The Lawson v. PPG Framework — How California Whistleblower Retaliation Claims Are Proven

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Updated April 2026 to reflect the California Supreme Court's 2022 decision in Lawson v. PPG Architectural Finishes, Inc., 12 Cal.5th 703, Labor Code § 1102.6's two-step framework, SB 497's 2024 rebuttable presumption, and current California appellate application of the contributing factor standard.

Before January 2022, California courts were split on which legal framework governed whistleblower retaliation claims under Labor Code § 1102.5. Some courts applied the McDonnell Douglas burden-shifting framework borrowed from federal employment discrimination law.

Others applied the two-step framework set out in Labor Code § 1102.6. The split created inconsistent outcomes and significant uncertainty about what employees had to prove and what employers had to show in defense.

The California Supreme Court resolved the split in Lawson v. PPG Architectural Finishes, Inc., 12 Cal.5th 703 (2022). The Court held that § 1102.6 — not McDonnell Douglas — is the correct framework for § 1102.5 whistleblower retaliation claims.

That decision changed whistleblower litigation in California fundamentally — lowering the causation threshold for employees, raising the defense burden for employers, and eliminating the McDonnell Douglas pretext analysis from § 1102.5 cases entirely.

The Lawson framework reshapes the burden-of-proof structure for California whistleblower retaliation — particularly in cases involving termination. For the full treatment of California wrongful termination theories (including how the Tameny doctrine and Lawson framework interact), see our California Wrongful Termination guide.

Understanding the Lawson framework is essential to understanding every whistleblower retaliation claim filed in California today.

What the Court Decided in Lawson v. PPG

Wallen Lawson worked as a territory manager for PPG Architectural Finishes. He was asked by his supervisor to falsify product performance reports — a request he refused and later reported to PPG's ethics hotline.

PPG subsequently placed Lawson on a performance improvement plan and eventually terminated him. Lawson sued under Labor Code § 1102.5.

The central legal question was which framework governed the claim. The Ninth Circuit, faced with the question, certified it to the California Supreme Court. The Supreme Court held unequivocally: Labor Code § 1102.6 provides the applicable framework for § 1102.5 retaliation claims. McDonnell Douglas does not apply.

The Court's reasoning was grounded in statutory text and legislative intent. Labor Code § 1102.6 explicitly sets out a burden-shifting framework for § 1102.5 claims — a framework the Legislature enacted precisely to govern these cases. Applying McDonnell Douglas instead would substitute a judicially created federal framework for the Legislature's own statutory design. The Court refused to do so.

The § 1102.6 Two-Step Framework — How It Works

Under the framework Lawson confirmed, the § 1102.5 whistleblower retaliation claim proceeds in two steps.

Step 1 — The Employee's Burden: Contributing Factor

The employee must demonstrate by a preponderance of the evidence that the protected disclosure was a contributing factor in the employer's decision to take the adverse employment action.

The contributing factor is a deliberately lower standard than a substantial motivating factor — which governs FEHA retaliation claims — and is substantially lower than the but-for causation standard that governs some federal claims.

A contributing factor means the protected disclosure played any role in the adverse action, even a minor role, even alongside other legitimate factors. The disclosure need not have been the primary reason, the dominant reason, or even a significant reason. Any causal contribution satisfies the employee's burden at Step 1.

Step 2 — The Employer's Burden: Clear and Convincing Evidence

Once the employee establishes contributing factor causation, the burden shifts to the employer — and it does not shift back. The employer must demonstrate by clear and convincing evidence that it would have taken the same adverse action for legitimate, independent reasons even if the employee had not made the protected disclosure.

Clear and convincing evidence is a significantly higher standard than preponderance of the evidence. It requires that the employer's legitimate reason be highly probable — not merely plausible, not merely supported by some evidence, but established with sufficient certainty that the factfinder is convinced the employer would have acted the same way regardless of the disclosure.

An employer who articulates a plausible business reason but whose evidence is ambiguous, incomplete, or contradicted by the internal record does not meet this standard.

How Lawson Differs From McDonnell Douglas — The Critical Distinctions

The practical differences between the Lawson framework and the McDonnell Douglas framework are substantial — and they systematically favor employees in § 1102.5 cases.

Element	Lawson / § 1102.6 Framework	McDonnell Douglas Framework
Employee's causation burden	Contributing factor — any causal role	Substantial motivating factor — real and meaningful role
After employee's showing	Burden shifts permanently to employer	Burden shifts to employer to articulate reason
Employer's burden	Clear and convincing evidence — highly probable	Preponderance — articulate a legitimate reason
Does burden shift back to employee?	❌ No — employer bears the burden through	✅ Yes — employee must show pretext
Pretext analysis required?	❌ No — irrelevant under § 1102.6	✅ Yes — central to the McDonnell Douglas framework
SB 497 presumption available?	✅ Yes — 90-day window creates rebuttable presumption	❌ No
Applicable to FEHA retaliation?	❌ No — FEHA uses substantial motivating factor	✅ Yes — McDonnell Douglas applies to FEHA

The most consequential difference is the elimination of the pretext requirement. Under McDonnell Douglas, once the employer articulates a legitimate business reason, the burden shifts back to the employee to show that the reason is pretextual—a demanding showing that requires affirmative evidence undermining the employer's stated justification.

