Remembering One's Work History - Memory Recall in Retrospective Surveys and Social Construction of Data. This article analyzes the role of memory in the producuon of rétrospective data concerning work history trajectories. It is based on the comparison of two surveys carried out in 1989 and 1993 on the same sample populations of youths and concerning. in part, the three and a half years following the end of their education. The article examines the nature of the collected information and reveals two essential dimensions in the social construction of recall of career developments: the subjective production and reinterpretation of one's own trajectory for the survey: and the translation of biographical events into official categories which are increasingly vague (unemployment, work. inactivity). The article highlights the discrepancies between the answers to the two surveys, shows that the discrepancies cannot be reduced to a simple question of data reliability, and reveals the social processes governing entry into a professional career trajectory.