Hi! I am Luisa, and I am a Post-Doctoral Researcher at the Institute of Employment Research (IAB) in Nuremberg.

I am an applied labor economist and working on topics in migration, labor and gender economics.

Here you can access my CV.

You can find out more about my current research below 👇

Research

Discussion Papers

Hammer, Luisa (2025). What about the men, though? Relative wage opportunities and the persistence of employment gaps in couples, IAB-Discussion Paper (No. 01/2025).

Abstract: Gender gaps in employment have narrowed but remain substantial, particularly among couples. To estimate how improved female wage opportunities influence partners' employment choices, I exploit demand-driven wage changes in job tasks and German administrative data. Results indicate women respond positively, albeit at a diminishing rate, to relative wage improvements, while male partners also increase their labor supply in response. Consequently, the work hours gap within couples narrows, but doesn't close and even widens in certain groups. Potential explanations for these patterns building on Becker's household model include comparative advantages for women, and relative income preferences and gender identity norms for men.

Hammer, Luisa & Matthias S. Hertweck (2022). EU Enlargement and (Temporary) Migration: Effects on Labor Market Outcomes in Germany, Bundesbank Discussion Paper 02/2022.

Abstract: EU Eastern Enlargement elicited a rise in (temporary) labour market oriented immigration to Germany starting in May 2011. Taking into account that not all immigrants stay permanently and that outmigration flows are selective, this paper classifies recent EU immigrants into "new arrivals" and "stayers" drawing on administrative social security data (2005-2017). This novel strategy allows us to separately identify their potentially opposing short- and medium-run effects on labour market outcomes in Germany. We find a transitory negative effect on wages among German nationals, particularly at the bottom of the wage distribution; and a permanent positive effect on domestic full-time employment.