Under Lawson, the burden never returns to the employee. After the employee establishes contributing factor causation, the employer must prove its same-decision case by clear and convincing evidence. The employee does not need to show pretext — the employer must prove its legitimate reason was the ac

This distinction is decisive at summary judgment. Under McDonnell Douglas, an employer who articulates a plausible performance-based reason has often survived summary judgment, forcing the employee to trial on the pretext claim. Under Lawson, an employer whose internal record contradicts its stated reason, or whose evidence of the legitimate justification falls short of clear and convincing, cannot survive summary judgment merely by articulating a reason.

The Contributing Factor Standard in Practice

The contributing factor standard shapes every stage of a § 1102.5 case — from the complaint through discovery and trial. Understanding how it applies at each stage determines the strategy for both sides.

At the pleading stage: The employee must allege facts that plausibly suggest the protected disclosure played some role in the adverse action. The Lawson standard makes pleading easier — close temporal proximity between the disclosure and the adverse action, without more, is often sufficient at this stage.

At summary judgment: The employee must produce evidence — admissible or reasonably capable of being presented in admissible form at trial — that the disclosure contributed to the decision. Temporal proximity, the decision-maker's knowledge of the disclosure, changes in treatment following the disclosure, and inconsistencies in the employer's stated reason all support the contributing factor showing.

The employer must then show by clear and convincing evidence — evaluated on the summary judgment record — that it would have acted the same way regardless. An employer who cannot produce that showing on summary judgment loses the motion.

At trial: The jury is instructed on the two-step framework. The employee presents contributing factor evidence. The employer presents its same-decision evidence. The jury evaluates whether the employer has proved by clear and convincing evidence — using CACI instructions calibrated to the § 1102.6 standard — that the adverse action would have been taken regardless of the disclosure. The clear-and-convincing standard is explicitly conveyed to the jury, and the employer's burden is presented as the operative question.

SB 497 — The Layer Added on Top of Lawson

SB 497, effective January 1, 2024, added a rebuttable presumption of retaliation to § 1102.5 that operates within — and strengthens — the Lawson framework.

When an employer takes an adverse action against an employee within 90 days of the employee's protected disclosure, the presumption of retaliation arises automatically. This means the employee's Step 1 contributing factor showing is made by operation of law — the timing alone satisfies the causation element.

The employer must then rebut the presumption with evidence of a legitimate non-retaliatory reason before the full § 1102.6 burden-shifting framework proceeds.

SB 497 does not replace the Lawson framework — it front-loads Step 1 for cases falling within the 90-day window. Once the presumption is rebutted by a legitimate reason, the employer must still prove, under the full § 1102.6 framework confirmed in Lawson, by clear and convincing evidence that it would have taken the same action regardless of the disclosure.

The combined effect of Lawson and SB 497 for cases within the 90-day window is significant: the employee's causation burden is presumed by timing, and the employer must overcome both the presumption and the clear-and-convincing-evidence standard. For the full SB 497 analysis in the retaliation causation context, see our guide to proving causation in California retaliation cases.

How the Lawson Framework Interacts With FEHA Claims

Many § 1102.5 whistleblower situations also support FEHA retaliation claims — particularly when the protected disclosure involved reporting discrimination, harassment, or accommodation violations. When both § 1102.5 and FEHA § 12940(h) claims arise from the same conduct, they are governed by different frameworks.

The FEHA retaliation claim applies the substantial-motivating-factor causation standard and the McDonnell Douglas burden-shifting framework — including the pretext requirement. The § 1102.5 claim applies the Lawson contributing-factor standard and the § 1102.6 framework, with no pretext requirement and the employer's burden of clear and convincing evidence.

Pursuing both simultaneously is almost always the stronger strategic position. The § 1102.5 claim provides the more favorable causation standard and the higher employer burden. The FEHA claim provides broader remedial depth — uncapped emotional distress and punitive damages, mandatory attorney's fees under Government Code § 12965(b), and the CRD administrative process that FEHA requires.

For the full analysis of how FEHA and § 1102.5 claims stack, see our California workplace retaliation guide.

Real Cases — The Lawson Framework Applied

Technology, San Jose. A compliance officer disclosed suspected securities fraud to her company's general counsel and subsequently to the SEC. Two months later, she was placed on a performance improvement plan — the first formal discipline in six years of employment.

The contributing factor showing was established by the two-month temporal proximity and the absence of any pre-disclosure performance documentation. Under the Lawson framework, the employer bore the burden of proving by clear and convincing evidence that the PIP would have been issued regardless of the disclosure.

