When Can You Sue Your Employer for Unfair Treatment?

Suing your employer for unfair treatment is only possible when the treatment crosses from unfair into illegal, which generally means it was driven by discrimination based on a protected characteristic, retaliation for exercising a legal right, or a breach of an employment contract. Most workplace mistreatment, however frustrating, does not meet that bar. And for discrimination and retaliation claims, you cannot go straight to court. Federal law requires you to first file a charge with the Equal Employment Opportunity Commission, and the filing window is short.

When Unfair Treatment Becomes Illegal

Most jobs in the United States are “at-will.” Your employer can fire you, demote you, cut your hours, or reassign you for almost any reason, or no reason at all. A personality clash with your boss, favoritism toward a coworker, or a manager’s mistaken belief about your performance may feel deeply unjust, but on their own, none of these violate the law.

The treatment becomes illegal when the employer’s real motivation involves a protected characteristic or punishes you for exercising a legal right. Passed over for a promotion because of your race? Fired shortly after reporting sexual harassment? Those are no longer management prerogatives. The legal question is never “was this fair?” It is “was this motivated by something the law specifically prohibits?”

What Federal Law Protects

Several federal statutes define which characteristics are protected and which employers are covered. The size thresholds matter. If your employer is too small, the federal law simply does not apply, though a state law might.

Title VII of the Civil Rights Act prohibits discrimination based on race, color, religion, sex, and national origin. It covers employers with 15 or more employees.¹
The Age Discrimination in Employment Act (ADEA) protects workers 40 and older. It covers employers with 20 or more employees.²
The Americans with Disabilities Act (ADA) prohibits discrimination against qualified individuals with disabilities and requires reasonable accommodations. It covers employers with 15 or more employees.³
The Pregnant Workers Fairness Act (PWFA) requires reasonable accommodations for pregnancy and childbirth-related limitations, and prohibits forcing an employee to take leave when another accommodation is available. It covers employers with 15 or more employees.⁴
The Genetic Information Nondiscrimination Act (GINA) bars employers from using genetic information or family medical history in employment decisions. It covers employers with 15 or more employees.⁵

The employee count is based on having the required number of employees for at least 20 calendar weeks in the current or preceding year.⁶ If your employer falls below the threshold, your state law may still cover you.

Discrimination, Harassment, and Retaliation

Discrimination means employment decisions driven by a protected characteristic rather than performance or business needs: hiring, firing, pay, promotions, assignments, benefits. The employer does not have to announce the discriminatory motive. It can be inferred from a pattern, like employees of one race consistently receiving smaller raises despite comparable reviews.

Harassment has to clear a higher bar than most people realize. Not every offensive remark counts. The conduct must be based on a protected characteristic, and it must be severe enough or happen frequently enough to create a work environment that a reasonable person would find hostile or abusive. The Supreme Court set this test in Harris v. Forklift Systems, Inc.: the behavior must be objectively offensive and the employee must also subjectively perceive it as abusive.⁷ A single crude joke usually falls short. Repeated slurs that interfere with your ability to work almost certainly qualify.

Retaliation is the most commonly filed charge with the EEOC, and it catches people off guard. It can be actionable even if the underlying complaint turns out to be unfounded. If you reported harassment, participated as a witness, or requested a disability accommodation, your employer cannot punish you for doing so. Punishment need not be as dramatic as firing. Reassigning you to a worse shift, suddenly issuing negative reviews after years of good ones, or excluding you from meetings you previously attended can all qualify if the timing points to a connection with your protected activity.

Contracts and Union Agreements Are a Different Path

If you have a written employment contract specifying that you can only be terminated for certain reasons, firing you outside those terms is a breach of contract. That lawsuit goes through regular civil court, not the EEOC.

Union members typically have stronger protections. Most collective bargaining agreements include a “just cause” standard, requiring a legitimate reason for discipline and progressive discipline steps. Even where the phrase is absent, arbitrators generally apply that standard. If your employer violates the agreement, the remedy usually starts with a union grievance rather than a lawsuit.

If You Quit: Constructive Discharge

Quitting does not automatically end your legal options. Under a theory called constructive discharge, you may still have a claim if working conditions became so intolerable that a reasonable person would have felt compelled to resign, and those conditions were caused by discrimination or retaliation.⁸ General unhappiness or a difficult boss will not clear the bar.

The timing detail matters. The Supreme Court held in Green v. Brennan that your filing deadline runs from the date you resign, not from the last discriminatory act before you quit.⁸ If you are considering resigning, document the discriminatory conditions in your resignation letter rather than writing a vague “moving on” note. That letter becomes evidence.

Build Your Evidence Before You File

The strength of your claim depends almost entirely on documentation. Memories fade and witnesses move on. Start collecting while events are fresh and before you lose access to company systems.

Keep an incident journal with dates, times, locations, what was said or done, and who was present. Direct quotes carry far more weight than summaries.
Save emails, texts, and chat logs showing discriminatory comments or a retaliatory pattern. Screenshot anything on company systems you may lose access to.
Gather performance reviews, pay stubs, promotion or demotion letters, and disciplinary notices. A record of positive reviews that suddenly turns negative right after you complained is powerful evidence of retaliation.
Keep a copy of the employee handbook. Showing that your employer violated its own procedures undercuts whatever neutral justification it offers later.
Write down personal contact details for witnesses. Do not rely on company directories.

One caution: employers can generally monitor and access anything on company email and company-owned devices. Forwarding company documents to a personal account may violate company policy and could be used against you. Talk to an attorney before transferring company files.

