Purpose This study aims to understand whether and how the use of performance measures in the context of healthcare organizations facilitates the dynamics of compromise or whether it creates moral struggles among a wide variety of actors. It offers novel insights into the concept of hybridity by investigating its underlying moral dimension. Drawing upon the sociology of worth theory (Boltanski and Thévenot, 1991, 2006), this paper examines how actors negotiate and compromise over time concerning issues of justice, involving the use of performance measures on a day-to-day basis. Design/methodology/approach The article presents a single case study of a medical unit in a French public hospital. Data were obtained through the ethnographic method, semi-structured interviews and internal financial and accounting documents. Findings Unlike earlier accounting studies, the authors analyze whether, and how, accounting, on one hand, contributes to the dynamics of compromise between actors with divergent values that characterize hybrid organizations, and, on the other hand, increases tensions among actors with convergent values involved in caregiving. This offers practical insights into three relational mechanisms underlying the dynamics of compromise and their limits through the time dimension. Research limitations/implications The authors use a single case study in a country-specific context. Practical implications This study helps managers of healthcare organizations to understand the relationships between the use of performance measures and their impact on the evaluation of worth in practice. Originality/value In terms of theoretical contribution, the authors show how the sociology of worth (Boltanski and Thévenot, 1991, 2006) complements the analysis of hybridity and develop an original approach to understanding the ambivalent role of performance measures in bringing together divergent values within French public hospitals.