Every worker in California has the right to be judged on their abilities — not their sex, gender, or pregnancy status. Yet sex discrimination remains one of the most frequently reported workplace violations in the state. It shows up in salary decisions, promotions, terminations, and daily job conditions. And unlike many people assume, it doesn't have to be obvious to be illegal.

California's Fair Employment and Housing Act (FEHA), codified at Government Code § 12940, is one of the strongest workplace anti-discrimination laws in the country. If you suspect your employer has treated you unfairly because of your sex or gender, understanding exactly what FEHA prohibits — and how courts measure proof — could change everything.

What Does "Sex Discrimination" Mean Under FEHA?

Government Code § 12940(a) makes it an unlawful employment practice for an employer — because of a person's sex, gender, gender identity, or gender expression — to refuse to hire, discharge, or discriminate against any person in compensation or in terms, conditions, or privileges of employment. But FEHA's definition of "sex" is broader than many people realize.

Under FEHA, it is an unlawful employment practice for an employer to discriminate based on your sex or gender, and this also encompasses discriminating based on pregnancy or medical conditions related to pregnancy, childbirth or medical conditions related to childbirth, and breastfeeding or medical conditions related to breastfeeding.^[1] In short, if any of these conditions motivated an adverse employment decision, your employer may have broken the law.

Under California law, gender discrimination occurs when someone is treated unfairly due to their gender, including gender identity or expression. Sex discrimination encompasses adverse treatment based on sex, which includes conditions like pregnancy and childbirth. Discrimination doesn't have to be blatant to violate the law; subtle biases and ingrained systems of inequality are also actionable.^[2]

Common Forms of Sex Discrimination

Sex discrimination rarely arrives with a sign on it. It hides inside performance reviews, restructuring decisions, and off-hand remarks. Some of the most common forms include:

Unequal Pay. One of the most common forms of gender discrimination is the gender wage gap. When two people are paid different wages for the same or similar job, and one is earning less because of their gender, this is unlawful gender discrimination. A stark example: Disney reached a $43.3 million settlement in 2024 to address claims that the company had underpaid female middle managers for ten years.^[3]

Denial of Promotion. Refusing to promote a qualified employee because she is pregnant, planning to have children, or simply because of gender-based assumptions about leadership is textbook sex discrimination under FEHA.

Pregnancy-Related Discrimination. It is illegal for employers to fire, refuse to hire, bar, harass, discharge, or otherwise discriminate against someone because of pregnancy, childbirth, or a related condition. This prohibition covers the full arc — from interview to accommodation to leave and return.^[4]

Hostile Work Environment. Under Section 12940(j), it is unlawful for an employer or any individual to harass an employee, an applicant, an unpaid intern or volunteer, or a person providing services pursuant to a contract because of sex, gender, gender identity, or gender expression.^[5]

Gender Stereotyping. Penalizing an employee for not conforming to gender norms — such as penalizing a woman for being "too assertive" or a man for taking parental leave — is also actionable discrimination under FEHA.

Who Is Protected — and Who Must Comply?

The FEHA applies to public and private employers, labor organizations, apprentice training programs, employment agencies, and licensing boards. Employers of five or more employees are subject to FEHA's prohibition against employment discrimination. Harassment is prohibited in all workplaces, even those with only one employee or independent contractor on staff.^[4]

It is also unlawful for employers to discriminate against a person based on the perception that an employee is a member of a protected class, even if the employee is not, and to discriminate against a person based on that person's association with a person who is or is perceived to be a member of a protected class.^[6] This means your employer cannot penalize you simply because you are associated with someone who belongs to a protected group.

What Evidence Can You Use?

FEHA courts are more flexible, allowing plaintiffs to prove discrimination through context and circumstantial evidence without strict comparator requirements.^[7] You do not need a smoking-gun memo to build a case. Useful evidence includes:

Pay records comparing your salary to similarly situated employees of a different sex; emails or messages reflecting gender-based assumptions or biases; a pattern of promoting men over women despite comparable qualifications; sudden negative performance reviews after disclosing a pregnancy; or witness testimony from colleagues who observed discriminatory treatment.

An employee need only offer sufficient circumstantial evidence to give rise to a reasonable inference of discrimination. Once this much has been established, the burden of proof shifts to the employer to provide a legitimate non-discriminatory reason for the adverse employment action.^[8]

Filing a Claim: Deadlines You Cannot Miss

Before you can file a civil lawsuit under FEHA, you must first file an administrative complaint with California's Civil Rights Department (CRD). Employees facing workplace discrimination can file claims with California's Department of Fair Employment and Housing within a year of the incident. The process involves detailed documentation and may lead to mediation or legal action.^[2] However, following SB 807, signed in 2021, FEHA complainants generally have three years from the date of the unlawful act to file with the CRD — giving California employees significantly more time than the federal one-year window.

After the CRD issues a right-to-sue notice, you typically have one year to file in civil court. Missing either deadline can permanently bar your claim, regardless of its merit. Act quickly, document everything, and consult an employment attorney as soon as possible.

The Bottom Line

Sex discrimination under FEHA is broad, powerful, and actionable — and you don't have to prove a malicious intent to win. If your employer treated you differently because of your sex, gender, pregnancy, or any related characteristic, California law is firmly on your side. The challenge is knowing how to document it, file it, and fight for it.

At Smith Reback Law, we represent California employees who have suffered sex and gender discrimination in all its forms — from unequal pay to wrongful termination, from pregnancy bias to hostile work environments. We know how to build the evidence, navigate the CRD process, and take employers to court. Your consultation is completely confidential, and we are ready to help.