I have a better idea.  Let's do away with parenting completely.  That way, NEITHER parental unit loses out on their economic potential.  

It would go like this:

Two (or more) economic units decide to combine their dna to produce another economic unit.  On their lunch hours or after 6pm, or on a weekend, they go down to the local government-run Ministry of Reproduction office and deposit some dna.  

9 months later, the new unit is decanted whereby the donor units get to approve the completion of the product and appraise the quality.  Upon passing the quality assurance, the new unit is then sent to a government-run institute to be raised until s/he is old enough to be a productive worker unit.

No fuss, no muss.  Neither donor unit loses economic potential, and the economic future of our Great Nation is assured.