What Is the "Substantial Motivating Factor" Standard and Why It Matters in California Discrimination Cases

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Updated March 2026 to reflect current FEHA causation standards following Harris v. City of Santa Monica, California Supreme Court precedent on the substantial motivating factor test, and its application across discrimination, harassment, and retaliation claims.

The single most important legal standard in California employment discrimination law is one that most employees have never heard of.

The substantial motivating factor test determines whether a protected characteristic — race, disability, pregnancy, age, religion, national origin — played enough of a role in an employment decision to make the employer legally liable.

It is the bridge between what happened to you and whether the law can do something about it. California's version of this standard is significantly more favorable to employees than the federal standard used in other states.

Understanding why — and what it means for the strength of your potential claim — is essential context for anyone who has experienced workplace discrimination in California.

The Standard Defined — What "Substantial Motivating Factor" Actually Means

The substantial motivating factor test was established by the California Supreme Court in Harris v. City of Santa Monica, 56 Cal.4th 203 (2013). The Court held that under FEHA, a plaintiff must show that a protected characteristic or protected activity was a substantial motivating factor in the employer's adverse employment decision.

The Court was deliberate in its word choice. "Substantial" means the factor must be more than a remote or trivial consideration — it must have actually contributed to the decision in a real and meaningful way.

"Motivating factor" means the protected characteristic or activity must have played a role in the employer's reasoning — it must have influenced the decision, not merely been present in the background.

What the test does not require is that the protected characteristic was the only reason, the primary reason, the dominant reason, or even the main reason for the adverse action.

An employer who had multiple reasons for a termination — some legitimate, some discriminatory — is still liable under FEHA if the discriminatory reason was substantial.

This is the standard that governs every discrimination, harassment, and retaliation claim brought under FEHA in California.

How It Differs From the Federal Standard

To appreciate why California's substantial motivating factor standard matters, it helps to understand what employees face in federal court under Title VII of the Civil Rights Act.

The U.S. Supreme Court in University of Texas Southwestern Medical Center v. Nassar, 570 U.S. 338 (2013), held that retaliation claims under Title VII require "but-for" causation — the employee must prove that the retaliation would not have occurred but for the protected activity. In plain terms, the employee must show the protected activity was the determining factor in the adverse action.

For discrimination claims under Title VII, the standard is somewhat more favorable — a motivating factor standard applies — but even there, a successful same-decision defense can limit remedies to declaratory relief and attorney's fees, eliminating lost wages recovery entirely.

Standard	Jurisdiction	What Employee Must Prove	Employer's Defense
Substantial motivating factor	California FEHA	Protected characteristic/activity was a real, meaningful factor	Same-decision defense limits but does not eliminate remedies
Motivating factor	Federal Title VII (discrimination)	Protected characteristic was a motivating factor	Same-decision defense can eliminate lost wages recovery
But-for causation	Federal Title VII (retaliation)	Protected activity was the determining factor	Any legitimate reason breaks causation
But-for causation	Federal ADEA (age discrimination)	Age was the determining factor	Any legitimate reason breaks causation

The practical consequence of this comparison is significant. A California employee who can show that discrimination or retaliation played a real and meaningful role in their termination has a viable FEHA claim — even if the employer had legitimate performance concerns at the same time.

A federal employee facing the same facts might not survive summary judgment under the stricter but-for standard.

What "Substantial" Actually Requires in Practice

The substantial motivating factor standard has a floor — the protected characteristic must be more than a trivial or remote consideration. Not every workplace interaction that involves a protected characteristic rises to the level of a substantial motivating factor in an employment decision.

California courts have provided guidance on where the line falls through a body of case law that identifies factors relevant to the substantiality analysis.

Proximity in time. When an adverse action occurs closely in time after a protected event — a disability disclosure, a discrimination complaint, a leave request — that proximity is evidence that the protected event substantially motivated the decision. The shorter the interval, the stronger the inference. Courts have found proximity of days or weeks to be highly significant.

