This handbook helps sustainability professionals navigate the updated reporting requirements of the United Nations Global Compact (UNGC) – the world’s largest corporate sustainability initiative, with over 25,000 participants across 160+ countries. In response to recent changes to the Communication on Progress (CoP) process, it offers clarity, structure, and practical advice to simplify your next submission. Whether you're already a UNGC member or preparing to join, this guide supports alignment with global principles.