Source: Jack VanDerhei, EBRI Issue Brief, June 13, 2019
From the summary:
In recent years there have been a number of policy proposals that call into question the value of existing defined contribution plans. However, the suggested alternatives do not provide a detailed analysis of the impact of terminating defined contribution plans on retirement income adequacy for American households. Previous research by the Employee Benefit Research Institute (EBRI) has provided some tangential evidence with respect to the potential impact. In 2014 EBRI provided simulation analysis of the serious error introduced by models that ignored future contribution activity from defined contribution plans. In 2017 EBRI produced simulation results showing that, if there were no employer-sponsored retirement plans (defined benefit as well as defined contribution) and individuals were assumed to behave in the manner observed for those with no access to such plans, the aggregate retirement deficits would jump from $4.13 trillion to $7.05 trillion (an increase of 71 percent).