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IAB Colloquium

The discussion series "Labour Market and Occupational Research (IAB-Colloquium zur Arbeitsmarkt- und Berufsforschung)" is a forum where primarily external researchers present the results of their work and discuss these with experts from IAB. Practitioners from the political, administrative and business fields are naturally also welcome.

Child Penalty Estimation and Mothers’ Age at First Birth

IAB-Colloquium with Dr. Lukas Riedel, ZEW

We show that the widespread approach to estimate the career costs of motherhood - so-called “child penalties” - is prone to produce biased results, as it pools first-time mothers of all ages without accounting for their differences in characteristics and outcomes. We propose a novel method building on the recent advances in the difference-in-differences literature to address this issue.

Applied to German administrative data, our method yields 28 percent larger post-birth earnings losses than the conventional approach. We document meaningful effect heterogeneity by maternal age in both magnitude and interpretation, highlighting its key role in understanding the impact of motherhood.

Joint with Valentina Melentyeva

Date

27.10.2026

, 1 p.m. until 2 p.m.

Venue

Institute for Employment Research
Regensburger Straße 104
90478 Nürnberg
Room Re100 E10

or online via MS Teams

Further information

Researchers who like to participate, please send an e-mail to IAB.Colloquium@iab.de