Direct statements by decision-makers. A supervisor who expressed frustration about an employee's disability, skepticism about a pregnancy's impact on performance, or irritation about a discrimination complaint has potentially provided direct evidence that the protected characteristic substantially motivated a subsequent adverse action. Direct statements are relatively rare — but when they exist, they are powerful.

Inconsistency in the employer's stated reason. An employer whose stated reason for an adverse action changes over time — different explanations at the time of termination, during EDD proceedings, and in CRD responses — is demonstrating that no reason is the real one.

Inconsistency suggests that the stated reasons are pretextual and that the actual motivation is something the employer is concealing — typically the protected characteristic.

Comparative treatment. When similarly situated employees who do not share the protected characteristic are treated more favorably — retained despite similar performance issues, promoted despite comparable qualifications, given accommodations that are denied to the employee with the protected characteristic — the differential treatment is evidence that the protected characteristic substantially motivated the decision.

The overall workplace context. A workplace with documented discrimination, prior complaints, a pattern of adverse action against members of a particular protected class, or institutional culture that reflects bias provides context that strengthens individual claims.

The CRD v. Tesla racial discrimination findings, for example, provide context that strengthens individual claims by Fremont employees — the institutional pattern makes the substantial motivating factor inference more plausible.

The Same-Decision Defense — What It Limits, Not Eliminates

Harris v. City of Santa Monica established the substantial motivating factor standard, but it also recognized an employer defense — the "same-decision" defense — that can limit an employee's remedies even when discriminatory motivation is established.

If an employer demonstrates that it would have made the same adverse decision even without the discriminatory motivation — that the legitimate reasons were independently sufficient — the employee cannot recover lost wages or reinstatement.

However, the employee can still recover declaratory relief, injunctive relief, and attorney's fees.

The same-decision defense does not eliminate liability. It limits remedies. And it requires the employer to prove — with convincing evidence — that the legitimate reasons were truly independent and sufficient.

An employer who cannot produce contemporaneous documentation of the performance concerns, restructuring rationale, or other legitimate factors faces a difficult defense.

Several situations make the same-decision defense particularly difficult for employers to sustain.

When performance documentation emerged only after a protected event — when coaching notices, performance improvement plans, or negative evaluations appeared for the first time after a disability disclosure or discrimination complaint — the documentation is circumstantially connected to the protected event rather than independent of it.

Our article on what evidence you need to prove wrongful termination in California explains how courts evaluate the timing and authenticity of performance documentation in discrimination cases.

When comparator employees with similar or worse performance were not subjected to the same adverse action, the legitimate reason loses its neutrality. An employer who claims performance justified a termination but retained non-protected employees with comparable performance has undermined the same-decision defense.

When the employer's decision-making process did not include any consideration of available alternatives — accommodation, reassignment, progressive discipline — before proceeding to the most severe adverse action, courts are skeptical that the decision was truly independent of the discriminatory motivation.

How the Standard Applies Across Different Types of Claims

The substantial motivating factor standard operates across the full range of FEHA claims — not just termination cases. Understanding how it applies in different contexts helps employees recognize when their situation meets the legal threshold.

Discrimination in hiring. A job applicant who was not selected for a position can bring a FEHA claim if they can show that a protected characteristic substantially motivated the hiring decision.

They do not need to prove the employer explicitly excluded them because of their race or disability — only that the characteristic played a real and meaningful role in the decision. Comparative evidence — other applicants selected, interview feedback, hiring patterns across protected classes — is central to these cases.

Discriminatory denial of promotion. An employee passed over for promotion can establish the substantial motivating factor by showing the protected characteristic influenced the promotion decision meaningfully.

Statements by the decision-maker, comparative qualifications analysis, and the timing of the denial relative to any protected event are all relevant.

Harassment and hostile work environment. The substantial motivating factor standard applies to whether discriminatory animus substantially motivated the harassing conduct.

In hostile work environment cases, courts evaluate whether the harassing conduct was sufficiently connected to the plaintiff's protected characteristic to establish that the characteristic substantially motivated the harassment.

