English proficiency is critical for nurses to provide optimal patient care and in advancing careers, but existing course materials often lack authentic workplace needs. Therefore, this study aimed to explore Indonesian nurses' perspectives on the English coursebooks needed to effectively perform professional duties. A mixed-methods design combined both questionnaires (n=60) and semi-structured interviews (n=5) conducted with nurses working in Indonesian healthcare environments. The results showed that nurses prioritized the course material topics directly related to core nursing tasks, such as administering medication, educating patients, and explaining symptoms. Additionally, the course materials should enhance writing skills for clinical documentation and job applications. Concerning language skills, participants emphasized the need for authentic listening, speaking, reading, and writing activities adapted to the nuanced communication demands of healthcare. Examples included understanding detailed medical reports, writing observation notes, reading textbooks, and presenting at conferences. This study further discussed the valuable insights gained from frontline nurses to determine topics and skill focus in the coursebooks to correlate with the authentic language needs faced by nurses in the clinical practice environment. By incorporating target workplace demands, nursing graduates could enter the profession equipped to provide safe and high-quality care. Integrating the needs analysis of frontline nurses was crucial to developing effective English coursebooks and adequately preparing students for the transition from nursing education to clinical practice.