Few diffusers and many bottlenecks: the French labor market according to statistical physics
Peer-Reviewed Publication
Updates every hour. Last Updated: 14-Jul-2025 12:11 ET (14-Jul-2025 16:11 GMT/UTC)
How long have you been doing your current job? Have you ever thought about trying a new profession? How difficult does change seem to you? The current rapid transformation of the labor market is putting many workers to the test: they struggle to keep up and move into new roles, while at the same time companies are having difficulty finding qualified personnel. A new study has analyzed the French labor market using methods from statistical physics, and found that over 90% of jobs today function as bottlenecks: they are easily accessible, but once entered, they become traps from which it is hard to move elsewhere—even when other opportunities are available.
The study, conducted by Max Knicker, Karl Naumann-Woleske, and Michael Benzaquen of École Polytechnique in Paris, and published in the Journal of Statistical Mechanics: Theory and Experiment (JSTAT), provides a detailed mapping of accessibility and transferability characteristics within the French occupational network. It reveals strong structural rigidity in the overall labor system and offers a basis for understanding what kinds of interventions and policy decisions might help to break this deadlock.
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