Personally, I disagree completely with the idea of parental leave. If it's important to a society that women stay home to look after their babies, then, that society would make sure that the wages given to a married man were up to the task. As we seem to have created an economy where it is difficult if not impossible for most women to stay home to look after their children, getting the tax-payer to fund the birth of children and the employer to keep the job open is imposing an unreasonable burden on everyone and entrenches the status quo, which doesn't help anyone except the ever-growing and intrusive State.
Rather than getting the State to pay, it would be nice if politicians started looking at how to encourage stable couples to have children and rewarding them for that by letting them keep more of their own money, rather than taking money off these people to fund the dysfunctional.
And how on earth did we change from having a single earner economy to a dual earner economy? I've heard Muldoon did it, but I don't know how.