The Postal Service issued a mandatory stand up talk dated July 1 about the Office Personnel Management (OPM) requiring federal agencies to verify eligible family members who are enrolled in the Federal Employees Health Benefits Program, also known as FEHB. The stand up talk and related attachment (PostalEASE FEHB Worksheet) is available here.
USPS has confirmed that only employees with self plus one and self and family enrollments that need to update eligible family members are required to fill out and return PostalEASE FEHB Worksheet (USPS-24).
Eligible family members include your current spouse; your children under age 26, including adopted children, stepchildren and foster children under certain circumstances; and adult children incapable of self-support because of a mental or physical disability that existed before age 26.
If you have any questions, please contact the branch office. :)