Fordecades,scientistshavealertedtheauthoritiesabouttheagingpopulation and its socioeconomic consequences. Number of work carried out in sociology fit withinthe paradigmofthe LifeCourse. These describeanevolution in two stagessince the 19th century. Inthis article,wefocus onthe secondphase characterized bya double process of de-standardization and de-institutionalization. From the example of ends of career, this article attempts to test the hypothesis of a de-standardization of age at the end of the labor market in Belgium. De-standardization involves increasing the diversityofsituations. Statistically,thisprocessshouldleadtoanincreaseinvariancearound the average. This analysis is conducted using retrospective data for the cohorts born between 1905 and 1935, those ending their career between 1965 and 2001.