As part of its mission to conduct epidemiological surveillance of occupational risks, Santé publique France, in close collaboration with the Occupational Health Inspection Service (Directorate General of Labor), has operated a surveillance program for occupational diseases since 2003. The objective is to document occupational diseases and the biomechanical, physicochemical, or psychosocial-organizational factors contributing to their occurrence. It also aims to contribute to the development of the list of occupational diseases recognized by Social Security. The program relies on the voluntary participation of occupational physicians. This document presents data from the MCP Fortnightly Surveys conducted in 2019 in the Pays de la Loire region.