Working After Retirement: Monthly Benefit Amount
Will working as a substitute teacher after retirement lower your monthly CalSTRS benefit amount?
Returning to work in a CalSTRS-covered position during the first 180 calendar days following your most recent retirement date will reduce your gross monthly benefit dollar-for-dollar by the amount you earn during that time.
This is known as the separation-from-service requirement.
Additionally, if you return to work and earn more than the annual earnings limit (which is set annually and is $43,755 for the 2017–18 fiscal year), you will see a reduction to your retirement benefit.