Comparator Evidence Must Reflect Comparable Performance Problems, Not Isolated Lapses, to Survive Summary Judgment in Race-Based Termination and Hostile-Work-Environment Claims

Case: LaDonna Blewett v. Nikole Howard-Whisett; City of Detroit, Michigan, dba Detroit Water and Sewerage Department
Court: Court of Appeals for the Sixth Circuit
Date: 2026-01-21
Disposition: Summary judgment for defendants affirmed (not recommended for publication).

Introduction

LaDonna Blewett, an African-American “professional administrative analyst” (staff accountant) in the Detroit Water and Sewerage Department’s treasury unit, sued the City of Detroit and her supervisor, Nikole Howard-Whisett, after being terminated in October 2020. Blewett alleged race discrimination under (1) the Equal Protection Clause via 42 U.S.C. § 1983 and (2) Michigan’s Elliott-Larsen Civil Rights Act (ELCRA), and she also asserted a race-based hostile work environment claim under ELCRA.

The central issues on appeal were whether Blewett produced sufficient evidence to (a) establish a prima facie case of disparate treatment—particularly through comparator evidence involving a white coworker, Dawn Green—and (b) show race-based harassment severe or pervasive enough (and inadequately addressed enough) to support a hostile work environment claim.

Summary of the Opinion

The Sixth Circuit affirmed summary judgment for the supervisor and the City on all claims. For disparate treatment, the court held Blewett failed to show that her proposed comparator, Dawn Green, was “similarly situated in all relevant respects,” because Blewett’s record reflected persistent, well-documented problems with timeliness, accuracy, and dependability over several years, whereas the evidence of Green’s issues amounted (at most) to a single substantially delayed assignment.

For hostile work environment, the court held Blewett did not create a triable issue that any harassment she experienced was “based on” race: the one race-specific comment (“where is your slave driver”) was made by a different employee outside her department and was met with discipline, and Blewett’s comparative theory failed for the same lack-of-similarity reasons as her disparate-treatment claim. Critically, Blewett also testified that she did not believe her supervisor’s alleged threatening comments were made because she is African American.

Analysis

1) Precedents Cited (and How They Shape the Decision)

  • Fed. R. Civ. P. 56(a); Anderson v. Liberty Lobby, Inc., 477 U.S. 242 (1986); Chapman v. UAW Local 1005, 670 F.3d 677 (6th Cir. 2012) (en banc); McKay v. Federspiel, 823 F.3d 862 (6th Cir. 2016): These authorities supply the summary-judgment framework—materiality, genuineness, viewing evidence favorably to the nonmovant, and de novo review. They anchor the court’s refusal to treat unsupported inferences or thin proof as a “genuine dispute” requiring trial.
  • Abercrombie & Fitch Stores, Inc. v. Am. Eagle Outfitters, Inc., 280 F.3d 619 (6th Cir. 2002): The panel invoked the principle that it may “affirm on any ground supported by the record,” diminishing the practical significance of Blewett’s argument that the district court misapplied the summary-judgment standard.
  • Ondricko v. MGM Grand Detroit, LLC, 689 F.3d 642 (6th Cir. 2012); Sutherland v. Mich. Dep't of Treasury, 344 F.3d 603 (6th Cir. 2003): The court used these decisions to align ELCRA race discrimination claims and Equal Protection employment discrimination claims (via § 1983) with the Title VII evidentiary framework, enabling a single McDonnell Douglas analysis for both.
  • Redlin v. Grosse Pointe Public School Sys., 921 F.3d 599 (6th Cir. 2019); Wheat v. Fifth Third Bank, 785 F.3d 230 (6th Cir. 2015): These cases underscore that the prima facie burden is “not an onerous one,” but still requires evidence—particularly on the “similarly situated” element when comparator proof is offered.
  • Ercegovich v. Goodyear Tire & Rubber Co., 154 F.3d 344 (6th Cir. 1998): This is the controlling comparator standard: a plaintiff need not show an “exact correlation,” but must show the comparator is similar in “all of the relevant aspects.” The court applied Ercegovich to conclude that markedly different performance histories are a “relevant aspect” that can defeat comparator status.
  • McMillan v. Castro, 405 F.3d 405 (6th Cir. 2005); Seay v. Tenn. Valley Auth., 339 F.3d 454 (6th Cir. 2003): Cited to reinforce that employees may be similarly situated even without identical duties or supervisors—helpful to Blewett in theory, but ultimately not enough. The opinion uses these cases to clarify that the decisive mismatch here was not job title, but the scope and persistence of performance problems.
  • Boykin v. Family Dollar Stores of Mich., LLC, 3 F.4th 832 (6th Cir. 2021): The court used Boykin to reject attempts to manufacture a factual dispute via “convenient memory lapses,” in the context of Blewett’s shifting account of what “late 101 days out of 214” meant.
  • Khalaf v. Ford Motor Co., 973 F.3d 469 (6th Cir. 2020); Strickland v. City of Detroit, 995 F.3d 495 (6th Cir. 2021); Oncale v. Sundowner Offshore Servs., Inc., 523 U.S. 75 (1998): These guide the hostile-work-environment analysis: the five elements (Khalaf), evidentiary routes to prove race-based harassment (Strickland), and the requirement that conduct be discriminatory—not merely offensive (Oncale).

