
A disparate impact case is a type of lawsuit that challenges a policy or practice as discriminatory, even if it was not intended to be so.
The term "disparate impact" was coined by the US Supreme Court in 1971, in the case of Griggs v. Duke Power.
Disparate impact cases are often brought by individuals or groups who claim that a policy or practice has a disproportionate effect on a particular racial or ethnic group.
In the case of Texas Department of Housing and Community Affairs v. Inclusive Communities Project, the US Supreme Court ruled that disparate impact claims are viable under the Fair Housing Act.
The disparate impact theory is based on the idea that even if a policy or practice is neutral on its face, it can still have a discriminatory effect if it disproportionately affects a particular group.
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Understanding Disparate Impact
Disparate impact occurs when a facially neutral employment practice has a disproportionate effect on certain groups of people. This can happen even if the practice appears fair at face value.
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A routine credit check, for example, may unintentionally screen out minority applicants. This is because systemic racism can make it difficult for minorities to find and hold higher-paying positions, leading to lower credit scores compared to white applicants.
Disparate impact is often the result of using a practice that appears fair but is actually discriminatory in its application or outcome. Employers may believe they're being fair by applying consistent standards for all, but these practices may actually be advantageous for certain groups while disadvantaging others.
The key is to make your protocols equitable, not equal. This means understanding the effects of your policies and practices, rather than just focusing on making them appear fair.
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Real World Examples
Disparate impact can occur in the hiring process itself, often through familiar screening methods like background checks or past work experience.
A routine credit check may unintentionally screen out minority applicants because systemic racism can make it difficult for minorities to find and hold higher-paying positions.
These screening methods may be fair on the surface but can be advantageous for certain groups while disadvantaging others.
Credit scores can be lower for minority applicants due to their limited access to higher-paying positions, making it harder for them to pass a credit check.
Employers may believe they're being fair by applying consistent standards for all, but these practices can lead to disparate impact.
The key is to make your protocols equitable, not equal, which means considering the potential impact on different groups of people.
vs Adverse: Are They the Same?
Disparate Impact vs Adverse: Are They the Same?
Disparate Impact and Adverse Impact are often used interchangeably, but they're not exactly the same thing.
Disparate Impact involves a disproportionate effect on a protected group, which can be shown through statistical evidence.
In the context of employment, Disparate Impact is a key concept that helps HR professionals identify and address unfair policies or practices.
Disparate Impact focuses on the effects of policies or practices, rather than the employer's intentions.
Here's a key difference between Disparate Impact and Disparate Treatment:
What Is Treatment?
Disparate treatment is an intentional form of discrimination. It's often the result of decision-making processes that purposely treat members of a protected class differently from other employees.
Disparate treatment involves intentional discrimination, which means the employer's actions are not neutral or fair. This is a key distinction from disparate impact, which does not involve intentional discrimination.
To prove disparate treatment, an affected individual must show that an employer intentionally treated them differently due to their membership in a protected group. This can be difficult to do, especially if the employer claims they were simply following a neutral policy.
Disparate treatment can take many forms, including using different pay scales for men and women. This is a classic example of disparate treatment, where the employer is intentionally paying employees differently based on their gender.
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In contrast to disparate impact, disparate treatment requires proof of discriminatory intent. This means the employer's actions must be shown to be motivated by a desire to discriminate against a protected group.
Here are some key differences between disparate treatment and disparate impact:
- Intent: Disparate treatment involves intentional discrimination, while disparate impact does not.
- Focus: Disparate treatment examines the employer's actions and motives, while disparate impact assesses the effects of policies or practices.
- Evidence: Disparate treatment requires proof of discriminatory intent, while disparate impact relies on statistical evidence showing a disproportionate effect on a protected group.
Legal Framework
To defend against disparate impact cases, it's essential to understand the legal framework.
The defense of business necessity requires three conditions to be met: the practice in question must be apparently neutral, uniformly applied, and have a disparate impact on a protected class.
Be aware that a neutral practice doesn't necessarily mean it's fair, so it's crucial to scrutinize your processes.
Uniform application is also key, as inconsistent practices can lead to disparate impact claims.
A disparate impact is defined as a practice that affects a protected class, even if it's not the employer's intention.
To protect yourself from false allegations, document each action, including hiring processes, job applicants, and rejections.
Keep notes on the reasons for promotions and pay increases, as well as any disciplinary actions or dismissals.
For example, if an employee is dismissed due to poor professional performance, record specific examples demonstrating a lack of ability.
Identifying and Proving Disparate Impact
Disparate impact is a complex issue, but it's more about gauging significance than meeting a specific threshold.
Many experts use the "80% Rule" to determine if an employer's practices have an adverse impact on a minority group. This rule can be applied mathematically by dividing the non-minority group's selection rate by the minority group's rate.
The "80% Rule" works like this: if 90% of white candidates are hired out of 100 applicants, but only 60% of minority candidates are hired out of 100 applicants, the minority group's selection rate is about 67% of the rate for white applicants, which falls below the acceptable 80% threshold.
Consistency is key in hiring practices, and employers should strive to use standardized questions to ensure fairness for all applicants. This can include oral exercises during interviews, where each individual is asked the same set of situational questions.
Some experts have questioned the effectiveness of the "80% Rule", suggesting that discrepancies may be due to legitimate factors like culture, geography, or required qualifications. In these cases, professionals may turn to comparing an employer's actual rate with the rate that would occur if decisions were being made at random.
On a similar theme: The ICon Group Case
Responding to Disparate Impact Claims
To determine if disparate impact is happening, you need to calculate the selection rate ratio. This is done by dividing the non-minority group's selection rate by the minority group's rate. For example, if 90% of white candidates are hired and 60% of minority applicants are hired, the ratio would be 90% divided by 60%, which is about 67% - below the acceptable 80% threshold.
