You need a medical condition that stops you from working, plus a work history that shows you paid into Social Security

Social Security Disability Insurance (SSDI) has two hard requirements: you must have a condition severe enough that you cannot do substantial work, and you must have worked long enough and recently enough to have built up credits in the Social Security system. The Social Security Administration does not decide based on how much money you have, where you live, or how much you need help. It is purely about your medical condition and your work record.

The medical part is strict. Your condition must be expected to last at least 12 months or result in death. It is not enough to be unable to do your old job — you must be unable to do any job that exists in the economy, given your age, education, and work experience. The work history part is equally specific: you need a certain number of work credits, and most of those credits must be recent.

Key Takeaways

  • You must have a medical condition expected to last 12 months or longer that prevents you from doing any substantial work.
  • You need 40 work credits total, with at least 20 of them earned in the 10 years before you become disabled.
  • You earn one work credit for every $1,550 of wages you report (the dollar amount changes each year), up to four credits per year.
  • Your condition must be documented by medical records, test results, or ongoing treatment — not just your own report of pain or limitation.
  • If you are under 22 and your parent receives SSDI or retirement benefits, you may be able to receive benefits on their record without meeting the work requirement yourself.

The Medical Condition Must Meet Social Security's Definition of Disability

Social Security has a specific list of conditions that automatically meet the disability standard if your medical records show you have them at the severity level described. These include advanced cancer, HIV/AIDS, amyotrophic lateral sclerosis (ALS), and several others. If your condition is on the list and your records match the criteria, the process moves faster.

If your condition is not on the list, Social Security will evaluate whether it prevents you from doing any work. This is where the evaluation becomes detailed. They look at your symptoms, how often they occur, how long they last, and what medical evidence supports them. Pain alone is not enough — you need objective findings from a doctor, imaging, lab work, or other clinical signs that show the condition exists and is as severe as you describe.

Your condition must also be expected to last at least 12 months. If you have a broken leg that will heal in eight weeks, you do not meet the definition. If you have a condition that comes and goes but is expected to return and prevent work for a total of 12 months or more, that can count.

You Must Have Enough Work Credits From Recent Employment

Work credits are how Social Security measures whether you have paid into the system long enough. You earn one credit for every $1,550 of wages you report to Social Security (this dollar amount increases each year). You can earn up to four credits per year, which means you need at least $6,200 in annual wages to earn the maximum four credits.

The total number of credits you need is 40, but there is a recency requirement: at least 20 of those 40 credits must have been earned in the 10 years immediately before you become disabled. This means if you worked steadily for 10 years and then stopped, you would have enough credits. If you worked for 20 years and then had a 15-year gap before becoming disabled, you would not have enough recent credits, even though you have 40 total.

There is one exception: if you become disabled before age 24, you only need six credits, and they all must be from the three-year period before you become disabled. If you become disabled between ages 24 and 31, you need credits equal to the number of years from age 21 to the year you became disabled, with half of those earned in the recent period.

How Social Security Verifies Your Work History

You do not need to bring pay stubs or tax returns to prove your work history. Social Security has your earnings record on file from the W-2 forms your employers submitted. When you apply, they pull your record and count the credits automatically. If you worked under the table or for cash, that work does not count toward credits unless you reported it on your tax return.

You can check your own work record before you apply by creating an account on ssa.gov and viewing your earnings statement. If there are errors — missing years, wrong amounts, or employers you did not work for — you can request a correction. Corrections take time, so if you spot an error, report it as soon as you notice it, not when you apply for benefits.

Self-employment income counts toward credits if you reported it on your tax return. If you owned a business and paid self-employment tax, those earnings build credits just like W-2 wages do.

Medical Evidence Must Come From Your Treatment Records

Social Security will not take your word that you are disabled. They need medical records from doctors, hospitals, clinics, or other providers who have examined you or treated you. The records must show objective findings — things a doctor can measure or observe — not just your description of your symptoms.

Objective findings include imaging results (X-rays, MRIs, CT scans), lab work (blood tests, urinalysis), physical exam findings (limited range of motion, muscle weakness, abnormal reflexes), or test results (pulmonary function tests, cardiac stress tests). If you have been in treatment for your condition, those records are your strongest evidence. If you have not seen a doctor regularly, Social Security may ask you to see one for evaluation before they make a decision.

You do not need to hire a lawyer or doctor to gather your records. You can request them yourself from each provider and submit them with your application. Social Security can also request them directly from your providers if you give permission.

Age, Education, and Work Experience Affect the Decision

Even if your medical condition is severe, Social Security considers your age, education level, and what kind of work you have done. A 55-year-old with a high school education who has done manual labor all their life may be found disabled with a condition that would not disable a 35-year-old college graduate who has done office work.

This is called the medical-vocational allowance. Social Security has guidelines that say certain combinations of age, education, work history, and medical condition automatically mean you cannot do other work. If you are 55 or older, have limited education, and have done only unskilled physical labor, you have a better chance of being found disabled than someone younger with more education and a broader work history.

If you are under 50, Social Security will look harder at whether you could do a different job, even if you cannot do your old one. They may say you could do sedentary work, or work that does not require standing for long periods, or work that does not require reading or writing.

Conditions That Do Not Automatically Disqualify You

You can receive SSDI even if you have some income. If you work part-time and earn less than $1,550 per month (the 2024 limit; this changes yearly), you can still receive your full benefit. This is called substantial gainful activity — if you earn more than this amount, Social Security may say you are working and not disabled.

You can also receive SSDI if you are receiving workers' compensation or other disability benefits. Social Security will coordinate the payments, but you are not automatically disqualified. You can receive SSDI even if you have savings or own a home — there is no asset or resource limit for SSDI, unlike Supplemental Security Income (SSI).

Having a criminal record, being undocumented, or owing child support does not automatically disqualify you from SSDI. Social Security focuses on your medical condition and work history, not your legal status or history.

Frequently Asked Questions

What if I have not worked in five years but I have 40 credits?

You do not have enough recent credits. You need at least 20 credits earned in the 10 years before you become disabled. If you have not worked in five years, your credits from before that do not count toward the recency requirement. You would need to work again and earn new credits to meet the requirement.

Can I get SSDI for depression or anxiety alone?

Depression and anxiety can lead to SSDI, but Social Security needs medical records showing ongoing treatment, how severe it is, and how it limits your ability to work. A single diagnosis is not enough — you need documentation of symptoms, treatment attempts, and functional limitations from a mental health provider.

Do I need a lawyer to apply for SSDI?

No. You can apply on your own at ssa.gov or at your local Social Security office. Many people are approved without a lawyer. A lawyer can help if your claim is denied and you need to appeal, and they only get paid if you win.

What happens if I become disabled after age 62?

You can still apply for SSDI if you meet the medical and work history requirements. However, you may want to check whether retirement benefits would be higher. At 62 or older, you might receive more money from early retirement than from disability, so Social Security will help you understand both options.

Can I receive SSDI if I am still working part-time?

Yes, if you earn less than $1,550 per month (2024 limit). You can work part-time and still receive your full SSDI benefit. If you earn more than that amount, Social Security may determine you are doing substantial work and not disabled.