@TechReport{iza:izadps:dp18826,
            	author={Cerina, Fabio and Dienesch, Elisa and Monge-Naranjo, Alex and Moro, Alessio},
            	title={The Anatomy of Polarization: Evidence from Worker Flows},
            	year={2026},
	month={Jul},
            	institution={Institute of Labor Economics (IZA)},
            	address={Bonn},
            	type={IZA Discussion Paper},
            	number={18826},
            	url={https://www.iza.org/publications/dp18826},
	abstract={Using a French administrative panel following workers over 1984-2021, we quantify how worker flows account for employment polarization. We trace job-to-job flows across manual, routine, and abstract occupations, and flows between employment and non-employment. Polarization emerges after 1994 mostly through a shift in the latter: a collapse in entry into routine jobs, concentrated in routine-cognitive occupations. Job-to-job upgrading from routine to abstract remains large and stable, with non-college workers accounting for 76% of net flows. Manual employment grows mainly by absorbing entrants. Polarization reflects sorting at entry and re-entry rather than incumbent displacement, motivating life-cycle models incorporating both margins.},
	keywords={labor market polarization;worker flows;occupational mobility;routine-biased technological change;longitudinal data},
            }