David Laibson Department Chair, Robert I. Goldman Professor of Economics Harvard University Publications Optimal Illiquidity December 2020 Recognizing households’ needs for flexibility, while discouraging overconsumption, how much liquidity should be built into a socially optimal savings system? Share Potential vs. Realized Savings Under Automatic Enrollment July 2018 Automatic enrollment helps boost retirement plan contributions, but its ultimate impact on plan balances is unclear. Share Potential vs. Realized Savings Under Automatic Enrollment July 2018 Automatic enrollment helps boost retirement plan contributions, but its ultimate impact on plan balances is unclear. Share View more