The Third-Party Function Report: What Your Family Should Say

Social Security sometimes asks someone who knows you well — a spouse, parent, adult child, roommate, or friend — to fill out a Function Report – Adult – Third Party (Form SSA-3380-BK) describing what they have personally seen you struggle with. It is not a formality. A disability examiner at the state agency, and later an administrative law judge (ALJ), will actually read it, and it can either reinforce your case or quietly undercut it. The difference almost always comes down to one thing: specific, honest, observed detail rather than vague sympathy or language that reads as coached.

Why this form matters

Your own function report (Form SSA-3373-BK) tells SSA what you say about your limits. The third-party version tells SSA what someone else has watched happen in ordinary life, over months. Under SSA's rule on evaluating symptoms, SSR 16-3p, adjudicators look at the whole record — the objective medical evidence, your statements, and statements from medical sources and other people who know you — and weigh how consistent it all is. A third-party report that lines up with your own account and with the treatment notes adds real weight. SSR 16-3p is explicit that SSA is not judging your character or truthfulness; it is comparing the evidence for consistency. So a report that contradicts what you told your doctor, or that reads as written to impress rather than to describe, simply carries less weight.

This is not only for people already before a judge. SSA and the state Disability Determination Services can request a third-party report at the initial application or reconsideration stage, and a thoughtful one in the file can help long before any hearing.

What makes a report persuasive

• Concrete, dated, specific detail. "He stopped mowing the lawn in March, and now it takes him two days with breaks" tells an adjudicator something. "He can't do yardwork anymore" does not. Specifics are easy to picture — that is why they carry weight.
• Ordinary, lived-in observation, not medical opinion. The person writing the report is not a doctor and should not try to sound like one. "She naps three hours every afternoon and still seems exhausted at dinner" is exactly the kind of observation the form asks for. Guessing at what is medically wrong is not their job.
• Frequency and change over time. How often does something happen, and how has it changed? "I do all the driving now — she stopped about a year ago after two near-misses" shows a trajectory, not just a snapshot.
• Good days and bad days, honestly. Most impairments fluctuate, and a report that describes every day as identical does not match how conditions usually work. A useful report says something like: "On a good day he can load the dishwasher and sit through dinner. On a bad day — which is most days — he stays in bed until early afternoon and doesn't want to talk to anyone." That range is credible because it is usually the truth.
• Consistency with your own report and the medical record. It helps if both people have separately described the same underlying facts — the same conditions, the same rough limitations — without copying each other's language. Matching facts help; matching wording does not.

What weakens a report

• Vagueness and generic sympathy. "She's really struggling and it's so sad" gives an adjudicator nothing to work with. It reads as filler rather than evidence.
• Language that looks coached. If the third-party report uses the same unusual phrases as your report, drops in Social Security terms of art like "sedentary work" or "marked limitation," or plainly was not written by the person signing it, it invites doubt about whether it reflects anything the writer actually observed.
• Contradicting your own statements. If you report that you cannot stand more than ten minutes, but your spouse writes that you stand at the stove cooking for an hour most nights, that gap gets noticed. It does not necessarily doom a claim, but the inconsistency has to be explained, and under SSR 16-3p unresolved inconsistencies reduce how much weight your statements about symptoms get.
• Overstating. Describing limits as worse than they really are is as damaging as understating them. When an overstatement collides with the medical records or with your own testimony, it can undermine an otherwise well-supported claim.

A note on former employers

A letter from a former supervisor or HR contact can be some of the most useful evidence in a file, because the employer is describing the work itself. Helpful detail includes: accommodations that were tried (a modified schedule, reduced duties, a stool at a workstation) and whether they worked; attendance problems tied to the condition (missed days, frequent lateness, early departures); and any unsuccessful work attempt — a job or return-to-work effort that ended, or had to be cut back, because the impairment made it unsustainable. SSA has specific rules for when short-lived work counts as an unsuccessful work attempt rather than substantial gainful activity, so an accurate account of what happened and how long it lasted matters. None of this needs legal language; a plain, factual account from someone who supervised the work is what carries weight.

What to do

1. Give the person real time and no script. Do not write the answers for them or tell them what to say. Ask them to describe, in their own words, what they have actually seen — specific incidents, specific seasons or dates, specific changes over time.
2. Encourage detail over adjectives. If a sentence could describe almost anyone ("he has trouble with pain"), it needs a concrete example instead ("he can't sit through a full meal without standing up twice").
3. Ask them to include the bad days — and the good ones. A report that shows only one extreme is incomplete and less believable, not more.
4. Return the form by SSA's deadline. SSA's request letter gives a response window and it is short — often only a couple of weeks. If more time is needed, call the number on the letter before the date passes, not after. A missed function report can lead to a decision made without it, or a denial for failure to cooperate.
5. Compare the facts, not the wording. Reading your report alongside theirs to make sure the underlying facts line up is fine; rewriting either one to match the other's phrasing is what looks coached.
6. Keep a copy of everything submitted, including any former-employer letter, for your own records and for your representative if you have one.

Never fabricate

SSA routinely compares your function report, any third-party reports, and the medical record against each other. Making up or inflating symptoms — for yourself or on someone else's behalf — is not a strategy; it is fraud, it is a federal crime, and it can sink a legitimate claim built on real, documented limitations. The honest version of your situation, described specifically and consistently across every piece of evidence, is also the strongest version.

Frequently asked questions

Does SSA always send a third-party function report?

No. SSA requests one at its discretion, often when it wants a fuller picture of daily functioning than the medical record alone provides. Not receiving one does not hurt your claim, and you generally cannot demand that SSA send one — though you or your representative can submit a written statement from someone who knows you, and at a hearing that person may be able to testify.

Can more than one person submit a third-party statement?

Yes. You or your representative can submit additional witness statements or letters — for example from a former employer, a caregiver, or a friend — as evidence, in addition to any form SSA specifically requested. Evidence for a hearing generally must be submitted or identified at least five business days before the hearing date, so do not sit on it.

What if my family member's answers don't perfectly match mine?

Minor differences are normal. People notice different things, and symptoms genuinely vary from day to day. The concern is a real contradiction on a core fact — how far you can walk, whether you drive, how often you leave the house — not a difference in emphasis or wording.

Should the third party mention specific SSA rules or use legal terms?

No. The most useful reports are written in plain, ordinary language describing what the person has seen. Legal or medical jargon in a lay witness's own words tends to look borrowed rather than observed.

What's the deadline for returning the form?

SSA's request letter states the response window, and it is usually a matter of weeks. Return it by that date, and call the SSA or Disability Determination Services contact listed on the letter right away if more time is needed rather than letting the deadline pass.

This is general information, not legal or medical advice, and it does not create an attorney-client relationship. If you want help with your claim, you can appoint a representative — an attorney or an eligible non-attorney recognized by SSA. Under an SSA fee agreement, a representative is generally paid only out of past-due benefits, only if the claim is approved, and only in an amount SSA authorizes: the lesser of 25 percent of past-due benefits or $9,200. Be cautious of anyone who demands money upfront or "guarantees" approval. Legal aid offices and your state's protection and advocacy agency may also be able to help at no cost.

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