The 80% rule is a useful tool for identifying disparate impact, but it's not the only factor to consider. Employers must also examine whether the practice in question is business necessity. To qualify as business necessity, the practice must meet three conditions: it must be apparently neutral, uniformly applied, and have a disparate impact on a protected class.
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Court Rules in Favor of HUD
The 80% rule is a crucial benchmark for determining disparate impact, and it's based on a simple math problem. Imagine a scenario where 90% of white applicants are hired, but only 60% of minority applicants are hired.
This disparity can be calculated by dividing the non-minority group's selection rate (90%) by the minority group's rate (60%), which results in a ratio of about 67% to 90%. This ratio falls below the acceptable 80% threshold, indicating disparate impact.
The HUD's victory in court highlights the importance of considering disparate impact in hiring practices.
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Responding to Claims in the Workplace
To respond to disparate impact claims, the affected employee(s) must prove that a specific practice is causing an adverse impact on a group of protected individuals.
The employer must demonstrate that the practice is a "business necessity" or job-related.
If the employer fails to justify their behavior, the employee wins.
The process involves several key steps, including proving the existence of a disparate impact and justifying the business necessity of the practice in question.
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Document Decisions for Legal Protection
Documenting your decisions is crucial in protecting yourself from false allegations. It's essential to keep notes about hiring processes, job applicants, and rejections. This includes recording the reasons for promotions and pay increases.
Carefully documenting disciplinary actions or dismissals is also vital. For instance, if an employee is dismissed due to poor professional performance, it's essential to record specific examples demonstrating a lack of ability.
Having these records in place will help you defend your reasoning behind your actions in case of a disparate impact or treatment claim.
Preventing and Mitigating Disparate Impact
To prevent disparate impact in hiring, it's essential to design a consistent and fair recruitment process. This means using standardized questions and procedures throughout all hiring stages.
Be consistent across all hiring stages by using the same set of situational questions for each candidate. For example, if you choose to incorporate oral exercises during an interview, ask each individual the same set of questions. This reduces the likelihood of intentional discrimination, but it's still crucial to audit your questions to ensure they aren't inherently biased.
Train assessors to evaluate candidates fairly and objectively by focusing on the right competencies. For instance, if an assessor is scoring a candidate's answer, they should use the same criteria, such as originality, reasoning, or comprehension. They should never focus on traits unrelated to the answer.
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How Big of a Problem
Employers can no longer afford to ignore disparate impact, a phenomenon that affects even the most standardized of practices.
Even the general practitioner clinical examination in medicine causes an adverse impact, with ethnic minority doctors four times more likely to fail the examination than their white counterparts.
The disparity begins in medical school, where minority students receive less supportive social and learning environments and are subject to discrimination and racial harassment.
This sets the stage for a pattern of disparate impact that can have serious consequences for employers.
In fact, evidence has shown that disparate impact can lead to a disproportionate number of minority students failing medical school exams.
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Preventing Bias in Hiring
To prevent bias in hiring, consistency is key. Design your recruitment process to be fair for all applicants by using standardized questions.
Using the same set of questions for each candidate can help reduce intentional discrimination. However, it's also essential to audit your questions to ensure they aren't inherently biased.

Assessors must be trained to evaluate people fairly and objectively. They should score candidate answers according to the same criteria, such as originality, reasoning, or comprehension.
Train your assessors to avoid focusing on traits unrelated to the answer. This will help prevent them from falling into patterns influenced by conscious or unconscious biases.
Regular monitoring and auditing of your processes can help identify potential issues. Review your training process several times a year to ensure assessors are following best practices.
Monitoring the results of the hiring process can also help you test for inconsistencies. Look for patterns that may indicate adverse impact, such as consistently dismissing candidates from certain protected groups.
Business Necessity and Justification
In a disparate impact case, the employer's practice may be justified if it's a business necessity. This means the employer must explain why their process is essential to the operation of the business.
From a legal standpoint, the employer must show that the practice is a business necessity, and not just a pretext for discrimination. The burden of proof shifts to the employer if there's evidence of disparate impact.
The employer's practice must be apparently neutral, uniformly applied, and have a disparate impact on a protected class. This is a crucial condition for using the business necessity defense.
In some cases, a business necessity can be a legitimate reason for a practice that causes adverse impact. For example, casting a male for a male role in a movie is a business necessity.
Here are the three conditions that must exist before an employer can use the business necessity defense:
- Be apparently neutral
- Be uniformly applied
- Have a disparate impact on a protected class
A business necessity can be a job requirement, like being able to carry 50 pounds minimum for a firefighter position. This requirement may have a disparate impact on many female applicants, but it's considered a job-related necessity for safety reasons.
In contrast, refusing to interview a woman for a job because customers may prefer to have a man in that role is not a legitimate business necessity.
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Key Concepts and Definitions
Disparate impact cases involve policies or practices that may not be explicitly discriminatory but still have a disproportionate impact on certain groups.
A disparate impact occurs when a facially neutral policy or practice has a significantly disparate impact on a protected class, such as racial or ethnic minorities.
The disparate impact can be due to a variety of factors, including but not limited to, flawed testing methods or biased data.
In Griggs v. Duke Power, a landmark case, the Supreme Court ruled that the company's high school diploma requirement had a disparate impact on African American employees, even though it was not explicitly discriminatory.
Disparate impact cases often involve employment practices, such as hiring or promotion policies, that have a disproportionate impact on certain groups.
The disparate impact can be intentional or unintentional, but it is still considered a form of discrimination under the law.
In disparate impact cases, the plaintiff must show that the policy or practice has a disparate impact on a protected class and that the impact is not justified by a legitimate business necessity.
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