Excluding fireman, cops, and military (there are life expectancy issues in these occupations which may require subsidized retirement): why does any public employee receive a pension? The private sector has been systematically eliminating pensions for decades.
"CalPERS of course has to figure out actuarily how long their employees are expected to live in order to calculate retirement formulas and how much and for how long they will have to pay to retirees. Their findings pretty much debunk this myth once and for all as they find absolutely no difference in the life expectancy of miscellaneous members versus public safety officials."