A recent 7th U.S. Circuit Court of Appeals ruling in favor of Exxon Mobil underscores the critical role of performance reviews in defending against workplace bias claims. A former laboratory technician alleged sex discrimination in her termination, but Exxon’s detailed performance documentation proved decisive. This case highlights why HR professionals must prioritize thorough, consistent records to protect employers in employment lawsuits.

Performance Reviews as Legal Defense
The plaintiff, a former lab technician at Exxon’s Illinois plant, claimed her firing was due to sex discrimination. She argued two male colleagues, who were not terminated, were comparable to her. However, the 7th Circuit upheld the district court’s summary judgment for Exxon, citing robust performance reviews. These records showed the plaintiff’s consistent underperformance compared to her peers in the “Management Assigned Category” for new hires with relevant experience.
Exxon’s documentation detailed specific performance gaps. For instance, the plaintiff did not meet expectations in her cohort, unlike her male counterparts. The court found no evidence that Exxon’s decision was pretextual. This ruling emphasizes that clear, objective performance reviews can dismantle bias claims. HR teams should ensure evaluations are specific, measurable, and consistently applied to all employees.
Why Documentation Matters in Employment Lawsuits
Thorough documentation is a cornerstone of defending employment lawsuits. The Exxon case shows how performance reviews can provide undeniable evidence of legitimate, non-discriminatory reasons for termination. Management-side attorneys stress that vague or incomplete records weaken an employer’s defense. In contrast, Exxon’s detailed evaluations left little room for the plaintiff to challenge the company’s rationale.
HR professionals must train managers to document performance issues in real time. Regular feedback, tied to measurable goals, strengthens legal defenses. For example, Exxon’s records compared the plaintiff’s output to her peers, offering a clear benchmark. Without such evidence, employers risk losing credibility in court. Documentation isn’t just paperwork—it’s a shield against costly litigation.
Lessons for HR: Mitigating Workplace Bias Claims
The Exxon Mobil ruling offers key takeaways for HR leaders. First, performance reviews must be objective and standardized. Subjective or inconsistent evaluations can fuel perceptions of bias, weakening an employer’s case. Second, HR should audit performance systems regularly to ensure fairness. In the Exxon case, the court noted the plaintiff’s inability to prove her male colleagues were proper comparators, as their performance records differed significantly.
Additionally, HR must foster a culture of transparency. Employees should understand how performance is measured and what steps lead to termination. Clear communication reduces the risk of bias claims. Finally, training managers to avoid discriminatory language or practices is critical. The 7th Circuit’s decision shows that strong documentation can protect employers, but proactive bias prevention is equally vital.