Filing a Charge With the EEOC

You cannot walk into federal court on day one. Federal law requires you to first file a formal Charge of Discrimination with the EEOC or your state’s equivalent Fair Employment Practices Agency. If you file with one, the charge is automatically cross-filed with the other.⁹

Deadlines That Cannot Be Extended

You must file within 180 calendar days of the discriminatory act. That extends to 300 days if a state or local agency enforces a law covering the same type of discrimination.¹⁰ Because most states have their own anti-discrimination agencies, the 300-day deadline applies to the majority of workers. Treat the shorter deadline as your target anyway. Missing it permanently forfeits the claim.

How to File and What Happens Next

You begin through the EEOC Public Portal with an online inquiry, then schedule an intake interview. You can also file by mail or in person. If you have 60 days or fewer before your deadline, the portal offers expedited instructions.⁹

Once filed, the EEOC notifies your employer within 10 days.¹¹ The agency may offer both sides free, voluntary mediation. Mediation is confidential, and nothing said there can be used later if it does not resolve the dispute.¹² If either side declines or mediation fails, the charge moves to an investigator. The investigation can take months. You should generally allow at least 180 days, though in some cases the EEOC will issue an early right-to-sue notice if you ask in writing.¹³

Getting the Right to Sue

The investigation ends in one of two ways. If the EEOC cannot find reasonable cause, it dismisses the charge and sends a Dismissal and Notice of Rights. You then have 90 days to file in federal court.¹¹ A dismissal does not mean a weak case. The EEOC dismisses many charges simply because it lacks resources to investigate fully. Plenty of successful lawsuits follow EEOC dismissals.

If the EEOC does find reasonable cause, it first tries to resolve the matter through conciliation. When that fails, the agency can either file suit on your behalf (rare) or issue a Notice of Right to Sue so you can file on your own. Once you receive the right-to-sue notice, the 90-day clock is firm.¹¹

What You Can Recover

Back pay covers the wages and benefits you lost between the discriminatory act and the resolution of your case, including salary, raises, and employer contributions to benefits. Interest accrues on it. Any interim earnings from other work are deducted.¹⁴ Front pay compensates for future lost earnings when returning to your old job is not realistic. Neither back pay nor front pay is capped.

Compensatory damages cover emotional distress and other non-wage losses. Punitive damages are available when the employer acted with malice or reckless disregard for your rights. Federal law caps the combined total of compensatory and punitive damages by employer size:¹⁵

15 to 100 employees: $50,000
101 to 200 employees: $100,000
201 to 500 employees: $200,000
More than 500 employees: $300,000

These caps apply to Title VII, ADA, and GINA claims. Age discrimination cases under the ADEA work differently: compensatory and punitive damages are not available, but if the violation was willful, the court can award liquidated damages equal to the back pay, effectively doubling it.¹⁴

Federal employment discrimination statutes include fee-shifting. A court can order your employer to pay your attorney’s fees if you win.¹⁶ In practice, winning employees routinely recover fees, while losing employees are only ordered to pay the employer’s fees if the suit was frivolous. Courts can also order reinstatement to your former position, with seniority and benefits restored.

State Law May Give You More

Federal law sets a floor, not a ceiling. Many states cover smaller employers, protect additional characteristics like marital status or sexual orientation that a particular federal statute may not reach, or give you significantly longer filing deadlines. Several states allow two, three, or even five years compared to the federal 180 or 300 days. Some states also have no caps on compensatory or punitive damages, which can make a state-law claim more valuable than a federal one for the same conduct.

If your employer is too small for federal law or the mistreatment involves a characteristic federal law does not cover, check with your state’s civil rights enforcement agency. Filing with a state agency can also satisfy the federal requirement at the same time, because charges are automatically cross-filed in states that have worksharing agreements with the EEOC.¹⁷

1
U.S. Equal Employment Opportunity Commission. Title VII of the Civil Rights Act of 1964
2
U.S. Equal Employment Opportunity Commission. Age Discrimination in Employment Act of 1967
3
U.S. Equal Employment Opportunity Commission. Small Employers and Reasonable Accommodation
4
U.S. Equal Employment Opportunity Commission. Pregnant Workers Fairness Act
5
U.S. Equal Employment Opportunity Commission. Genetic Information Nondiscrimination Act of 2008
6
Office of the Law Revision Counsel. 42 USC 2000e – Definitions
7
Legal Information Institute. Harris v. Forklift Systems, Inc.
8
Justia U.S. Supreme Court Center. Green v. Brennan, 578 U.S. 547 (2016)
9
U.S. Equal Employment Opportunity Commission. Filing a Charge of Discrimination
10
U.S. Equal Employment Opportunity Commission. Time Limits for Filing a Charge
11
U.S. Equal Employment Opportunity Commission. What You Can Expect After a Charge is Filed
12
U.S. Equal Employment Opportunity Commission. Questions and Answers About Mediation
13
U.S. Equal Employment Opportunity Commission. After You Have Filed a Charge
14
U.S. Equal Employment Opportunity Commission. Remedies for Employment Discrimination
15
Office of the Law Revision Counsel. 42 USC 1981a – Damages in Cases of Intentional Discrimination in Employment
16
Office of the Law Revision Counsel. 42 USC 2000e-5 – Enforcement Provisions
17
U.S. Equal Employment Opportunity Commission. How to File a Charge of Employment Discrimination