On welfare effects of increasing retirement age

We develop an OLG model with realistic assumptions about longevity to analyze the welfare effects of raising the retirement age. We look at a scenario where an economy has a pay-as-you-go defined benefit scheme and compare it to a scenario with defined contribution schemes (funded or notional). We show that, initially, in both types of pension system schemes the majority of welfare effects comes from adjustments in taxes and/or prices. After the transition period, welfare effects are predominantly generated by the preference for smoothing inherent in many widely used models. We also show that although incentives differ between defined benefit and defined contribution systems, the welfare effects are of comparable magnitude under both schemes. We provide an explanation for this counter-intuitive result.     

现收现付制对储蓄、教育和经济增长的影响——基于家庭养老视角的理论分析

在中国人口老龄化程度不断加深,面临的养老保障压力越来越大的情况下,现收现付制养老保障体系能否促进经济的长期增长也备受争议。在家庭养老背景下,引入家庭养儿防老机制和父母对子女的部分利他假定,去分析现收现付制养老保障体系对储蓄、教育和经济增长的影响十分必要。虽然现收现付制降低了储蓄,但对教育和经济增长的影响是不确定的,具体取决于父母对子女的质量的偏好,以及人力资本投资的产出弹性系数、劳动收入和资本收入的份额以及老龄化程度。