I’m a post doc in Economics at CREST in Paris (ENSAE / IP) and at ETH Zurich (KOF Institute). My research makes use of data from online job search and recruitment to investigate how labour market imperfections shape job finding and wages. I obtained my PhD from the University of Lausanne, supervised by Rafael Lalive and Michael Siegenthaler. During my PhD, I visited the LSE at the invitation of Alan Manning.

News

Oct 2025: New report on AI and the Swiss labor market

Together with Michael Siegenthaler, we analyse early impacts of large language models (LLMs) on unemployment and job postings across occupations in Switzerland. → Full report

Research

Adapting to Scarcity: The Role of Firms in Occupational Transitions

In progress; with D. Kopp, R. Lalive, M. Siegenthaler Presented at ZEW Mannheim Research Seminar (Mar 2025), IZA Summer School in Labor Economics (June 2023)

This paper examines the circumstances under which firms facilitate occupational transitions, complementing prior work that focuses on workers' decisions. We link unemployment insurance records with application diaries and clickstream data from a recruitment platform to causally assess how candidates' occupational histories shape recruiters' hiring decisions. We find that the average candidate from a different occupation faces a 7% lower contact rate than equally qualified candidates who last worked in a recruiter's searched occupation. Using a new measure of skill overlap, we show that 60% of this penalty reflects that movers meet fewer skill requirements than incumbents. Occupational experience and qualifications further reduce the mover penalty, such that certain candidates returning to a prior occupation face no penalty at all. Finally, recruiters adapt to scarcity and contact more movers in tight occupations. Changes in firm behavior account for one-third of the increase in movers' application success in tight versus slack labor markets.

Guiding Jobseekers to Where They’re Wanted Most: Evidence from Caseworker-Driven Job Search Redirection

In progress; solo-authored

Presented at French Public Employment Services (Jul 2025), UC Berkeley Labor Lunch (Apr 2025), PSE Applied Economics Lunch (Feb 2025), EALE 2024 Bergen (Sep 2024), SKILS Ski and Labor Seminar Lenzerheide (Jan 2024), IZA Workshop: Matching Workers and Jobs Online (Sep 2023), LSE Labour WIP Seminar (Mar 2023)

This paper investigates whether counseling jobseekers to redirect search towards tight labor markets—occupation-region cells with high vacancy-to-unemployment ratios—can improve employment outcomes. I link administrative unemployment records to click-level search data revealing which markets jobseekers target. To address selection into search strategies, I exploit quasi-random assignment of jobseekers to caseworkers who differ in their tendency to redirect clients toward tight markets. Moving from a caseworker at the 10th to the 90th percentile of this tendency increases six-month job finding by 2.5%. The effects are heterogeneous: jobseekers from slack markets benefit from being redirected to tighter markets, while those from already tight markets benefit from reinforced focus rather than mobility. These patterns help reconcile mixed findings in the mobility intervention literature: consistent with theoretical models, what matters is redirecting search toward tight markets, not encouraging mobility per se. There is no effect on job finding in markets that are slacker than the initial market, a pattern that helps identify the redirection channel, ruling out general "better caseworker" explanations. The gains persist over time and do not come at the expense of job quality.

Job Search and Employer Market Power

In progress; with I. Bassier, A. Manning Presented at IZA Workshop: Matching Workers and Jobs Online (Sep 2025)

This paper provides a framework for thinking about how the job search of workers affects the market power of employers. We present a way of thinking about this which encapsulates popular existing models in which employer market power is based on either frictions in labor markets or imperfect substitutability among jobs. We show how this model can be used to compute measures of the extent of employer market power and relates them to popularly used measures of concentration ratios. We use data on the search behaviour of Swiss unemployed to investigate the number of employers being considered by job-seekers using 'clicks' on vacancies to define consideration sets.

Can technology free time? Experimental evidence from an AI chatbot helping caseworkers solve employers’ hiring difficulties

In progress; with J. Barreau, M. Bouju, R. Rathelot

In late 2024, the French public employment service introduced a new AI tool to support caseworkers dedicated to assisting client recruiters in their hiring decisions. Caseworkers support employers through two channels: screening applications from job seekers who apply on their own, and sourcing candidates who have not applied. The tool was designed to help caseworkers when sourcing candidates, and save them time for other tasks. We leverage the randomised implementation of this intervention to measure its impact on job-filling probabilities. We find that the intervention successfully increased the probability of filling posted jobs by between 10 and 15 per cent. While the intervention was intended solely to facilitate the sourcing of job seekers who had not initially applied for the job, we find that the increase in hires comes from both job seekers who were sourced and job seekers who had applied on their own and were screened by the caseworker. Our interpretation is that the AI tool freed up caseworkers' time, allowing them to devote more time to screening applications (and other tasks).

Incidence of corporate taxation

In progress; with E. Baselgia, M. Brülhart, G. Rais, M. Siegenthaler

Policy and tools

Coding and contributions

Policy reports & Media

Teaching

Other