Résumé : ABSTRACT Background Increased workload is associated with a higher prevalence of missed nursing care. Aim Describe the prevalence of missed care in intensive care units (ICUs) and identify the workload scale most strongly associated with this prevalence. Study Design A cross‐sectional survey was combined with a longitudinal study conducted in 2024, between 15 January and 15 April, in France to assess the workload. A total of 1271 nurses working in 61 ICUs completed the questionnaire one time per shift. Results A total of 72.3% of nurses reported at least one missed care. The Nursing Activities Score provided the strongest association with the prevalence of missed care compared to patient‐to‐nurse ratio and the Practice Environment Scale of the Nursing Work Index. Conclusion The prevalence of missed care and nursing workload was high. Nurses tended to focus on direct patient care. Relevance to Clinical Practice Continuously assessing the prevalence of missed care can be a valuable tool for managing workload in ICUs.