Railroad Retirement Board: How to Find Your Fax Number

RRB accepts fax for specified unemployment and sickness submissions. Retirement and Medicare proof documents have separate original or certified-copy requirements.

Sarah Mitchell

Published on

September 18, 2026

Last updated on

October 30, 2026

Retirement and Medicare evidence may require originals or custodian-certified public records; faxed copies do not satisfy those proof requirements.
RRB permits UI-1 unemployment applications by fax to the local office, and SI-1a sickness applications by fax to 713-405-2078.
The employer-side Form AA-12 fax remains (312) 751-7129; do not use it for other benefit submissions.

Who This Page Is For

RRB applicants checking a form-specific fax route, and employers submitting Form AA-12. Submission rules for unemployment, sickness and retirement proof are different.

Does the Railroad Retirement Board accept fax?

Yes, for specified submissions. The RRB FAQ permits unemployment and sickness fax submissions. This does not override the retirement and Medicare proof requirements for original documents or custodian-certified public records.

Where to fax, and where not to

Form AA-12, Notice of Death and Request for Service Needed for Eligibility (the deceased worker's employer, not the beneficiary): fax (312) 751-7129. Source: RRB's own official Form AA-12.
UI-1 unemployment application: RRB permits fax to the applicant’s local office. Use the official Field Office Locator linked from the RRB FAQ to confirm the destination.
SI-1a sickness application: fax 713-405-2078. SI-1b medical statements may accompany it or be submitted separately by mail or fax, following the RRB instructions.
Retirement and Medicare proof documents: follow RRB’s original or custodian-certified record requirements; faxed copies are not a substitute.

^{Fax status verified September 17, 2026.}

Which route should I use?

Identify the exact form and benefit type before selecting a destination.
Use the local office for an allowed UI-1 fax, and the sickness route above for SI-1a/SI-1b.
For retirement or Medicare proof, confirm the required original or certified record and its delivery route with RRB.
Employers submitting AA-12 should use that form’s dedicated fax, not a beneficiary submission number.

Several other retirement and benefits administrators in our directory follow a similar pattern. Our directory also covers CalSTRS' fax number, how to fax Empower Retirement, and the John Hancock fax page, each with its own scope and confirmed sources.

Use Fax.Plus only after confirming that RRB accepts fax for your specific form and destination. Keep the transmission report; it does not replace any original-document requirement.

FAQs

Can I fax my Railroad Retirement Board disability or retirement application?

Do not confuse an application route with proof-document requirements. RRB requires originals or custodian-certified public records for specified retirement and Medicare evidence; faxed copies do not satisfy those requirements. Separately, RRB permits specified unemployment and sickness submissions by fax. Confirm the route for your exact form with RRB. See the RRB FAQ and proof guidance.

Who actually uses RRB's Form AA-12 fax number?

The deceased worker's employer, not the beneficiary. Form AA-12 verifies service and eligibility after a survivor has already filed for benefits, it isn't a form a beneficiary submits themselves.

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