Over 30 years of retirement, Robertson would collect as much as $75,256, according to a projection by Local Government Information Services (LGIS), which publishes Chicago City Wire.
The projection assumes Robertson received $1,581 in the first year of retirement, then 3 percent annual increases thereafter, compounded.
After 4 years of retirement, Robertson will have already received $6,613 in retirement benefits, or more than the sum total of the retiree's contributions to the state pension fund.