The Irish coverage certification is used to assign foreign (F) quarters of coverage
to the fully certified earnings record (FCER).
All periods of coverage certified by Ireland are creditable unless a remark on the
form IRL/USA 4 brings the creditability into question.
The presence of Irish coverage after disability onset is not necessarily an indication
of work. Development of substantial gainful activity (SGA) should not be initiated
based only on the presence of such Irish coverage.
There is no minimum amount of Irish coverage which must be earned before the U.S.
can use it.