This year's update of the Golden Age Index shows that the OECD has continued its gradual progress towards greater engagement of older people in the workforce. Iceland, New Zealand, Israel, Estonia and Sweden continue to lead the OECD, taking top positions on the index. We explore the potential boost to OECD GDP from raising employment rates of older workers to New Zealand levels, finding that the OECD could experience a long-term gain of around $3.5 trillion and the UK around £180 billion. View the key findings for highlights from our research and explore the results further using our interactive data tool. We provide more detailed analysis and commentary in the full report, which you can download below.