Design considerations for large public sector defined contribution plans3

Abstract The paper identifies differences between private (401 (k)) plans, which have evolved under ERISA and existing public plans, which have not. Examination of model legislation reveals that public plans should largely conform to ERISA going forward and reflect best practices in the private sector. Empirical analysis of equity mutual funds with $1.8 trillion in assets and institutional equity accounts with $98 billion in assets demonstrates efficiencies in separately procured institutional investment, administrative and educational services relative to retail investment products. The analysis points to tension between the duties of trustees and the demands of participants requesting large numbers of retail investment options.