Something happened at work. Maybe you were passed over for a promotion that went to a less-qualified colleague after you disclosed your diagnosis. Maybe your accommodation request was denied with no explanation. Maybe you were let go within weeks of raising a disability-related concern. You suspect discrimination, and you want to do something about it, but you don't know where to start, and you're not sure what "filing a complaint" actually involves.

The Equal Employment Opportunity Commission handles discrimination complaints for private employers with 15 or more employees. Filing a charge with the EEOC is the required first step before you can pursue most ADA-related claims in court. This guide walks through the process from start to finish.

Step 1: Know the Deadline

This is the number to write down first. You have either 180 or 300 days from the date the discriminatory act occurred to file an EEOC charge, depending on where you live. If you're reading this and doing the math, do it now, before anything else.

In states and localities that have their own anti-discrimination laws and enforcement agencies, the deadline extends to 300 days. Most states with employment law infrastructure qualify. If you're unsure whether your state does, the EEOC's website has a complete list.

The date that matters is when the act happened, not when you realized it was discriminatory. Missed deadlines are the most common reason valid claims are dismissed before they're ever heard, and that outcome is entirely preventable.

Step 2: Gather Your Evidence

Before filing, collect what you have. Gathering evidence while you're still in the workplace, still unsure about the outcome, is genuinely difficult. But you don't need a complete case file to begin. Start with what you can document now; more can be added as the process unfolds.

Direct evidence of discrimination, such as a manager's statement that your disability influenced a decision, is rare. Most cases rely on circumstantial evidence, which is a legitimate and accepted basis for a charge.

Useful evidence includes:

• Emails, texts, or written communications related to the discriminatory act
• Records of your accommodation request and any responses
• Documentation of your performance history, including reviews, ratings, and awards
• Notes about verbal conversations, including dates, who was present, and what was said
• Evidence of how similarly situated employees without disabilities were treated
• Any witness who observed the discriminatory act or its effects

Create a timeline. Put the dates in order and attach supporting documents where you have them. Additional information can be submitted during the investigation. What matters at the filing stage is accuracy, not completeness.

Step 3: Submit the Charge

You can file an EEOC charge online through the EEOC Public Portal, by mail, or in person at an EEOC field office. The online portal walks you through an intake questionnaire that helps determine whether the EEOC has jurisdiction over your situation.

When submitting, include:

• Your contact information and your employer's information
• The dates of the discriminatory acts
• A clear description of what happened and why you believe it was disability-related
• The remedies you're seeking, such as reinstatement, back pay, or policy changes

Be factual and specific. The EEOC investigates what you allege, so an accurate account of what happened is more useful than framing designed to sound compelling.

After submission, the EEOC assigns your charge a number and notifies your employer. The employer has the opportunity to respond.

Step 4: Understand the Investigation Timeline

EEOC investigations take time, often longer than most people expect. The average resolution has ranged from 9 to 18 months depending on caseload and year. That wait can be hard, especially when you're still at work or recently lost a job. Knowing this going in means you won't mistake silence for inaction.

During the investigation, the EEOC may request additional documents from you, interview witnesses, or attempt a settlement process called conciliation. Updates come at significant milestones, not on a rolling basis. If months pass without contact, that's normal.

If the EEOC determines there is reasonable cause to believe discrimination occurred, they will attempt to reach a resolution with your employer. If that fails, they may file a lawsuit on your behalf, or they issue a right-to-sue letter allowing you to pursue the claim in federal court independently.

If the EEOC does not find sufficient evidence or closes the case, they issue a dismissal and notice of rights, which also gives you 90 days to sue in federal court if you choose.

Step 5: Protect Yourself from Retaliation

Filing an EEOC charge is protected activity. Your employer cannot legally take adverse action against you, including demotion, termination, reduction in hours, or changes in working conditions, because you filed. Retaliation is separately prohibited under the ADA and Title VII, and it's among the most commonly filed claims at the EEOC.

If something changes at work after you file, document it with dates and specifics. That documentation can support an additional retaliation charge if needed.

Getting Help Along the Way

Filing a charge doesn't require an attorney. Many people do it successfully on their own. That said, if your situation is complex, an employment attorney who handles ADA cases can help you frame the charge effectively. Many offer free initial consultations.

Disability Rights Advocates and the National Disability Rights Network offer free legal resources for workers with disabilities navigating discrimination claims.

Filing isn't a guarantee of an outcome. But it is the mechanism that puts your experience on record and opens the door to remedies that informal complaints cannot reach. For many workers, having their account formally documented and reviewed is the step they needed to take. The process is more navigable than it first appears.