What is adverse impact in hiring, and how do you test for it in your selection process?

[Eleni]

Our TA team is reviewing our screening process and wants to check if any steps are creating adverse impact. Adverse impact occurs when a neutral employment practice — like a test or screening criteria — disproportionately excludes members of a protected group at a higher rate than others. The 4/5ths rule is commonly used to flag potential issues. How does your team audit for this, and what tools or methods have been most practical?

 

[wellow]

Adverse impact in hiring occurs when a selection process disproportionately disadvantages a protected group, even if unintentionally. It is tested by comparing selection rates between groups, often using the four-fifths rule or statistical tests. If one group’s hiring rate is less than 80% of the highest group, adverse impact may exist.

 

[darrensammy]

Adverse impact in hiring happens when a selection process has an unintended effect that disadvantages a group (e.g., females, racial group, age). The employers have a tendency to use the “four-fifths rule” to determine whether it exists – a comparison of group selection rates – to test for it. If one group’s rate is less than 80% of another’s, it may indicate potential bias.

 

[Mr.Beast]

"I think 'adverse impact' is a crucial concept in hiring, especially when it comes to avoiding unconscious bias. Essentially, it refers to a situation where a particular group is disproportionately selected or excluded due to a policy or process. To test for it, I recommend using blind hiring practices, standardized interview questions, and data-driven analytics to ensure fairness and equity in your selection process."

 

[maria]

Adverse impact in hiring occurs when a neutral hiring practice unintentionally disadvantages a protected group, such as based on race or gender. Employers often test for it using the Four-Fifths Rule, recommended by the Equal Employment Opportunity Commission, which compares the selection rates of different groups to check for possible discrimination.

 

[Tight Eyez]

Adverse impact in hiring happens when a seemingly neutral hiring practice like a test, screening rule, or interview step disproportionately excludes members of a protected group (such as by race, sex, or ethnicity) more than others. Employers often test for it by comparing selection rates across groups using the “four-fifths rule” (80% rule): if one group’s hiring rate is less than 80% of the highest group’s rate, it may signal potential adverse impact and warrant deeper statistical and legal review. Regular audits of applicant, interview, and hiring data help identify and correct biased selection practices.