Many of the people that the World Food Programme (WFP) assists in its emergency programmes have migrated as a result of a natural or human-made disaster. This report examines migration as it is practiced by people not only as a result of a crisis, but also as a strategy to reduce vulnerability and maximise income prior to or during a crisis. It proposes guidelines for assessing the role of migration as part of WFP’s emergency food security assessments (EFSAs), and discusses the programming implications of incorporating migration-sensitive analysis into emergency assessments.