Understanding Step 4: Past Relevant Work Analysis

The Five-Step Sequential Evaluation

The Social Security Administration (SSA) uses a five-step sequential evaluation process to determine if an individual is disabled. Step 4 is a critical juncture where the SSA assesses your ability to perform your "past relevant work" (PRW).

The Five Steps at a Glance:

Step 1: Are you working at substantial gainful activity (SGA)?
Step 2: Do you have a severe impairment?
Step 3: Does your impairment meet or equal a listing?
Step 4: Can you do your past relevant work?
Step 5: Can you do any other work that exists in the economy?

What is Past Relevant Work (PRW)?

Past relevant work is any job you've performed in the last 15 years that:

Was considered "substantial gainful activity" (you earned over a certain amount)
You performed long enough to learn the job duties
Lasted long enough to be considered significant work experience

How Step 4 Works

1. Assessing Your Residual Functional Capacity (RFC)

The SSA determines your RFC—a detailed assessment of what you can still do despite your medical conditions. This includes:

Physical abilities (lifting, standing, walking, sitting)
Mental abilities (concentration, memory, social interaction)
Environmental limitations (sensitivity to dust, noise, temperature)

2. Comparing RFC to Your Past Work

The core of Step 4 is comparing your RFC with the demands of your past relevant work. The SSA will consider:

How you actually performed the job: The specific way you did your work, including any accommodations or modifications.

How the job is generally performed: How the job is typically done in the national economy according to the DOT.

3. The Decision

If you CANNOT do your past work: Your case proceeds to Step 5, where the SSA considers whether you can do any other work in the national economy.

If you CAN do your past work: Your claim is denied at Step 4.

Why Detailed Work History Matters

Your work history documentation is the foundation upon which the SSA evaluates your claim. Accurate, detailed information is critical because:

It paints a complete picture of your job's actual demands
For composite jobs, it shows the full scope of combined requirements
It helps vocational experts properly classify your past work
Consistency with medical records strengthens credibility

Common Mistake to Avoid

Simply listing a job title like "delivery driver" doesn't capture whether you also spent half your day lifting heavy packages in a warehouse. Failing to document the full scope of your duties can lead to an incomplete evaluation.

Disclaimer: This article is for informational purposes only and does not constitute legal advice. Every disability case is unique. Please consult with a qualified disability attorney or accredited representative for advice about your specific situation.