Over 30 years of retirement, Derrick would collect as much as $931,191, according to a projection by Local Government Information Services (LGIS), which publishes Chicago City Wire.
The projection assumes Derrick received $19,572 in the first year of retirement, then 3 percent annual increases thereafter, compounded.
After 3 years of retirement, Derrick will have already received $60,495 in retirement benefits, or more than the sum total of the retiree's contributions to the state pension fund.