Retaliation. When an employee engages in protected activity — filing a discrimination complaint, requesting accommodation, taking medical leave, filing a wage claim — and adverse action follows, the substantial motivating factor analysis asks whether the protected activity substantially motivated the adverse action.

The retaliation framework under FEHA § 12940(h) uses the same substantial motivating factor causation standard established in Harris.

Mixed-motive cases. As discussed in our article on mixed-motive termination in California, the substantial motivating factor standard is specifically designed for cases where both legitimate and illegitimate reasons existed simultaneously.

The standard allows recovery where the illegitimate reason was substantial — even if the legitimate reason was also present and sufficient on its own.

Why the Standard Makes California Cases More Viable

The practical effect of California's substantial motivating factor standard — compared to the federal but-for standard — is that more cases survive the early stages of litigation and reach the jury.

Under the but-for standard, an employer who can point to any legitimate reason for an adverse action — even one that was mixed with discriminatory motivation — can sometimes obtain dismissal on summary judgment. The employee must show that the entire termination would not have happened but for the discrimination.

Under the substantial motivating factor standard, the employee needs only to show that discrimination played a real and meaningful role. An employer with legitimate performance concerns who also harbored discriminatory motivation cannot simply point to the performance concerns and escape liability.

The jury evaluates whether the discrimination was substantial — and California juries, instructed under the FEHA standard, regularly find that it was.

This difference in outcomes is not trivial. It means that employees who experienced discrimination in a mixed-motive context — the most common situation in actual workplaces — have meaningful access to the legal system under California law that they might not have under federal law.

Real Cases — Substantial Motivating Factor in Action

1. Disability discrimination, Los Angeles retail employer A retail manager with multiple sclerosis disclosed her diagnosis to her regional manager when requesting a modified schedule. Three months later, she was not selected for a district manager role — a role she had been informally told she was being groomed for. The employer cited a "stronger candidate."

The FEHA disability discrimination claim applied the substantial motivating factor standard. The candidate selected had less tenure and comparable performance metrics.

The regional manager's documented reaction to the MS disclosure — expressing concern about "reliability" — was direct evidence that the disability substantially motivated the promotion decision. The employer's same-decision defense failed because the comparative evidence did not support the "stronger candidate" justification.

2. Age discrimination, Bay Area financial services A 58-year-old senior analyst was passed over for a team lead role that went to a 34-year-old colleague with fewer years at the company.

A hiring manager's comment — that the company needed someone who could "grow into the role for the next decade" — was treated as direct evidence that age substantially motivated the decision.

The substantial motivating factor standard did not require the employee to prove age was the only reason — only that it played a real and meaningful role. The same-decision defense was not credible given the comment and the comparative qualifications.

3. Retaliation after OSHA complaint, Central Valley manufacturing A production worker filed a Cal/OSHA complaint about safety conditions on his line. Six weeks later, he was placed on a performance improvement plan — his first in four years of employment. He was terminated when he did not meet the PIP targets.

The FEHA retaliation claim applied the substantial motivating factor standard to the question of whether the OSHA complaint substantially motivated the PIP and termination.

The four-year clean record, the six-week proximity, and the absence of any pre-complaint documentation of the performance concerns cited in the PIP all supported the inference that the complaint substantially motivated the adverse actions.

4. National origin discrimination, San Diego healthcare A Filipino nurse with an accent was passed over for a charge nurse role — a supervisory position she was qualified for based on seniority and performance. The nurse manager made comments about the importance of "clear communication with patients" in reference to the charge nurse role.

The FEHA national origin discrimination claim applied the substantial motivating factor standard to whether national origin — as reflected in the nurse's accent — substantially motivated the denial. Our article on accent discrimination in California workplaces covers the specific legal framework that applies to national origin discrimination claims based on accent.

5. Pregnancy discrimination, Orange County employer A marketing coordinator was denied a promotion she had been informally promised. The denial occurred two weeks after she disclosed her pregnancy. The employer cited a "restructuring" of the marketing team.

The substantial motivating factor analysis focused on whether the pregnancy substantially motivated the denial.

