Disparate impact explained: the definition, how disparate impact discrimination arises in hiring tests, a short example and how employers check for it.
The short answer
Disparate impact is a legal concept in US employment law: a practice that looks neutral, such as a test or a requirement, but disproportionately excludes members of a protected group. EEOC guidance explains that such a practice can be unlawful unless the employer shows it is job-related and consistent with business necessity.
Definition
A neutral employment practice that disproportionately excludes members of a protected group.
How should you use this idea?
Check selection rates and keep every requirement job-related; a neutral rule can still need justification.
Put it in context
Start with the specific decision you are making, the skill the job requires and the limitations of your evidence. Document your interpretation and give candidates a consistent process.
For legal or regulatory conclusions, obtain qualified advice for your location and circumstances. A glossary definition cannot resolve those questions.
Disparate impact discrimination does not require intent. It arises when a neutral rule, such as a height requirement or a test, screens out one protected group at a much higher rate, and the employer cannot show the rule is needed for the job. A disparate impact example: a written test that rejects far more applicants of one national origin for a role that needs little reading. Employers usually check for it with an adverse impact analysis and the four-fifths rule.
How employers reduce the risk
Use tests and requirements that are clearly job-related, give everyone the same conditions and accommodations, review selection rates after each round, and consider alternatives that measure the same skill with less impact. Keep records of why each step is used. The hiring process for small businesses and the guide are pre-employment tests legal? explain the basics.
Checking for it in a small business
A small business can check for this risk without special software. After each hiring round, count how many applicants from each group took each step and how many passed, then compare the rates. Where one group passes at a much lower rate, look at whether that step measures something the job truly needs, and record what you find and change.
How do you define disparate impact in one sentence?+
It is when a neutral employment practice disproportionately excludes members of a protected group. Under EEOC guidance, it can be unlawful unless the practice is job-related and consistent with business necessity.
What is a disparate impact example in hiring?+
A reading test for a warehouse role that applicants from one protected group fail at a much higher rate than others, where the job itself needs little reading and the employer cannot show the test is needed.
Is it the same as adverse impact?+
They describe the same pattern. Adverse impact is the term used in the Uniform Guidelines for the statistical difference; disparate impact is the legal theory used in Title VII cases and EEOC guidance.
Which hiring steps should be reviewed first?+
Start with the steps that screen out the most applicants, such as minimum requirements, knock-out questions and timed tests. Compare pass rates for each group at that step, check whether the requirement reflects a real part of the job and look for an option that measures the same skill with less difference between groups. Then repeat the comparison after the next round to confirm the change helped.
What records should an employer keep?+
Keep the number of applicants from each group at each step, how many passed, the reason each step is used and any adjustments made. These records support a review after each round and help explain decisions if they are questioned later.
Does it require intent to discriminate?+
No. The key point is the effect of a neutral practice on a protected group, not the employer's intent. That is why employers monitor selection rates even when every step is applied the same way to everyone.
Which hiring practices most often cause it?+
Common sources include unnecessary requirements such as degrees or years of experience, tests that measure something the job does not need, very high cut-off scores, and timing or formats that disadvantage people who need adjustments.
Hire on evidence, fairly
Short, job-relevant tests with the same conditions for every candidate. Free for five candidates a month.
