence. Better performance at school and lower divorce rates due to a stronger family bond formed in the early stages of a child's development.

Working with teenagers everyday I get to see the effects that a broken family have on these students all too often.