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  • Research Project

    Wealth Tax The Left.

    This research project examines the revenue and distributional effects of a wealth tax on households in Germany. Various scenarios with progressive tax rates and high personal allowances are analyzed, including special provisions for business assets, real estate, and retirement savings. The simulation calculations are based on microdata from the PHF/HFCS and SOEP, supplemented by additional...

    Current Project| Public Economics
  • DIW Weekly Report 18/19 / 2025

    Gender Pay Gap Increases with Age among All Educational Backgrounds

    The average gender pay gap in Germany is 16 percent according to the most recent data. On the occasion of the 2025 Equal Pay Day, this Weekly Report using Socio-Economic Panel (SOEP) data shows that considerable differences according to age and level of education are hiding behind this average gap. For example, the gender pay gap increases significantly with age for people of all educational backgrounds ...

    2025| Fiona Herrmann, Katharina Wrohlich
  • Refereed essays Web of Science

    Earn More Tomorrow: Overconfidence, Income Expectations, and Consumer Indebtedness

    This paper examines whether biased income expectations due to overconfidence lead to higher levels of debt taking. We show suggestive evidence for a link between overconfidence and borrowing behavior in a representative survey of German households (German Socio-Economic Panel–Innovation Sample [GSOEP-IS]). This motivates a laboratory experiment to study causality behind these effects. In two experiments, ...

    In: Journal of Money, Credit and Banking (2025), im Ersch. [online first: 2024-05-24] | Antonia Grohmann, Lukas Menkhoff, Christoph Merkle, Renke Schmacker
  • DIW Weekly Report 12/13 / 2025

    The Gender Pension Gap Grows the More Children a Woman Has

    The gender pension gap, the difference in pension entitlements between men and women, is 32 percent for 60-yearolds according to data from the German Pension Insurance (Deutsche Rentenversicherung). In addition, there is a considerable motherhood pension gap: Statutory pension entitlements for mothers and childless women differ greatly. Pension-related childcare credits, which were introduced in 1986 ...

    2025| Peter Haan, Michaela Kreyenfeld, Sarah Schmauk, Tatjana Mika
  • Refereed essays Web of Science

    The Gender Gap in Fair Earnings Increases with Age Due to Higher Age Premium for Men

    This study explores how gender and age interact in shaping beliefs about fair pay through a factorial survey experiment conducted with German employees. Respondents evaluated hypothetical worker descriptions varying in age, gender, and earnings. While no gender gap in fair earnings was found for the youngest hypothetical workers, a significant gap favoring men emerged with increasing age. This suggests ...

    In: The British Journal of Sociology 76 (2025),1, S. 180-187 | Jule Adriaans, Carsten Sauer, Katharina Wrohlich
  • Refereed essays Web of Science

    Effectiveness and Heterogeneous Effects of Purchase Grants for Electric Vehicles

    We evaluate German purchase subsidies for battery electric vehicles (BEVs) and plug-in hybrid electric vehicles (PHEVs) using data on new vehicle registrations in Germany dur¬ing 2015-2022. We account for confounding time trends and interacting EU-level CO2 standards using neighboring countries as a control group. We find that 40% of BEV and 25% of PHEV registrations were subsidy-induced. The program ...

    In: Environmental & Resource Economics 88 (2025),S. 185–223 | Peter Haan, Adrián Santonja, Aleksandar Zaklan
  • Diskussionspapiere 2123 / 2025

    Basic Income and Labor Supply: Evidence from an RCT in Germany

    How does basic income (a regular, unconditional, guaranteed cash transfer) impact labor supply? We show that in search models of the labor market with income effects, this impact is theoretically ambiguous: Employment and job durations might increase or decrease, match surplus might be shifted to workers or employers, and worker surplus might be reallocated between wages and job amenities. We thus ...

    2025| Sarah Bernhard, Sandra Bohmann, Susann Fiedler, Maximilian Kasy, Jürgen Schupp, Frederik Schwerter
  • Research Project

    A regionally differentiated climate dividend in Germany

    Experiences with the regionally differentiated climate dividend in Austria in terms of effectiveness, acceptance and feasibility in the administration. Contribution of a regionally differentiated climate dividend to the acceptance of climate policy (social compatibility and efficiency) Transferability of the Austrian concept and experiences with implementation to Germany.

    Current Project| Public Economics
  • Diskussionspapiere 2098 / 2024

    Income Effects of Disability Benefits

    We provide novel evidence about the incentive and welfare effects of an increase in the generosity of disability benefits. Importantly, a unique policy variation in Germany allows us to isolate the income effect of a change in benefit generosity. We leverage this quasi-experimental policy variation using an RD design to estimate the effect of increasing disability benefits on employment, earnings, ...

    2024| Sebastian Becker, Annica Gehlen, Johannes Geyer, Peter Haan
  • Externe Monographien

    Education, Expectations, and the Economy: Four Essays in Education and Labor Economics

    Diese Dissertation umfasst vier eigenständige Kapitel, die zur Literatur in der BildungsundArbeitsmarktökonomie beitragen. Sie zeigen auf, welche Determinanten zu denLohnerwartungen von Abiturienten beitragen (Kapitel 1) und wie diese Erwartungenzusammen mit Arbeitsmarktbedingungen zum Zeitpunkt des Abiturs (Kapitel2), Studiengangsrankings (Kapitel 3) und Studiengebühren (Kapitel 4) nachschulischeHumankapitalinvestitionen ...

    Berlin: Freie Universität Berlin, 2024, 188, XLVII S. | Andreas Leibing
177 results, from 1
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