Evidence & Strategy· 12 min read

Comparator Evidence: The Art of Finding Your "Similarly Situated" Employee

Discrimination cases are comparative by nature. To show you were treated worse because of a protected characteristic, you almost always need to show how someone without that characteristic was treated. That person is your comparator. Finding the right one — and presenting that comparison effectively — is one of the most consequential strategic decisions in an employment discrimination case.

Why Comparators Matter

In a direct evidence case, you have a supervisor's email saying "we need someone younger in this role" or a manager's statement that women aren't suited for field positions. Those cases exist but are rare. In the much more common circumstantial case, the inference of discrimination is built from the gap between how you were treated and how others were treated. Courts don't presume discrimination from a bad outcome alone. They look for patterns — and comparators are how those patterns become visible.

The "Similarly Situated" Requirement

Courts require that comparators be "similarly situated in all material respects" to the plaintiff. The standard has been applied differently across circuits, but the core inquiry is consistent: was the comparator subject to the same rules, supervised by the same decision-maker, and engaged in the same or comparable conduct? Title and department aren't always dispositive, but they're starting points. The key word is "material." Courts don't require identical situations — that standard would make comparators impossible to find. They require similarity in the factors that actually drove the employer's decision. If the employer claims the plaintiff was fired for insubordination, the relevant comparators are employees who were also insubordinate, not every employee in the company.

How Employers Attack Comparator Evidence

Employers typically respond to comparator evidence with two moves. First, they argue the comparator isn't similarly situated — different supervisor, different job duties, longer tenure, different history. Second, they argue that even if the comparator was treated differently, there's a legitimate reason that has nothing to do with the plaintiff's protected class. Anticipating these arguments shapes how comparator evidence should be gathered. The goal is to find comparators who match on as many dimensions as possible — same manager, same team, similar job function, similar conduct. The tighter the match, the harder the employer's distinguishing argument becomes. And when multiple comparators show the same pattern, the employer's task gets harder still.

Finding Comparators You Don't Have Direct Knowledge Of

One challenge is that workers often don't know how their employer treated others. Discovery in litigation can surface comparator evidence through disciplinary records, performance review files, and termination data. But before litigation, workers can sometimes identify comparators through coworker conversations, LinkedIn (to see who was hired to replace them and at what level), company announcements, and their own recollection of how policies were applied around them. Documenting this while still employed — names, incidents, dates — is far easier than reconstructing it later.

Statistical Comparators

In cases involving systemic discrimination, statistical evidence about workforce composition, promotion rates, or termination rates by protected class can complement individual comparator evidence. A department where no women have been promoted in five years tells a story that individual comparators reinforce. Statistical evidence is more common in pattern-or-practice cases and class actions but can bolster individual claims when the numbers are stark enough. The strongest discrimination cases use comparator evidence not as a standalone argument but as one layer in a larger structure — combined with timing, decision-maker statements, and inconsistencies in the employer's explanation — to build an inference that no neutral trier of fact can ignore.

Key takeaways

Why Comparators Matter
The "Similarly Situated" Requirement
How Employers Attack Comparator Evidence
Finding Comparators You Don't Have Direct Knowledge Of
Statistical Comparators

Citations

McDonnell Douglas Corp. v. Green, 411 U.S. 792 (1973) — Cited authority
Maniccia v. Brown, 171 F.3d 1364 (11th Cir. 1999) — Cited authority
Coleman v. Donahoe, 667 F.3d 835 (7th Cir. 2012) — Cited authority

Next deep dive

Building a Record While You're Still Employed