Pensions represent a cornerstone of income security in the Nordic welfare state. This chapter analyses the major Finnish pension reforms of 2005, 2017, and the reform negotiated in 2025, and shows how these pension reforms have increasingly incorporated elements of the social investment paradigm. The 2005 and 2017 reforms introduced flexible retirement ages, life expectancy adjustments, and accrual incentives designed to extend working lives, thereby embedding investment-oriented incentives into the system. However, interventionist features remain limited, with only selective measures such as the years-of-service pension for physically demanding occupations. The 2025 reform shifts the focus towards fiscal stabilisation, introducing technical mechanisms rather than behavioural incentives. Overall, Finnish pensions illustrate how an earnings-related, corporatist system can integrate elements of social investment without fundamentally departing from its role as long-term income security.