You requested a standing desk in March. In April, your manager wrote you up for performance issues that never existed before. Your employer will say those two events are unrelated. The timeline between them is what makes that claim hard to defend.

When workers face retaliation after requesting accommodations or reporting discrimination, the gap between the protected activity and the adverse action carries legal weight. Courts recognize patterns. An employer who fires someone three days after they file an EEOC complaint has a harder case to make than one who waits nine months. That timing is called temporal proximity, and it's one of the strongest pieces of circumstantial evidence in retaliation claims.

Here's what counts as protected activity, what qualifies as adverse action, why timing matters, and how to document your case while events are still unfolding.

What Counts as Protected Activity

Protected activity is any action you take to oppose discrimination or participate in an investigation. Under the ADA, that includes requesting a reasonable accommodation, filing an internal complaint, participating in an EEOC investigation, or supporting a coworker's discrimination claim.

You're protected whether your complaint is formally filed or mentioned in an email. You're protected if you're wrong about the law, as long as you reasonably believed the conduct you opposed was discriminatory. You're also protected if you participate in someone else's case, testifying as a witness or providing a written statement.

Protected activity does not require you to use specific legal language. Telling HR "I need a modified schedule because of my disability" is protected. So is "I think you're treating me differently because I'm deaf." The law protects workers who oppose discrimination, not just workers who use the term "ADA."

What Qualifies as Adverse Action

Adverse action is any employer conduct that would deter a reasonable person from engaging in protected activity. Termination, demotion, pay cuts, and disciplinary write-ups all qualify. So do schedule changes that eliminate flexibility you previously had, reassignment to less desirable duties, or exclusion from meetings and projects you were part of before.

The standard is not whether the action causes severe harm. It's whether the action would discourage a reasonable worker from requesting accommodations or filing complaints in the future. A written warning that goes in your file qualifies, even if it doesn't result in immediate consequences. A performance improvement plan that starts after years of strong reviews qualifies. A shift change that makes your commute unmanageable qualifies.

Some courts have found that increased scrutiny, verbal reprimands, or refusal to provide references can constitute adverse action depending on context. The test is impact: does this change make it harder for you to do your job, advance in your career, or exercise your rights without fear?

Why Temporal Proximity Matters in Legal Proceedings

Temporal proximity is the time gap between your protected activity and your employer's adverse action. When that gap is short, it supports an inference of retaliation. Courts have found periods as short as two days or as long as several months sufficient, depending on other evidence. There's no bright-line rule, but the closer in time the two events are, the stronger your circumstantial case.

If you're fired three days after requesting an accommodation, a court is more likely to infer retaliation than if you're fired eight months later with no other suspicious conduct in between. The inference weakens as time passes, but it doesn't disappear. A six-month gap can still support a retaliation claim if other evidence shows the employer's stated reason is pretextual.

Temporal proximity works both ways. If your employer has a pattern of adverse actions following protected activity, even small gaps reinforce the pattern. If this is your first complaint and your termination happens nine months later, you'll need additional evidence: inconsistent explanations, sudden policy changes, or documented hostility to strengthen your claim.

The weight courts give to timing depends on the totality of circumstances. Close temporal proximity is rarely enough on its own to prove retaliation, but it's often the first piece of evidence that shifts the burden to your employer to provide a legitimate, non-retaliatory reason for their action.

How to Document and Preserve Evidence of Retaliation as It Unfolds

Start documenting the moment you engage in protected activity. Note the date, the person you spoke to, the method of communication, and what you said. If you requested an accommodation via email, save it. If you made a verbal request, follow up in writing: "This confirms our conversation on [date] in which I requested [specific accommodation]."

Track every interaction with your supervisor, HR, and coworkers after your request. Write down dates, times, names, and what was said. If your manager gives you a critical performance review two weeks after your accommodation request, document when your last review occurred, what it said, and how this one differs. If you're suddenly excluded from meetings, note which meetings, who else attended, and whether your role in those meetings was part of your job duties before.

Save all written communications. Print emails if you're concerned about losing access to your work account. Keep performance reviews, schedules, project assignments, and any written warnings or disciplinary notices. If your employer provides a reason for an adverse action, document it verbatim. If that reason changes later, the inconsistency matters.

Identify potential witnesses. If a coworker saw your manager's reaction to your accommodation request, note their name. If someone else was present when you were reprimanded, write it down. You may not need witness testimony immediately, but knowing who was there is critical if the case escalates.

If your employer takes adverse action, respond in writing and keep a copy. If you're written up for performance issues, reply with a factual rebuttal referencing your prior reviews and the timing of the write-up. You're creating a record that shows you contested the action at the time it occurred, not months later when your claim is filed.

File an EEOC charge within 180 days of the adverse action, or 300 days if you're in a state with a fair employment practices agency. Missing this deadline can bar your claim entirely. If you're unsure whether your situation qualifies as retaliation, file anyway. The EEOC will assess your charge, and you preserve your legal options.

What Happens When the Employer Claims the Action Was Unrelated

Your employer will almost always argue that the adverse action was based on legitimate, non-discriminatory reasons: poor performance, restructuring, budget cuts, policy violations. Your retaliation claim doesn't require proving that those reasons are false. It requires showing that the stated reason is pretextual, a cover for retaliation.

Temporal proximity is one factor that raises the inference of pretext. If you've worked there for five years with no performance issues and you're suddenly written up two weeks after requesting leave under the ADA, the timing alone invites scrutiny. If your employer's explanation shifts over time, that inconsistency supports your claim. If similarly situated employees who didn't engage in protected activity were treated more favorably, that disparity matters.

Document your performance history. If your employer claims you were terminated for poor performance, your previous positive reviews become evidence. If they claim you violated a policy, the question is whether that policy was enforced consistently. If coworkers violated the same policy without consequence, your termination looks retaliatory.

Courts evaluate the employer's explanation for credibility. The explanation doesn't have to be airtight, but it has to be believable. If the timeline, the inconsistencies, and the disparate treatment all point in the same direction, the employer's burden is harder to meet.

The case you're building starts before you know you'll need it. Every date you write down, every email you save, every inconsistency you note in writing becomes part of the record that either supports your claim or leaves gaps your employer will use against you.

You asked for an accommodation. Something changed after you did. The documentation you keep in the weeks and months that follow is what turns that sequence into evidence. Courts see the pattern when the paper trail shows it, and you are the only person with access to your own timeline before it matters in a proceeding.

If you've already experienced adverse action, consult an employment attorney who handles disability retaliation cases. Many work on contingency and offer free initial consultations. The EEOC's website includes resources for workers considering a charge, including information on the 180-day filing deadline and how to find local assistance.