As a reaction to the medical workforce shortage in Australia, a large expansion of undergraduate medical education has occurred through the provision of funding of additional medical student places. As a consequence, the number of medical graduates is anticipated to increase by as much as 90% with a peak in numbers anticipated in 2012. With ED already under pressure, this increase has serious implications for ED, particularly the delivery of intern and student teaching. This integrated review describes potential challenges that might arise from the predicted increase in intern numbers working in ED. A structured literature search was conducted from which 44 directly relevant articles were identified. We discuss the possible impact of an increased number of medical graduates on emergency medical staff, education, supervision and feedback to interns, and given the potential impacts on the education of junior doctors; we review the purpose and implementation of the Australian Curriculum framework for Junior Doctors in relation to their learning requirements. Although there is consensus by most postgraduate bodies that the core emergency term in emergency medicine should be retained, the impact of increased intern numbers might dramatically affect the clinical experiences, supervision and educational resources in the ED. This might necessitate cultural changes in medical education and ED function.