This policy paper: (i) provides a global overview of the organization of pension systems, their coverage and benefits, as well as public expenditures on social security, in 178 countries; (ii) analyses trends and recent policies, e.g. extension of coverage in a large number of low- and middle-income countries; (iii) presents the negative impacts of fiscal consolidation and adjustment measures in a number of higher-income economies; and (iv) calls for the expansion of social protection in pursuit of crisis recovery, inclusive development and social justice.