If you will receive a payout of unused sick and annual leave when you retire, there may be tax advantages to rolling that payout into the deferred compensation plan. Talk with a qualified tax consultant to see if a rollover is right for you.
If it is and you don't yet have a deferred compensation account, you will need to set one up at least one month before you plan to retire and make at least one payroll contribution into your account. You can sign up online or print an enrollment form at http://www.sers.pa.gov/DeferredCompensationPlan-Enroll.html.
If you have questions, contact a deferred compensation at 1.800.633.5461.
Learn more about deferred compensation.