[luckylion]

True, there's less incentive to have large families, and it's a practical issue as well, I suppose. You can have your child around and keep an eye on them while you're working on the family farm, but you can't take them with you into a factory and sit them down next to the assembly line.

Are there plans to do the opposite of OCP? I suppose it's easy-ish to forbid people to have multiple children, but to force them because you now need them?

[awa]

Forcing can be in terms of incentives like tax rebates etc.

[luckylion]

It might be that the incentives offered in Western European countries aren't large enough, but it seems counter-intuitive - we had much larger families when the incentives were much smaller. The long established population has very few children, recent immigrants (from poorer countries) have more, but also show falling birth rates within a few generations. And that's in countries with free education, usually free healthcare for children, tax rebates, financial support from the government et cetera.