I wonder how the ratios are decided. 4:1 sounds pretty generous. There are families out there with stay at home mums that have 5 kids, and the mothers there have to do housework too. So the government is mandating here the child:carer hour ratio is better than some actual families.
Do infants actually need the kind of attention these ratios imply? What happened to the era when families with lots of kids would just let them play outside all day?