The work history requirement for SSDI

To receive SSDI, you need to have worked and paid Social Security taxes for a certain amount of time. The exact amount depends on your age when you become disabled. The younger you are, the less work history you typically need. Most people need between 5 and 10 years of work in the last 15 years, but this varies significantly based on when your disability began.

Social Security measures work history in credits, not years. You earn one credit for every $1,550 of wages you make in a year (this dollar amount changes each year). You can earn a maximum of four credits per year, regardless of how much you earn. So the fastest you can build work credits is four per year.

The program does not count all your work equally. Only work where you paid Social Security taxes counts toward SSDI. Self-employment income counts if you paid self-employment tax. Work done "under the table" or in jobs where your employer did not withhold Social Security taxes does not count.

Key Takeaways

  • You need 40 work credits total to receive SSDI, but the timing of those credits matters as much as the number.
  • You must have earned at least 20 of your 40 credits in the 10 years before you became disabled, with some exceptions for younger workers.
  • If you became disabled before age 24, you may need only 6 credits earned in the 3 years before disability, not 40 total.
  • Work credits are based on wages you earned and Social Security taxes you paid, not on how long you worked or the type of job.
  • You can check your exact work history and credits by creating a my Social Security account online or requesting a statement from the Social Security Administration.

How work credits are calculated

Each year, Social Security sets a dollar amount that equals one credit. In 2024, you earn one credit for every $1,550 of wages. This amount increases most years. Because you can earn only four credits per year, you reach the maximum by earning $6,200 in 2024 (four times $1,550).

The year you earned the wages matters, not the year you report them. If you earned $1,550 in 2020, that counts as one credit from 2020, even if you report it to Social Security in 2024. This is why checking your work history record is important—Social Security may not have recorded all your earnings correctly.

If you were self-employed, you report your net profit on your tax return, and Social Security counts that toward your credits. You must have paid self-employment tax on that income. Unpaid work—volunteering, family business help without wages, or caregiving—does not count toward credits.

Work history requirements by age at disability

The work history you need depends on how old you were when you became disabled. This is one of the most misunderstood parts of SSDI, because younger workers actually need less total work history.

If you became disabled at age 31 or older, you need 40 credits total, with at least 20 of those earned in the 10 years before your disability began. This is the standard requirement for most people. If you have 40 credits but only 15 of them are recent, you would not meet the requirement.

If you became disabled between ages 24 and 30, you need 20 credits total, with at least half of them earned in the years since you turned 21. The exact timing depends on your specific age.

If you became disabled before age 24, you need only 6 credits earned in the 3 years before your disability began. You do not need 40 credits total. This rule exists because young people have not had time to build a long work history.

What happens if you do not have enough work history

If you do not have enough work credits, you cannot receive SSDI. There is no partial SSDI—you either meet the work history requirement or you do not. However, you may be able to receive Supplemental Security Income (SSI) instead, which does not require any work history. SSI is a needs-based program for people with disabilities who have limited income and resources, regardless of work background.

Some people are close to meeting the work history requirement. If you became disabled just before reaching the 20-credit mark in your recent work, you might be able to delay your process by a few months to earn additional credits. However, your disability date is determined by medical evidence, not by when you explore, so this strategy only works if your disability is recent.

If you worked in another country, some of that work may count toward SSDI under international agreements between the United States and other nations. This is rare and requires specific documentation, but it is worth asking about if you have worked abroad.

How to check your work history and credits

You can see your work history and credits by creating a free account on my Social Security at ssa.gov. Once you log in, you can view your earnings record and the credits you have earned each year. This record should match your tax returns.

If you see errors—missing years of work, incorrect earnings amounts, or credits that were not recorded—you can request a correction. You have a limited time to correct errors, so checking your record before you explore for SSDI is important. If you find a mistake, Social Security will ask for documentation like old tax returns or W-2 forms.

If you do not have internet access or prefer to work by mail, you can request a Statement of Earnings by calling Social Security at 1-800-772-1213 or visiting your local Social Security office. The statement shows your earnings history and the credits you have earned.

Work history and your benefit amount

Your work history affects not only whether you can receive SSDI, but also how much you receive each month. SSDI payments are based on your Primary Insurance Amount (PIA), which is calculated from your average earnings over your working years. The more you earned (and paid in Social Security taxes), the higher your monthly payment will be.

Social Security uses your highest 35 years of earnings to calculate your PIA. If you have fewer than 35 years of work, they count zeros for the missing years, which lowers your average. This is why people with longer work histories often receive higher SSDI payments than those with shorter histories, even if both meet the minimum work history requirement.

Years when you earned very little still count in this calculation. If you had a year with only one or two credits, that year's low earnings are included in your average. This is another reason to check your earnings record—if Social Security is missing a year when you actually earned significant income, your benefit amount could be calculated too low.

Frequently Asked Questions

Can I get SSDI if I have not worked in the last 10 years?

No, not under the standard SSDI rules. You need at least 20 of your 40 credits earned in the 10 years before your disability began. If you have not worked recently, you would not meet this requirement. However, you may be able to receive SSI instead, which has no work history requirement.

Does part-time work count the same as full-time work?

Yes. Credits are based on how much you earned, not how many hours you worked. You could earn four credits in a year working part-time if you earned enough total wages. The type of job and the hours do not matter—only the wages you earned and the Social Security taxes paid on them.

What if I worked for the federal government or railroad?

Federal employees hired before 1984 and railroad workers may have different rules. Some of their work may not count toward SSDI, or they may be covered by different programs. If you worked for the federal government or a railroad, mention this when you explore so Social Security can review your specific situation.

Do I need to have worked recently to get SSDI?

You need to have earned at least 20 credits in the 10 years before your disability began, but you do not need to have worked in the year you became disabled. If you became disabled in 2024 but your last work was in 2020, that work can still count toward your requirement as long as you have enough recent credits overall.

Can I earn more credits after I start receiving SSDI?

Yes, you can continue working and earning credits while receiving SSDI. However, if you earn above a certain amount each month, your SSDI payment will be reduced or stopped temporarily. This is called the Substantial Gainful Activity (SGA) limit. In 2024, the SGA limit is $1,550 per month, but this amount changes yearly.