The employer's attempt to rely on vague "communication style" concerns — unsupported by any contemporaneous documentation — failed to meet the clear-and-convincing standard. The § 1102.5 retaliation claim survived summary judgment. Use our wrongful termination case qualifier to evaluate whether the timing and documentation in your situation support a contributing factor showing under Lawson.

Healthcare, Los Angeles. A hospital billing manager reported suspected Medicare overbilling to the compliance department. Eight months later, she was selected for a reduction in force. The eight-month gap weakened the temporal proximity argument — but the contributing factor standard required only any causal role, not a strong inference from timing alone.

Discovery produced internal communications showing the compliance department had flagged her report to hospital leadership, and that the RIF selection criteria were modified after her report in ways that systematically disadvantaged her role.

The combination of decision-maker knowledge and suspicious criteria modification established contributing factor causation despite the gap. The employer's clear-and-convincing-evidence burden — requiring proof that the RIF selection would have included her regardless of the disclosure — was not met on the summary-judgment record.

Our FEHA Claim Checker evaluates how decision-maker knowledge interacts with the contributing factor standard in your specific situation.

What the Lawson Framework Means for Your Case

If you have been terminated, demoted, or subjected to adverse employment action after making a protected disclosure under Labor Code § 1102.5, the Lawson framework means two things practically:

Your causation burden is lower than in a FEHA retaliation case — contributing factor, not substantial motivating factor. Any evidence that the disclosure played a role in the decision — timing, decision-maker knowledge, changed treatment, documentation timing — satisfies Step 1.

Your employer's defense burden is higher than in a FEHA case — clear and convincing evidence, not preponderance. An employer who cannot demonstrate with high certainty that the adverse action would have been taken regardless of your disclosure cannot prevail on its same-decision defense.

File with the California Labor and Workforce Development Agency and then directly in the California Superior Court within three years under Code of Civil Procedure § 338.

No CRD administrative exhaustion is required for § 1102.5 claims. For the complete California whistleblower protections framework — including all qualifying disclosures, the SB 497 civil penalty, and available damages — see our California whistleblower protections guide.

Frequently Asked Questions

What did Lawson v. PPG actually change about California whistleblower law?

Lawson confirmed that Labor Code § 1102.6 — not the McDonnell Douglas framework borrowed from federal discrimination law — governs § 1102.5 whistleblower retaliation claims.

This eliminated the pretext requirement in § 1102.5 cases, lowered the employee's causation burden to the contributing-factor standard, and established that the employer must prove by clear and convincing evidence — a significantly higher standard than preponderance — that it would have taken the same action regardless of the protected disclosure.

What is the contributing factor standard, and how does it differ from a substantial motivating factor?

A contributing factor means the protected disclosure played any causal role in the adverse action, even a minor role alongside other factors. The substantial motivating factor — which governs FEHA retaliation claims — requires that the disclosure have played a real and meaningful role. A contributing factor is a lower threshold, making it easier for § 1102.5 plaintiffs to establish causation than FEHA plaintiffs.

Does the employer always have to prove clear and convincing evidence after I show a contributing factor?

Yes — once the employee establishes that the disclosure was a contributing factor in the adverse action, the burden shifts to the employer and does not return to the employee. The employer must prove by clear and convincing evidence that it would have taken the same adverse action regardless of the protected disclosure. The employee does not need to show pretext.

Can I have both a § 1102.5 claim under the Lawson framework and a FEHA retaliation claim?

Yes — and pursuing both simultaneously is usually the stronger strategic position. The § 1102.5 claim benefits from the contributing-factor standard and the employer's burden of clear and convincing evidence. The FEHA claim adds uncapped emotional distress, punitive damages, and mandatory attorneys' fees. The two claims are independent, governed by different frameworks, and frequently arise from the same retaliatory conduct.

What is the statute of limitations for a § 1102.5 claim under the Lawson framework?

Three years from the adverse employment action under Code of Civil Procedure § 338. No administrative exhaustion is required — the civil lawsuit can be filed directly in the California Superior Court. This is a significant advantage over FEHA claims, which require a CRD complaint and right-to-sue notice before civil filing.

How does SB 497 interact with the Lawson framework?

SB 497 adds a rebuttable presumption of retaliation when the adverse action occurs within 90 days of the protected disclosure. For cases within the 90-day window, the presumption satisfies the employee's Step 1 contributing factor burden by operation of law — the timing alone establishes causation. The employer must rebut the presumption and then still meet the clear-and-convincing-evidence standard under § 1102.6. The two provisions work together — SB 497 front-loads Step 1, and Lawson confirms the employer's high burden at Step 2.

Connect With a Vetted California Whistleblower Attorney

The Lawson framework gives § 1102.5 plaintiffs a significantly more favorable litigation landscape than any other California employment retaliation statute. Identifying whether your situation qualifies for § 1102.5 protection — and building the contributing factor record before evidence becomes unavailable — is the most important early step in any whistleblower retaliation case.

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.