世界银行：参与中低收入国家的养老金计划（英文版）

Low- and middle-income countries are aging rapidly but stagnation of growth in participation in pension programs, due to widespread informal employment, presents a major fiscal challenge. Some claim that improving the design of pension program rules can encourage more pension contributions, while others push for universal non-contributory pensions. This paper reviews the recent academic literature on the determinants of active participation in pension systems in high- informality settings. An