If your SSDI claim has been denied and you've requested a hearing before an Administrative Law Judge (ALJ), there's a good chance someone else will be in that room — or on that call — whose testimony could shape the outcome of your case. That person is a vocational expert (VE), and understanding their role is one of the most important things you can do before your hearing.
A vocational expert is an independent specialist — typically someone with a background in occupational counseling, labor market analysis, or rehabilitation — whom the Social Security Administration (SSA) calls to testify at ALJ hearings. They are not there to advocate for you or against you. Their job is to answer the judge's questions about work.
Specifically, the VE is asked to help the ALJ determine whether your medical limitations prevent you from doing your past relevant work or any other work that exists in significant numbers in the national economy. That second part — other work — is where vocational expert testimony often becomes the deciding factor.
In Pennsylvania, as in every other state, SSDI hearings are conducted through SSA's Office of Hearings Operations. Most claimants reach this stage after being denied at the initial application level and again at reconsideration. The ALJ hearing is the third step in the appeals process, and statistically it's the stage where claimants have the best chance of being approved.
At this level, the SSA is required to take a closer look — and part of that process often involves calling a VE to provide expert labor market testimony.
The ALJ will pose hypothetical questions to the vocational expert. These hypotheticals describe a person with a specific set of limitations — based on your Residual Functional Capacity (RFC) — and ask whether that person could perform your past work or any other jobs.
For example, an ALJ might ask: "Assume a person of the claimant's age, education, and work history who can perform light work but cannot climb ladders, must avoid concentrated exposure to hazards, and is limited to simple, routine tasks. Are there jobs this person could perform?"
The VE will typically respond with specific job titles and DOT (Dictionary of Occupational Titles) codes, along with estimates of how many of those positions exist nationally.
⚖️ This testimony directly shapes whether the ALJ finds you disabled under SSA's five-step sequential evaluation.
| Step | Question | VE Involved? |
|---|---|---|
| 1 | Are you working above SGA? | No |
| 2 | Is your condition severe? | No |
| 3 | Does your condition meet a listed impairment? | No |
| 4 | Can you do your past relevant work? | Often yes |
| 5 | Can you do any other work? | Almost always yes |
The VE's testimony is most critical at Steps 4 and 5. If the ALJ finds you can't return to your past work, the burden shifts to SSA to show other jobs exist — and the VE provides that evidence.
The VE's testimony isn't independent of your personal profile. Their answers are tied directly to the hypothetical the ALJ builds around your situation. Several variables influence how that plays out:
Yes — and this is a part of the hearing that catches many unrepresented claimants off guard. You or your representative have the right to cross-examine the vocational expert. This can include:
🔍 Courts — including federal district courts in Pennsylvania — have overturned ALJ decisions when vocational expert testimony contained unresolved conflicts with the Dictionary of Occupational Titles that the judge failed to address.
One phrase you'll hear repeatedly is whether jobs exist "in significant numbers in the national economy." SSA does not require that millions of those jobs exist — only that a meaningful number do. The VE provides estimates, and ALJs have discretion in how they weigh them. What counts as "significant" has been contested in courts, including within the Third Circuit, which covers Pennsylvania federal courts.
How a vocational expert's testimony affects your hearing depends entirely on your RFC, your work history, your age, your medical documentation, and how your specific limitations are characterized going into that room. Two claimants with the same diagnosis can walk away with completely different outcomes based on those details — and on whether the VE's testimony goes unchallenged. That gap between understanding the process and applying it to your own file is exactly what makes the hearing stage so consequential.