The SEP duration begins the day the individual contacts SSA about being misinformed
and ends on the last day of the month six months later.
Example: An individual discovers they received erroneous information from their GHP. They
contact SSA with supporting documentation on May 16, 2023, then the individual’s SEP
begins on May 16, 2023 and ends on November 30, 2023. The individual has until November
30, 2023 to enroll under the GHP or Employer Misrepresentation SEP.