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Parental Leave, Career Interruption, and the Myth of the "Productive" Break — What Wage Research Actually Shows

By Leon MoriguchiPublished May 15, 2026Updated May 18, 20265 min read日本語版あり
Audience
Parents considering work, return to employment, or skill development during or after parental leave

TL;DR

  • ·The ~40% wage gap that opens between men and women over ten years after a first child (Bertrand, Goldin, Katz) is driven primarily by access to job flexibility, not by what happened during leave — structural constraints outweigh individual learning effort
  • ·Chronic sleep fragmentation in early infancy measurably impairs cognitive performance; the social pressure to "upskill during leave" is incompatible with the actual neurological state of a sleep-deprived new parent
  • ·Remote work did not close the gender caregiving gap during COVID-19; designing explicit time boundaries between work and care is more effective than attempting to run both simultaneously

Contents

  1. Lead
  2. Learning During Leave: What the Reality Looks Like
  3. Wage Profiles After Career Interruption
  4. Remote Work and Childcare: What the Data Showed
  5. Three Practical Framings
  6. Summary
  7. References

Lead

Two feelings coexist for many parents on leave: the anxiety that "doing nothing during leave will leave me behind," and the reality that "between nursing and night wakings, there is nothing left for learning." This article is not here to push you either way. It is here to lay out the data that belong in that decision before you make it — what parental leave actually looks like for learning, how wage profiles change after career interruptions, and what international comparisons suggest about where the real constraints lie.

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