2) Legal Reasoning

(a) Disparate treatment (ELCRA and Equal Protection via § 1983). The panel treated Blewett’s ELCRA and Equal Protection discrimination claims as governed by the same McDonnell Douglas structure. It resolved the case at the prima facie stage—specifically the “similarly situated” comparator element—by focusing on whether Green’s record was comparable in the “relevant aspects” that led to Blewett’s termination: sustained lateness, repeated errors, and declining dependability ratings documented across 2018–2020.

The City’s evidence was detailed and longitudinal: performance reviews describing ongoing inaccuracies and missed deadlines, with quantified measures (e.g., late “101 days out of 214” and late “10 months out of 12” for monthly reconciliation expectations) and a termination form citing repeated rework (“journal entries had to be done over 2 or 3 times due to errors”). Against that, Blewett offered essentially one comparator datapoint: her recollection of an email suggesting Green had a reconciliation item outstanding for 150 days. Even granting that fact as true at summary judgment, the court held a single late assignment does not make Green comparable to an employee with persistent, documented deficiencies. Because comparator similarity failed, the claims failed.

The court also addressed Blewett’s effort to recharacterize the “101 days out of 214” statistic as meaning she was late once by 101 days (as opposed to late on 101 deadlines), concluding that her inability to recall specifics did not create a genuine factual dispute under Boykin. Importantly, the panel did not need to decide which interpretation was correct; it relied on the broader record demonstrating recurring performance problems.

(b) Hostile work environment (ELCRA). The panel applied the five-element test from Khalaf and stressed element three: the harassment must be “based on” race. Blewett identified (i) a race-specific comment (“where is your slave driver”) by an employee outside her department and (ii) allegedly harsher supervisory treatment compared with Green. The first failed because the City responded with discipline (two-week suspension), undermining element five (employer failed to act). The second failed because the comparative proof did not establish race-based differential treatment: Green was not a meaningful comparator on performance, and thus the disparity did not support an inference that the harassment was “because of” race as required by Oncale and explained in Strickland.

The court further treated Blewett’s own testimony as fatal to causation: when asked whether she believed her supervisor’s conduct occurred because she is African American, Blewett answered “No.” That admission severely undercut the “based on race” element.

3) Impact

Although unpublished, the opinion reflects several practice-significant points in Sixth Circuit employment litigation:

  • Comparator evidence must be proportionate and contextual. A plaintiff cannot ordinarily establish “similarly situated” status by pointing to an isolated lapse by a coworker when the employer’s stated concern is a sustained pattern of timeliness/accuracy problems supported by multi-year documentation.
  • Performance documentation can defeat discrimination claims early. Detailed reviews that quantify lateness and errors, show declining ratings over time, and match termination paperwork can support summary judgment even when some facts (like the exact meaning of a statistic) are disputed.
  • Hostile-environment claims require discrimination, not just conflict. Supervisory criticism, threats of discipline, or harsh management styles do not become actionable absent evidence tying the conduct to race; a plaintiff’s own testimony disclaiming racial motivation can be decisive.
  • Employer response matters. Where a race-specific slur is followed by discipline, plaintiffs may struggle to satisfy the “knew or should have known but failed to act” element.

Complex Concepts Simplified

  • Summary judgment: A pretrial ruling where the judge decides there is no real factual dispute for a jury to resolve, so one side wins as a matter of law.
  • McDonnell Douglas framework: A three-step method for proving discrimination with circumstantial evidence: (1) the employee makes a basic (“prima facie”) showing suggesting discrimination; (2) the employer gives a legitimate, non-discriminatory reason; (3) the employee shows that reason is “pretext” (not the real reason).
  • “Similarly situated” comparator: A coworker used as a comparison point must match the plaintiff in the important ways that matter to the employer’s decision (e.g., comparable performance history, rule violations, decisionmakers, and seriousness/frequency of issues), not necessarily in every detail.
  • Hostile work environment: A workplace becomes legally “hostile” when harassment is sufficiently serious or pervasive and is because of a protected trait (here, race), and the employer fails to respond appropriately.

Conclusion

The Sixth Circuit affirmed summary judgment because Blewett’s comparator evidence did not show a similarly situated employee outside her protected class was treated better: her record reflected persistent, documented performance problems, while the evidence against her proposed comparator suggested (at most) an isolated delay. The hostile work environment claim also failed because the record did not support that the complained-of conduct was race-based, the City acted on the one race-specific comment, and Blewett herself denied her supervisor’s conduct was motivated by race. The opinion underscores a recurring lesson in discrimination litigation: without concrete, comparable proof linking differential treatment or harassment to race, courts will not send a case to a jury merely because workplace conflict or criticism occurred.