A signed fee petition itemizing services constitutes an allegation that the representative
provided the services listed. The petition's value, as proof that the services were
provided, is strengthened when the claimant does not question or disagree with the
The representative is ultimately responsible for substantiating alleged services.
However, evidence in SSA's records (e.g., the claim file or the MCS development worksheets)
is reliable documentation that services were provided. Field office (FO) and processing
center (PC) employees document the file or the system to reflect that the representative
has submitted materials or contacted SSA about a substantive matter (as GN 03910.040H through GN 03910.040J and GN 03910.050B require).