This paper analyzes the interconnections of underreported earnings, savings and oldage pension with the help of a most simple, elementary model. The workers can be divided into three groups: 1) well-paid who report their full earnings, 2) well-paid who report only the minimum earnings (evaders)...

When and how to subsidize tax-favored pension accounts? To defend myopic workers against themselves, the government introduces a mandatory system but to help savers, it adds taxfavored retirement accounts. If the mandatory system is progressive, then a proportional voluntary system can...