The two-week proximity, the informal promise, and the absence of any restructuring documentation predating the pregnancy disclosure all supported the substantial motivating factor inference — even though the employer may have had some legitimate business reason to reconsider the promotion structure.

What the Standard Means for Your Case

If you are evaluating whether you have a viable FEHA discrimination claim, the substantial motivating factor standard is the framework for that evaluation. The practical questions are:

Was there a protected characteristic involved? Race, sex, age, disability, national origin, religion, sexual orientation, gender identity, pregnancy, military status, reproductive health decisions — all protected under FEHA.

Was there an adverse employment action? Termination, demotion, failure to promote, denial of accommodation, hostile work environment, constructive termination — all qualify.

Did the protected characteristic play a real and meaningful role in the action? Not the only role — a substantial role. Timing, comparators, direct statements, inconsistent justifications, and the overall workplace context all contribute to this analysis.

If the answer to all three questions is yes — or potentially yes — you may have a viable FEHA claim under California's substantial motivating factor standard, even if the employer had some legitimate reason for the adverse action alongside the discriminatory one.

Our FEHA Claim Checker can help you assess whether your specific situation meets the threshold for a formal CRD complaint. And our California Wrongful Termination Lawsuit Success Rate Checker provides a broader assessment of whether your situation supports a legal claim.

Frequently Asked Questions

Does the substantial motivating factor standard mean I can win even if my employer had legitimate reasons for the adverse action? Yes — if the discrimination was also a substantial motivating factor. The presence of legitimate reasons does not defeat a FEHA claim under the substantial motivating factor standard. It may limit remedies through the same-decision defense, but it does not eliminate liability where discrimination substantially motivated the decision alongside legitimate reasons.

How is substantial motivating factor different from just "motivated by"? The "substantial" qualifier requires more than a trivial or incidental connection between the protected characteristic and the adverse action. The characteristic must have genuinely influenced the decision — played a real and meaningful role — not merely been present in the background. Courts evaluate whether the discriminatory factor actually contributed to the employer's reasoning, not just whether it existed.

Does the substantial motivating factor standard apply to FEHA retaliation claims as well as discrimination claims? Yes. The same standard applies to FEHA retaliation claims under § 12940(h) — the employee must show that the protected activity was a substantial motivating factor in the adverse action. This is more favorable than the federal but-for standard that applies to Title VII retaliation claims after Nassar.

What happens if the employer proves the same-decision defense? If the employer demonstrates it would have made the same decision regardless of the discriminatory motivation, the employee cannot recover lost wages or reinstatement. However, the employee can still recover declaratory relief — a court finding that the employer violated FEHA — injunctive relief, and attorney's fees. In cases where the declaratory finding has significant value — affecting other employees or establishing institutional liability — the same-decision defense does not render the case worthless.

How does the substantial motivating factor standard interact with California's three-year CRD filing deadline? The filing deadline and the causation standard are separate legal questions. The three-year window to file with the California Civil Rights Department runs from the date of the discriminatory act — regardless of the causation standard that will apply at trial. Missing the deadline forfeits the claim regardless of how strong the substantial motivating factor evidence is.

Talk to a Vetted Employment Attorney — Free Referral

California's substantial motivating factor standard is one of the most employee-favorable causation standards in the country. It is the reason why discrimination cases that would fail under federal law succeed under California's FEHA — and why employers operating in California face real accountability for mixed-motive decisions that would escape liability in other jurisdictions.

If you have experienced an adverse employment action and believe a protected characteristic played a meaningful role in it — even alongside legitimate employer concerns — California law may already protect you. Attorneys in our network handle FEHA discrimination, retaliation, and wrongful termination cases throughout California.

DISCLOSURE

This article is intended for general informational purposes only and does not constitute legal advice. No attorney-client relationship is formed by reading this content. 1000Attorneys.com is a State Bar of California Certified Lawyer Referral and Information Service (LRS #0128), not a law firm. For advice specific to your situation, request a free referral to a vetted California employment attorney.