This is a report of the Proceedings of the Human Factors Case Workshop held at EUROCONTROL from 26 to 28 November 2007. The workshop marked the launch of the revised HF Case process. It brought together around 100 participants from Europe representing Air Traffic Service Providers, Airlines, Industry, Universities and R & D organisations to share experiences and lessons learned from integrating Human Factors in aviation projects. Participants heard about the experiences from applying the Human Factors Case in EUROCONTROL Programmes (FASTI and N-FPDS in UAC Maastricht), and also about the experience of DFS, NATS and Airbus from integrating human factors into their system design processes.