The BackDROP period is the length of time between your BackDROP date and your actual retirement date. You may select a BackDROP period (in one year increments) ranging from one year to the total amount of time worked after normal retirement eligibility (maximum of five years).

Examples of BackDROP Periods
Assume you work 3 years and 8 months beyond normal retirement eligibility. You may elect a BackDROP period of 1 year, 2 years, 3 years, or the maximum of 3 years and 8 months.

Assume you work 6 years beyond normal retirement eligibility. You may elect a BackDROP period of 1 year, 2 years, 3 years, 4 years, or the maximum of 5 years