Background: The professional identities, profiles and representations of Burundian health workers remain insufficiently explored. Our twofold objective is to identify the different socio-professional profiles of first-line caregivers and to explore their respective representations of health workers and work., Methods: The first study describes the overall population of the 1047 staff members employed in 2014-2015 in 62 health centers. The second is a cross-sectional survey conducted in April 2014. Using IRAMUTEQ© software, we conducted textology analysis of the structure and contents of 911 respondents' representations via 3 free associations with regard to 6 questions on the "good worker" and the "what renders one capable of doing good work"., Results: At the normative level, among all categories of staff, a relational role is a foundation of professional identity, while technical or administrative functions remain marginal. At the positional level, responses differed according to initial qualification level but not as a function of their role with patients or their professional experience. Three socio-professional categories emerged. The most qualified category (one-quarter of the population) consists primarily of male caregivers, with a high turnover rate (4 years) associated with prospects for further training and career development. These persons present the most professionalized representations of the worker and work. The second quarter has an average level of qualification and turnover (10 years), and is mainly composed of female caregivers with limited professional perspectives. This group's representations are less technical and more patient-centered. Finally, the remaining half consists of relatively low-skilled staff members in charge of technical and logistical support, who are likely to spend their entire career in the same center (>20 years). Largely disregarded by the health care system and its funders, they have few opportunities for training or advancement and despite their long experience, maintain profane representations of workers and work., Conclusion: Our results shed light on the predicament of unskilled staff members whose expectations are rarely taken into consideration, even though they represent a significant proportion of the workforce, perform tasks essential to quality of care, and serve as bearers of the memory of their hospital center. These results also highlight the compartmentalization of practices and knowledge between categories of workers and underscore the failure of continuous training strategies targeting the unskilled., (Copyright © 2021. Published by Elsevier Masson SAS.)