Quick answer
What is SSA-671 used for?
This form documents employment, self-employment, covered earnings, or work activity. SSA uses concrete duties, hours, pay, expenses, accommodations, and work changes rather than job title alone.
A report or questionnaire develops facts rather than making the final decision. Answer for the requested time period, use examples and source records, and explain why an item cannot be answered.
For SSA-671, the transaction named by the government is “Railroad Employment Questionnaire.” Use that title to distinguish this PDF from forms that collect related facts but produce a different agency action.
What to prepare before filling SSA-671
- 01
Confirm that SSA-671 — Railroad Employment Questionnaire — matches the action described in your SSA, CMS, or IRS notice. Similar form numbers may serve different programs or review stages.
- 02
Collect pay stubs, W-2 or tax records, employer contacts, start and stop dates, hours, duties, subsidies, impairment-related expenses, and business records when self-employed.
- 03
Download a fresh copy of SSA-671 from the official link below. SSA warns that browser PDF viewers may not fill forms consistently, so save the PDF and use current Adobe Reader when needed.
- 04
Write names, Social Security or claim numbers, dates, addresses, and amounts exactly as they appear in the records you are using. Mark nonapplicable items as the instructions direct instead of inventing an answer.
- 05
Review SSA-671 for signatures, dates, attachments, continuation pages, and any case-specific return instructions. Keep a complete copy and delivery record.
Questions specific to “Railroad Employment Questionnaire”
Use these prompts to test whether your records actually support the subjects named in the official SSA-671 title.
- What definition or instruction controls “railroad” in this filing, and have you avoided substituting the everyday meaning for the program-specific question?
- If an agency reviewer asks about “employment,” can you trace the SSA-671 entry to a named person, document, account, notice, or event?
- For the “questionnaire” part of SSA-671, which dated record supports the answer, and does that record cover the full period requested by the PDF?
- Is “identity” a current fact, a historical fact, or an estimate here, and have you labeled that distinction wherever SSA-671 allows?
- If an agency reviewer asks about “effective date,” can you trace the SSA-671 entry to a named person, document, account, notice, or event?
- If an agency reviewer asks about “supporting evidence,” can you trace the SSA-671 entry to a named person, document, account, notice, or event?
Evidence review
Collect pay stubs, W-2 or tax records, employer contacts, start and stop dates, hours, duties, subsidies, impairment-related expenses, and business records when self-employed.
Before you sign
Reconcile gross pay, dates, hours, and employer names with payroll and tax records. Explain unsuccessful work attempts, reduced duties, special conditions, or farming and family-business arrangements instead of leaving an apparent conflict.
A reliable way to complete SSA-671
Map the source records
Define the reporting period before collecting numbers or events. Write its start and end dates at the top of your worksheet, and exclude facts outside that window unless the form asks for background. For recurring amounts, preserve both the pay or transaction date and the period covered; those dates can answer different questions in benefit administration.
Review fields and branches
Keep factual answers and advocacy separate. Enter the requested fact in the field, then use the designated explanation area to supply context. Do not replace a date, amount, duty, limitation, or relationship with a conclusion. Clear facts make it easier for the agency to understand the request and decide whether more evidence is needed.
Package and track the filing
Protect original evidence. Submit originals only when the official instructions require them, and first retain a legible copy and inventory. For certified records, confirm what the agency accepts. Do not staple, crop, redact, or alter a document in a way that removes seals, page relationships, explanatory notes, or identifying context.
Official SSA-671 PDF and resources
These government links were verified in the SSA forms directory on 2026-08-09. Download a fresh PDF before filing because agencies can revise forms and instructions.
Clerks AI PDF skill
Prepare SSA-671 from your records
Add the blank government PDF and your source documents. Clerks AI can map supported facts to fields and flag gaps for review. You remain responsible for eligibility, signatures, accuracy, evidence, and submission.
Get the AI PDF filling skillSSA-671 FAQ
Is SSA-671 free to download?
Yes. SSA says all forms in its official directory are free. Use the government PDF link on this page; do not pay a third party merely for the blank form.
Can I fill SSA-671 in a web browser?
Possibly, but SSA says browser PDF viewers do not work consistently for filling or screen reading. Download the file and use current Adobe Reader if fields, saving, or accessibility features do not work correctly.
Where do I submit SSA-671?
Follow the address, office, upload route, or case-specific instruction in the PDF and any notice you received. The SSA directory says paper forms may generally be mailed or faxed unless the form states otherwise, but not every form uses the same destination.
Related work & earnings forms
Primary sources: SSA Forms and the official SSA-671 PDF. Independent guide by Clerks AI; not affiliated with SSA, CMS, or the IRS and not legal or benefits advice.
Last researched 2026-08-09. Recheck the official form and instructions before submission.