You are vested in KCPSRS when you acquire 5 years of creditable service. Once vested, you will have a right to a monthly retirement benefit when you reach the age and/or service requirements. Vesting may also help you qualify for disability benefits or benefits for your beneficiary.
Creditable service refers primarily to the length of time you have worked as a regular employee while making contributions to KCPSRS via payroll deduction. Your total creditable service is one factor used in the formula to calculate the amount of your retirement benefit. In other words, the more creditable service you have, the higher your monthly benefit amount.