Luxembourg extends the 3-year period to take into account periods of education, child
rearing, prior disability, and certain other periods during which contributions ordinarily
are not paid. Under the Agreement, these periods may have occurred in the United States.
Do not develop for periods of education, child rearing, prior disability, etc. when
obtaining the Form SSA-2490-BK (Application for Benefits under a U.S. International Social Security
Agreement). Luxembourg obtains this information on the application that it sends to the claimant
and requires the claimant to submit other evidence directly to the Luxembourg agency.
For more information on evidence required, see GN 01733.210.
Luxembourg requests assistance from the Division of International Operations (DIO)
if it subsequently needs to verify such periods.