How Can Urban Workers'Pension Insurance Be Expanded to Flexi-Employed Persons?——Based on the Perspective of Sustainability and Equity of the Pension System and Equity of the Pension System
The OLG model and the actuarial model of pension insurance are constructed to ex-amine the sustainability of the pension insurance fund for urban workers and the level of pension benefits for flexi-employed persons under different expansion programs.In the short term,the faster the pension system covers flexi-employed persons,the more sustainable the pension fund will be;Further lowering the lower limit of the contribution base would create an incentive for flexi-employed persons to contribute without worsening the sustainability of the pension fund,however,in the long run,it will reduce the level of pension benefits for flexi-employed persons.Therefore,the lower limit of the contribution base can be dynamically adjusted according to the speed of expansion of the pension insurance fund for urban workers,and priority can be given to promoting the participation of young flexi-employed persons who have reached the standard of contribution ability.
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