Federal equal employment opportunity law identifies a specific set of EEO protected categories that employers cannot use as the basis for job decisions: race, color, national origin, religion, sex (including sexual orientation, gender identity, and pregnancy), age 40 and older, disability, genetic information, military service, and citizenship or immigration status. Equal pay for equal work is protected separately. And retaliation against anyone who reports discrimination or takes part in an investigation is itself a violation, no matter which category the underlying complaint involved. The protections reach every stage of employment, from job postings and interviews through pay, promotions, and termination.
Race, Color, and National Origin
Title VII of the Civil Rights Act of 1964 is the backbone of federal employment discrimination law. It bars employers from making job decisions based on race, color, religion, sex, or national origin.1U.S. Equal Employment Opportunity Commission. Title VII of the Civil Rights Act of 1964
Race and color discrimination covers unfair treatment based on ancestry, physical characteristics, or racial associations. An employer cannot refuse to hire you because of your skin color, and it cannot penalize you for being married to or associated with someone of a different race. Color discrimination can occur between people of the same racial group when an employer treats lighter- or darker-skinned individuals differently.
National origin protection goes beyond the country listed on your passport. It covers ancestry, cultural background, and linguistic characteristics, including speaking with an accent or using a language other than English. An English-only workplace policy that is not genuinely necessary for business operations can violate this protection.
Religion
Employers cannot treat workers differently because of their religious, ethical, or moral beliefs, and they must make reasonable efforts to accommodate sincerely held religious practices. That could mean adjusting a shift schedule around prayer times, permitting religious attire that falls outside a dress code, or allowing schedule swaps for religious holidays.
In 2023 the Supreme Court raised the bar employers must clear to refuse a religious accommodation. Under earlier readings of the law, some courts let employers off the hook by showing anything more than a trivial cost. The Court rejected that approach, holding that an employer must show the accommodation would impose a substantial burden on the business, taking into account the nature, size, and operating cost of the employer.2Supreme Court of the United States. Groff v. DeJoy Minor scheduling inconveniences no longer suffice as a reason to deny a request.
Religious organizations have a narrow exemption of their own. Title VII allows them to prefer members of their own faith when making hiring decisions for any position. Separately, the First Amendment’s ministerial exception gives religious organizations broad discretion over employment decisions involving key religious leaders and teachers, shielding those decisions from anti-discrimination claims entirely.
Sex, Sexual Orientation, and Gender Identity
Title VII’s ban on sex discrimination covers more ground than many people realize. In 2020, the Supreme Court held in Bostock v. Clayton County that firing someone for being gay or transgender is discrimination “because of sex” under Title VII.3LII / Legal Information Institute. Bostock v. Clayton County The reasoning is straightforward: an employer cannot penalize a man for being attracted to men without treating him differently because of his sex. The same logic applies to transgender employees. Sexual harassment, including unwelcome advances and hostile-environment conduct, also falls under sex discrimination.
Pregnancy, Childbirth, and Nursing
Pregnancy-related protections come from three overlapping federal laws, each filling a different gap.
The Pregnancy Discrimination Act of 1978 amended Title VII to make clear that discrimination “because of sex” includes discrimination based on pregnancy, childbirth, or related medical conditions.4U.S. Equal Employment Opportunity Commission. Pregnancy Discrimination Act of 1978 Pregnant employees must be treated the same as other employees who are similar in their ability to work. If an employer offers light-duty assignments to workers with lifting restrictions, it cannot deny the same option to a pregnant employee with an identical restriction.
The Pregnant Workers Fairness Act (PWFA), effective in 2023, goes further and requires employers to provide reasonable accommodations for known limitations related to pregnancy, childbirth, or related conditions. Accommodations might include more frequent breaks, permission to carry a water bottle, schedule adjustments, temporary reassignment to less physically demanding duties, or telework. Employers cannot force a pregnant worker onto leave when a reasonable accommodation would let her keep working, and they cannot deny someone a job because of a pregnancy-related accommodation need.5U.S. Equal Employment Opportunity Commission. What You Should Know About the Pregnant Workers Fairness Act
The PUMP for Nursing Mothers Act requires employers to provide reasonable break time and a private space (not a bathroom) for employees to express breast milk for up to one year after a child’s birth. The space must be shielded from view and free from intrusion by coworkers or the public.6U.S. Department of Labor. FLSA Protections to Pump at Work
Age
The Age Discrimination in Employment Act protects workers 40 and older from being treated worse because of their age.7U.S. Equal Employment Opportunity Commission. Fact Sheet: Age Discrimination It covers hiring, promotions, pay, layoffs, and termination. Employers cannot set age limits for a position unless age is a genuine qualification for the job. Assumptions about older workers being less productive or more expensive are not legitimate reasons for adverse employment decisions.
Disability
The Americans with Disabilities Act protects qualified individuals with disabilities. To be qualified, you need to meet the job’s skill and experience requirements and be able to perform the essential functions of the position, with or without a reasonable accommodation. Accommodations might include modified equipment, adjusted schedules, reassignment to a vacant position, or changes to how a task is performed.
An employer can refuse an accommodation only if it would cause undue hardship, which the ADA defines as significant difficulty or expense measured against factors like the employer’s size, financial resources, and the nature of its operations.8Office of the Law Revision Counsel. 42 USC 12111 – Definitions A large corporation will have a harder time claiming undue hardship than a 20-person company for the same accommodation.
