We could cap it to only 2 or 3 times per person, to prevent someone just having a bunch of kids for money (although, as a parent, the idea that six months of salary would make having a kid financially beneficial is laughable)
You want a steady population level, whether via births, or immigration, or both.
We don't want an aging population that has to be supported by a shrinking working-age population, but we don't want to be trapped in a growth bubble either. We want sustainable population with ever increasing quality of life due to scientific and technological advancement.
Population growth might be truly desired if we get to colonizing other planets…
Let’s stop pretending that this is some fantastical idea. Good employers in the United States do this today. Employers across the world do much more than this. Or perhaps you’re ignorant of Sweden’s 240 days of paid parental leave per parent?