Adverse Impact Formula:
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Adverse impact occurs when a selection process results in a substantially different selection rate for members of a protected group compared to members of a majority group. The EEOC (Equal Employment Opportunity Commission) uses the 80% rule (or four-fifths rule) to determine if adverse impact exists.
The calculator uses the EEOC's 80% rule formula:
Where:
Interpretation: If the ratio is less than 0.8 (80%), adverse impact is indicated and the selection process may require further investigation.
Details: Adverse impact analysis helps organizations identify potentially discriminatory hiring practices, ensure compliance with equal employment opportunity laws, and promote fair and equitable selection processes.
Tips: Enter the number of minority and majority applicants selected and the total number of applicants in each group. All values must be non-negative integers, and selected counts cannot exceed total applicants.
Q1: What is the 80% rule?
A: The 80% rule states that adverse impact exists when the selection rate for a protected group is less than 80% of the selection rate for the majority group.
Q2: What constitutes a protected group?
A: Protected groups include race, color, religion, sex, national origin, age (40+), disability, and genetic information under federal EEO laws.
Q3: Is adverse impact the same as intentional discrimination?
A: No, adverse impact refers to unintentional discrimination where neutral policies disproportionately affect protected groups, while disparate treatment involves intentional discrimination.
Q4: What should I do if adverse impact is detected?
A: Investigate the selection process, validate the job-relatedness of selection criteria, and consider alternative selection methods that reduce adverse impact while maintaining validity.
Q5: Are there statistical tests beyond the 80% rule?
A: Yes, statistical significance tests like chi-square or Fisher's exact test may be used to supplement the 80% rule analysis, especially with small sample sizes.