Kara Mitchell v. Exxon Mobil Corporation

Court of Appeals for the Seventh Circuit·Decided July 25, 2025·No. 24-2823·Published

Opinion

In the

United States Court of Appeals For the Seventh Circuit

No. 24-2823 KARA MITCHELL, Plaintiff-Appellant,

v.

EXXON MOBIL CORPORATION, Defendant-Appellee.

Appeal from the United States District Court for the Northern District of Illinois, Eastern Division. No. 1:21-cv-06876 — Elaine E. Bucklo, Judge.

ARGUED MAY 13, 2025 — DECIDED JULY 14, 2025

Before EASTERBROOK, BRENNAN, and PRYOR, Circuit Judges. BRENNAN, Circuit Judge. Kara Mitchell worked as a laboratory technician for Exxon Mobil Corporation for a little over a year before she was terminated in 2020. ExxonMobil says it fired her because she compared unfavorably to peers in the company’s annual employee assessment process. Mitchell says ExxonMobil fired her because she is a woman.

2 No. 24-2823

She sued the company for sex discrimination under Title VII of the Civil Rights Act of 1964. The district court granted summary judgment to ExxonMobil because Mitchell failed to provide sufficient evidence for her claim. We agree and af- firm.

I. Background

A. ExxonMobil’s Employee Assessment Process ExxonMobil employs tens of thousands of employees worldwide, including about 20,000 in the United States. Every year, the company conducts a complex, multi-step performance assessment to evaluate the achievements and progress of its large workforce. This process, described in an internal company manual available to employees, is at the center of Mitchell’s challenge.

At the beginning of every performance assessment period, employees complete a one-page summary of their accomplishments , strengths, and development opportunities during the previous 12 months. They also select co-workers to evaluate their performance. Supervisors rely on the self-assessment , feedback from co-workers, and their own judgment to assign preliminary assessment categories to employees. These categories may be adjusted up or down at a conclusive assessment group meeting.

Assessment groups comprise employees in similar roles with similar experiences. Nevertheless, employees in the group may have different job titles, report to different supervisors , and work in different locations across the country. During the group meeting, each employee is represented by a member of management, usually the employee’s direct supervisor . ExxonMobil relies on this relative assessment process

No. 24-2823 3

because comparing employees with their peers “meets [] principles of meritocracy, performance differentiation, and continuous improvement.”

The assessment process differs based on an employee’s responsibilities . Mitchell, an “operational, clerical, and administrative ” employee, was assessed by a process that assigns performance categories A, B, C, or D to employees in the assessment group. 1 Guidelines set quotas for the number of employees who can be assigned each category. Per the manual, this ensures that all assessment groups “will meet a standard distribution, and each group will stand on its own.”

Once supervisors reach consensus about employees’ relative performance and assign final performance categories that accord with the quotas, they communicate the final category, and the reasons for that result, to employees. In turn, employees are expected to incorporate that feedback into their individual development plans.

Employees who are assigned category D are placed on ExxonMobil’s Management of Lower Relative Performance program. That program gives employees the option either to continue working under a performance improvement plan or to resign and receive a base salary and outplacement services until a specified date. Those who choose the latter, also called

1 Another assessment process applies to “managerial, professional,

and technical” employees.

Operational, clerical, and administrative employees are ranked as outstanding (including a subcategory of outstanding with distinction); excellent ; very good; good; and in need of improvement (including a subcategory for in need of significant improvement).

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the “Pay in Lieu” option, agree to sign a separation agreement and release claims.

During the 2019–2020 performance assessment cycle at issue here, the performance improvement plan option was not available to employees who fell into the Management Assigned Category (“MAC”), meaning they were a new hire with three or more years of relevant experience before joining ExxonMobil. MAC-designated employees assigned category D could choose either to receive Pay in Lieu or be terminated without the benefits of Pay in Lieu.

B. Mitchell’s Assessment ExxonMobil operates a fuel and lubricants plant in Cicero, Illinois. Mitchell began work at the testing laboratory there in March 2016 as a contractor while employed by a staffing company . As a lab technician, she tested samples of the products entering and leaving the facility.

In 2019, after approximately three years as a contractor, colleagues Jeffrey Hayes and Karen Hasberger encouraged Mitchell to apply for a full-time position with ExxonMobil at the Cicero plant. She was hired on April 22, 2019. Her title and work responsibilities did not change when her employer became ExxonMobil, and they remained the same until her termination on August 28, 2020.

Mitchell worked with two other lab technicians, Victor Aguirre and Daniel Pitts. The parties dispute who supervised these employees. The company maintains that although Hayes was based in the Paulsboro, New Jersey facility, he supervised all the lab technicians at Cicero. Mitchell counters that Hasberger, a chemist at the lab, was her direct supervisor. After Hasberger left the company, Mitchell says the

No. 24-2823 5

supervisory role passed to a male employee. Still, she claims, her performance was ultimately reviewed by three other supervisors : Cicero plant manager Raul Sanchez, Hayes, and their direct supervisor Louis Henry “Hank” Muller.

Mitchell had her first and only performance assessment by ExxonMobil approximately one year into her full-time employment . As the manual required, she drafted a one-page summary of her accomplishments, strengths, and areas for development. She also selected five co-workers to evaluate her, including her two colleagues from the Cicero lab, Aguirre and Pitts.

Mitchell met with Hayes to discuss her performance.

Mitchell offered conflicting statements as to whether Hayes told her which preliminary assessment category she was assigned . She said first that she learned she was assigned category B during that conversation. But later in her deposition, when asked what Hayes “conveyed” to her about her performance during that conversation, she responded, “I don’t recall .” A June 9, 2020, email Hayes sent to Shannon McGuire in human resources assigned category B to all three lab technicians .

On June 15, Muller emailed the cluster of supervisors he managed to discuss the preliminary assessment categories for eleven employees in their departments. Muller explained that the categories assigned to the operational, clerical, and administrative employees had to meet a new “required distribution .” 2 That meant, he instructed, that category A must be

2 Muller’s email contained a table displaying the expected distribution

of performance categories within an assessment group. Employees assigned the letter A for outstanding contributor were expected to make up 6 No. 24-2823

assigned to two employees and category C to two other employees .

To satisfy that distribution, Muller lowered Pitts to category C but kept Aguirre and Mitchell at category B. Muller indicated the proposed categories were not final and asked the supervisors he managed to “reply back with agreement or a different proposed category and rationale.”

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