Promoting health in the workplace is a national and international public health priority, and health promotion is a central aspect of the nursing role. However, nurses’ knowledge of health promotion does not always translate to self-care and there are barriers to some aspects of self-care at work, such as healthy eating. Evidence suggests that rates of overweight and obesity in nurses are relatively high and commensurate with the general population, which has implications for their health and well-being and their delivery of health promotion to patients. This article discusses health in the workplace and some of the evidence on overweight and obesity among nurses, including how this may influence their health promotion practice. The author also considers barriers and enablers to nurses’ healthy eating at work and suggests some approaches that individual nurses and healthcare organisations can take to improve healthy eating.