Retirement Social Security

Short Work History? The Costly Social Security Penalty That Could Blindside You in Retirement

If you have worked for less than 35 years, your Social Security check could be smaller than you expected.

By Christy Rakoczy Bieber , Edited by Laura Hohenstein

Updated June 5, 2026

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Understanding the income that Social Security will provide in your later years is very important as you make your retirement plan.

Unfortunately, many people end up blindsided when they claim their Social Security because they end up with monthly benefits much lower than they expected them to be, and they don't know why their checks aren't bigger.

You don't want this to happen to you, so it's important to understand exactly how your work history can affect the amount of your monthly retirement benefits.

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How are your monthly retirement benefits calculated?

The first key to understanding what Social Security will do for you is to learn exactly how retirement benefits are calculated.

The Social Security Administration uses a formula to calculate retirement benefits that is based on Average Indexed Monthly Earnings (AIME). Here's how it works:

The SSA keeps track of the income you earn (and pay Social Security tax on) throughout your entire career. It goes on your earnings record.
Your wages over your career are adjusted to account for the impact of inflation.
The SSA calculates your AIME based on your monthly average wage in your 35 highest-earning years.
You are paid retirement benefits equal to a specific percentage of your AIME (with that percentage based on how high your average monthly earnings are).

This calculation gives you your primary insurance amount (PIA), or standard benefit. Your PIA can then be increased or decreased depending on whether you claim Social Security at your full retirement age (FRA), before your FRA, or after your FRA.

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How does your work history affect your monthly benefit?

As you can see, the most important factor in this calculation is the average wages you earned over 35 years.

Unfortunately, if you work for less than 35 years, the Social Security Administration doesn't adjust its formula based on your own personal career path. Your retirement benefits are still going to be calculated based on inflation-adjusted average wages over 35 years.

This means if you took some time off, started working late, or retired early, your benefits may end up much lower because of those employment gaps or limited working years. If you only have a 30-year work history, for example, then you will have five years of $0 wages factored into your benefits formula. This will reduce your average wage and monthly benefit.

Likewise, if you work exactly 35 years, but during some of those years you worked part-time and earned very little, your average wage will be dragged down by those years when your salary was not very high.

Who is most affected by this issue?

Since retirees get a lower benefit if they don't have 35 years of robust earnings, many people end up getting Social Security checks that are well below the amount they were expecting or hoping for.

Retirees who are most likely to be affected by this issue include:

Caregivers who took time off from work
People who started working late in life and who didn't get a full 35 years of work in
People who are retiring very early, before working for at least 35 years
Part-time workers or those who were unemployed for large parts of the year, and who have a low average wage

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What can you do if your work history brings your benefits down?

If this issue affects you and you're stuck with a small Social Security benefit because of it, you have a few options:

You can try to work longer

If you are earning more later in life than you did earlier in your career, or if you don't yet have a full 35 years of work history, you can try to work longer to replace low-earning years or zero-earning years in your benefits calculation. You can keep working even after claiming benefits (although earning limits apply if you haven't yet reached FRA), so you can still increase benefits even after claiming them.

You can claim spousal benefits

If you are married, you may be able to claim spousal benefits on your spouse's work record instead of your own retirement benefits. You are entitled to collect spousal benefits that equal as much as 50% of the primary earner's benefit. This could be much more than your own benefit if there were a big earnings gap.

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You can plan for a smaller benefit

As long as you worked for at least 10 years and earned at least 40 work credits, you will still collect Social Security even if your benefit isn't very high. You can prepare to have other sources of retirement savings to supplement your smaller benefit.

Bottom line

The work history rules are just one of many factors that can affect the size of your Social Security checks. Other factors include the age at which you claim benefits, whether you claim on your spouse's work record or your own, and whether you live in a place where you are taxed on Social Security benefits at the state level.

If you want to maximize your senior benefits, you need to understand what your benefits will do for you and how decisions you make throughout your working life will affect your Social Security income. Deciding to put in a few extra years could give you more lifetime income, but you'll only know to do that if you understand how the formula works.

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