Genetic Information
The Genetic Information Nondiscrimination Act prohibits employers from using genetic test results or family medical history to make employment decisions. Employers cannot request, require, or purchase genetic information about employees or their family members.9U.S. Equal Employment Opportunity Commission. Genetic Information Discrimination GINA exists to prevent employers from acting on a predisposition to a condition that has not developed. A genetic marker suggesting elevated cancer risk cannot be used to deny a promotion or terminate employment.
Equal Pay for Equal Work
The Equal Pay Act prohibits employers from paying men and women different wages for substantially equal work performed under similar conditions when the jobs require equal skill, effort, and responsibility.10Office of the Law Revision Counsel. 29 USC 206 – Minimum Wage Pay differences are justified only through a seniority system, a merit system, a system that measures pay by quantity or quality of production, or another factor genuinely unrelated to sex. Longstanding practice is not a defense.
Two features set the Equal Pay Act apart. It has no minimum employee count and covers virtually all employers subject to federal wage-and-hour rules.11eCFR. 29 CFR Part 1620 – The Equal Pay Act And unlike most other EEO statutes, you do not have to file a charge with the EEOC before suing. You can go directly to federal court within two years of the last discriminatory paycheck, or three years if the violation was willful.12U.S. Equal Employment Opportunity Commission. What You Can Expect After You File a Charge
Military Service
The Uniformed Services Employment and Reemployment Rights Act prohibits employment discrimination based on past, current, or future military service obligations. Protection covers hiring, promotions, benefits, and termination, and it applies to all employers regardless of size.13Office of the Law Revision Counsel. 38 USC 4311 – Discrimination Against Persons Who Serve in the Uniformed Services If military service is a motivating factor in an adverse employment action, the employer has violated the law unless it can prove the same action would have been taken anyway. USERRA is enforced by the Department of Labor, not the EEOC.
Citizenship and Immigration Status
The Immigration and Nationality Act prohibits employers with four or more workers from discriminating based on citizenship or immigration status in hiring and firing decisions.14U.S. Citizenship and Immigration Services. Types of Employment Discrimination Prohibited Under the INA This protection covers U.S. citizens, nationals, recent lawful permanent residents, asylees, and refugees. These claims are handled by the Department of Justice rather than the EEOC.
Retaliation
Retaliation is the single most common basis for EEOC charges, and it protects everyone, not just people in a specific demographic group. All federal EEO laws make it illegal for an employer to punish someone for asserting their rights or helping someone else assert theirs.
Protected activity includes filing or participating as a witness in a discrimination complaint, raising concerns about harassment with a supervisor, refusing to follow orders that would result in discrimination, resisting unwelcome sexual advances, requesting a disability or religious accommodation, and asking coworkers about their pay to uncover potential wage discrimination.15U.S. Equal Employment Opportunity Commission. Facts About Retaliation You do not need to use legal terminology when raising a concern. As long as you reasonably believe something at work violates EEO laws and you communicate that belief, you are protected even if you turn out to be wrong about the underlying discrimination.
Retaliation does not have to mean termination. Demotions, punitive schedule changes, unwarranted negative evaluations, exclusion from meetings, and increased scrutiny all count if they are motivated by your protected activity.
When Harassment Becomes Discrimination
Harassment based on any protected category can violate federal law when it crosses a line from isolated rudeness into something more serious. The legal standard asks whether the conduct was severe or pervasive enough that a reasonable person in the employee’s position would find the work environment hostile or abusive. A single offhand comment usually will not meet that bar. A pattern of slurs, threats, or demeaning conduct can, and a single incident of physical assault or an explicit quid-pro-quo demand almost always does.
Which Employers Are Actually Covered
Not every category applies to every employer, and this is the part that catches many workers off guard. Title VII, the ADA, and GINA cover private employers with 15 or more employees for each working day in at least 20 calendar weeks during the current or prior year.16Office of the Law Revision Counsel. 42 USC 2000e – Definitions The ADEA sets a higher bar at 20 or more employees.7U.S. Equal Employment Opportunity Commission. Fact Sheet: Age Discrimination The Equal Pay Act and USERRA effectively have no size threshold. The INA’s anti-discrimination provisions start at four employees.
All state and local government agencies are covered regardless of size.17U.S. Equal Employment Opportunity Commission. Fact Sheet: Genetic Information Nondiscrimination Act Federal agencies, labor organizations, and employment agencies are also subject to these protections. Many states have their own anti-discrimination laws with lower employee thresholds, so workers at smaller companies may still have legal protections even if a particular federal statute does not apply.
The Narrow BFOQ Exception
Title VII does not treat every protected category the same when it comes to employer defenses. In rare cases, an employer can lawfully require that a worker be a specific sex, religion, or national origin if that characteristic is genuinely necessary to perform the job. This is called a bona fide occupational qualification. A religious school can require that its theology teachers share the school’s faith. A women’s shelter might lawfully hire only female counselors for certain client-facing roles. Courts apply this exception narrowly, and employers that claim a BFOQ bear the burden of proving necessity.18U.S. Equal Employment Opportunity Commission. CM-625 Bona Fide Occupational Qualifications
Race can never be a BFOQ under any circumstances. Customer preference is almost never a valid justification for any BFOQ claim. And assumptions about group characteristics have been consistently rejected by courts and the EEOC.