The RRB obtains this form to protect a Social Security filing date. Upon receipt of Form RR-8 (Notice of Protection of Filing Date for Social Security Benefits), contact the claimant to file for SSA benefits. If the claimant already filed an application, process the RR-8 as a duplicate application, unless you can establish an earlier material filing date using the RR-8.

If the claimant does not respond to the request to file an application, or indicates that they do not wish to file, process the RR-8 as an application disallowance, using disallowance code 64.

For additional information regarding applications filed with the RRB, see RS 01601.230.