Are all school district/municipal employees contributing to the pension fund to keep it well funded? 

Employees contribute according to their pension system tier and therefore are only obligated to pay for a certain period of time and at a certain contribution level (see yesterday’s question).  This means, in some cases, more senior employees no longer contribute while newer employees are contributing.

Currently, only Tiers V and VI require contribution for the entire course of a public employee’s career.  That is why many states likes Michigan and Georgia have gone to a defined contribution plan that is not guaranteed by taxpayers but instead is controlled by the employee and an investment advisor.