Homelessness increased dramatically in the 1990s and has become a significant problem for Canadian cities. The homeless are at increased risk for both traumatic injuries and serious health problems. Because of significant barriers to access to care, a large proportion of homeless persons will present to the Emergency Department (ED) for acute and routine care. When homeless individuals were asked what was the most difficult aspect of being homeless, negative reactions by shelter workers and health care providers were included as major themes. Despite the recognition that many homeless people are treated in the ED, there is little information regarding the attitudes of ED staff and medical trainees towards these patients and their care. Furthermore, there are no North American curriculum requirements for emergency medicine trainees regarding homelessness or urban health. In the medical setting, exposure alone to homeless patients may negatively impact the attitudes of trainees. We propose to study the attitudes towards homelessness of medical trainees before and after emergency department rotations at an inner city hospital and to define whether implementation of a curriculum on homelessness has a positive impact on attitudes.