This article presents the findings of a study describing Clinical Nurse Educators' experiences, as they recall their transition from staff nurse to the Clinical Nurse Educator role, within a New Zealand District Health Board. Nurse Educator roles influence clinical practice and professional development of nurses, and although designated as a senior role nationally, the complexities and size of the role are poorly understood. A qualitative descriptive methodology utilising transition theory as a conceptual framework underpinned the study. A sample of eight Clinical Nurse Educators from a New Zealand District Health Board were interviewed about their transition from experienced staff nurse to inexperienced senior nurse. Data were analysed using a general inductive approach. Participants found the Clinical Nurse Educator role was more complex than anticipated, with no preparation for the role and sub-optimal orientation periods being provided by the District Health Board. As a result, signs of stress were evident as the enormity of the role became apparent. Consequently, employers need to ensure that appropriate orientation programmes and mentorship are inherent in health care organisations.