Template-Type: ReDIF-Paper 1.0 Title: Navigating Motherhood: Endogenous Penalties and Career Choice Author-Name: Sen Coskun Author-Email: sena.coskun@fau.de Author-Name: Husnu Dalgic Author-Email: dalgic@uni-mannheim.de Author-Name: Yasemin Ozdemir Author-Email: yasemin.oezdemir@uni-bayreuth.de Classification-JEL: E24, J13, J22, J24 Keywords:child penalty, fertility, sectoral gender segregation, job switch, quality-quantity trade-off Abstract: Women strategically sort into "family-friendly" sectors characterized by lower returns to experience but also lower per-child penalties, before the birth of their first child. This pre-birth sorting represents an ex-ante career cost, a "sorting penalty" not captured by conventional measures. We build a heterogeneous agent model of career choice and fertility, incorporating both quality-quantity (Q-Q) and time-expenditure (T-E) trade-offs, to quantify this cost. Our central finding is that despite this sorting penalty being surprisingly small, it reveals an important mechanism: Women at the productivity margin are the switchers and use the Q-Q and T-E trade-offs as their primary, more powerful tools to navigate motherhood and career. Our findings highlight that frameworks excluding these trade-offs will overestimate the fertility responses and career costs associated with policies. Note: Length: 53 Creation-Date: 2025-12 Revision-Date: File-URL: https://www.crctr224.de/research/discussion-papers/archive/dp722 File-Format: application/pdf Handle: RePEc:bon:boncrc:CRCTR224_2025_722