The Basic Requirements for SSDI

To receive Social Security Disability Insurance (SSDI), you must have a medical condition that prevents you from working, you must have worked long enough to build up credits in the Social Security system, and you must be under the full retirement age. The Social Security Administration does not use the word "may have access to" — they use "insured status," which means you have paid enough into Social Security through payroll taxes to have a claim on the system.

The medical part is only one piece. You could have a severe condition and still not receive SSDI if you have not worked enough years. Conversely, you could have worked your whole life and still be denied if your condition does not meet Social Security's definition of disability.

Key Takeaways

  • You must have a medical condition expected to last at least 12 months or result in death, and it must prevent you from doing substantial work.
  • You need enough work credits — typically 40 credits total, with at least 20 earned in the 10 years before you became disabled.
  • Social Security's definition of disability is stricter than most other programs: your condition must prevent you from doing any substantial work, not just your current job.
  • Your age, savings, and income do not affect whether you can receive SSDI, but they may affect how much you receive.
  • You can work part-time and still receive SSDI as long as your earnings stay below a monthly limit, which changes each year.

What Social Security Means by "Disability"

Social Security has a specific definition: your condition must prevent you from doing any substantial work, not just the job you had before. This is much stricter than what other programs use. Workers' compensation might pay you for a back injury that keeps you out of construction but lets you do office work. SSDI would not, because you can still work.

Your condition must be expected to last at least 12 months or result in death. A broken leg that heals in eight weeks does not count. A condition that might improve but is expected to be disabling for a year or more does count.

Social Security maintains a list called the Blue Book that describes conditions they recognize as disabling. It includes things like cancer, heart disease, arthritis, mental illness, and neurological conditions. But having a condition on the list does not automatically mean you receive benefits — Social Security still has to determine that your specific case meets their severity standard.

Work Credits and How Long You Need to Have Worked

Social Security measures your work history in credits, not years. You earn one credit for every $1,730 of wages you report (this dollar amount changes each year). You can earn a maximum of four credits per year. Most people need 40 credits total to receive SSDI, which typically means about 10 years of work.

But there is a second requirement: you must have earned at least 20 of those 40 credits in the 10 years before you became disabled. If you worked steadily for 15 years and then stopped, you might have 60 credits total but only 8 in the past 10 years — you would not meet the requirement.

If you became disabled before age 24, the rules are different and more lenient. You may need only six credits earned in the three years before you became disabled. If you are between 24 and 31, you need credits for half the time between age 21 and the time you became disabled.

Age and Other Factors That Do Not Matter

Your age does not disqualify you from SSDI, but you must be under full retirement age when you explore. (Full retirement age is 66 or 67 depending on your birth year.) If you are already receiving retirement benefits, you cannot also receive disability benefits — Social Security switches you to retirement at your full retirement age.

Your savings, assets, and income from other sources do not affect whether you receive SSDI. Unlike Supplemental Security Income (SSI), which is a needs-based program, SSDI is based on your work history. You could have a million dollars in the bank and still receive SSDI if you meet the medical and work-credit requirements.

Your immigration status does not disqualify you if you have a valid Social Security number and work history. Undocumented immigrants cannot receive SSDI, but people with work permits, green cards, and other legal statuses can.

How Much You Can Earn While Receiving SSDI

You can work part-time and still receive SSDI, but only if your monthly earnings stay below a limit called Substantial Gainful Activity (SGA). In 2024, that limit is $1,550 per month for non-blind adults. If you earn more than that in a month, Social Security may determine that you are able to do substantial work and stop your benefits.

There is also a trial work period that lasts nine months. During this time, you can earn any amount and still receive your full SSDI payment. After the trial work period ends, you enter an extended may be able to access period where you can still receive benefits in months when you earn below the SGA limit.

The SGA limit changes each year. Social Security publishes the new amount in October or November for the following year, so check their website or ask your representative if you are working.

Medical Evidence You Will Need to Provide

Social Security will ask for medical records from your doctors, hospitals, and mental health providers. They need to see test results, imaging, treatment notes, and your doctor's assessment of how your condition limits your ability to work. If you have not seen a doctor recently, Social Security may send you to one of their own doctors for an examination.

You do not need to have a diagnosis to receive SSDI — what matters is the severity of your symptoms and how they affect your ability to work. But you do need medical evidence. If you have not been treated for your condition, Social Security will likely deny your claim.

If you are working with a disability lawyer, they will help you gather these records and organize them in a way that makes your case clear to Social Security.

Frequently Asked Questions

Can I receive SSDI if I have never worked?

No. SSDI requires work credits earned through payroll taxes. If you have never worked, you may be able to receive Supplemental Security Income (SSI) instead, which is a needs-based program for people with disabilities who have little income or assets. The medical requirements are the same, but SSI does not require a work history.

What if I worked but it was a long time ago?

You need at least 20 credits earned in the 10 years before you became disabled. If you worked 15 years ago but have not worked since, you likely do not meet the requirement. However, if you have worked recently — even part-time — you may have enough credits. Check your Social Security statement to see how many credits you have.

Can I receive SSDI for depression or anxiety?

Yes, if your condition is severe enough. Social Security recognizes mental health conditions as disabling, but they must prevent you from doing any substantial work. You will need medical records showing ongoing treatment, your symptoms, and how they limit your ability to work. Many people with depression or anxiety do not meet Social Security's severity standard.

What happens to my SSDI if I go back to work full-time?

If you earn more than the SGA limit for nine consecutive months, Social Security will stop your benefits. However, you can request a new review if your condition worsens and you have to stop working again. You do not lose your work credits or your right to reapply.

Do I have to be unable to work at all to receive SSDI?

No. You can work part-time and earn below the SGA limit. The key is that you cannot do substantial work — meaning work that earns you more than the monthly limit and uses your full capacity. Many people on SSDI work a few hours a week or do light-duty jobs.