SpaceX Arbitration Ruling: Ninth Circuit Rejects a Plausibility Test for the EFAA

The Ninth Circuit ruled 2-1 on November 10, 2026, that SpaceX cannot force eight former engineers who say they were fired for objecting to sexual harassment into individual arbitration, because the Ending Forced Arbitration of Sexual Assault and Sexual Harassment Act lets them keep their entire case in court. The SpaceX arbitration ruling, Holland-Thielen v. SpaceX, No. 25-4811, is a published opinion. It holds that a plaintiff triggers the EFAA by filing a complaint that describes conduct asserted to be sexual harassment, without first having to meet the plausibility standard that governs a motion to dismiss.

That second holding is the one practitioners will cite. District courts have split since 2023 on whether a harassment claim must be plausibly pleaded under Twombly and Iqbal before it unlocks the statute's exemption from a pre-dispute arbitration agreement. The Ninth Circuit has now rejected that screen for every federal court from Alaska to Arizona. Employers in those states lose an early tool for sending mixed harassment and employment cases to arbitration, and the ruling arrives two months before a hearing on EFAA-based motions in the Roblox child-exploitation MDL in San Francisco.

What did the Ninth Circuit decide in the SpaceX arbitration case?

The panel affirmed the Central District of California's order denying SpaceX's motion to compel arbitration of the plaintiffs' employment-related claims. Judge Michelle Friedland wrote the majority opinion, joined by Judge Danielle Forrest. Judge Eric Tung dissented.

The majority made three moves. First, it read the EFAA's definition of a "sexual harassment dispute" to require only that the complaint describe conduct the plaintiff asserts is sexual harassment. Second, it treated SpaceX's argument that the conduct was not actually harassment as, in the court's words, a repackaging of the pleading-standard argument it had already rejected. Third, it held that retaliation for opposing alleged sexual harassment falls within the statutory definition. Because the EFAA bars arbitration of the entire case once it applies, the panel did not need to reach SpaceX's narrower arguments about the remaining claims.

The opinion decides only where the dispute will be heard. It makes no finding that harassment or unlawful retaliation took place, and SpaceX denies the allegations.

Why can't SpaceX force the fired employees into arbitration?

All eight plaintiffs signed arbitration agreements as a condition of employment, and SpaceX moved to compel under the Federal Arbitration Act (FAA). Ordinarily, that motion would succeed: an Arbitration Agreement covering employment disputes is enforceable under the FAA unless a contract defense such as Unconscionability applies.

The EFAA, signed on March 3, 2022 and codified at 9 U.S.C. §§ 401–402, overrides that default for one category of cases. Section 402(a) provides that, at the election of the person alleging conduct constituting a sexual harassment dispute, no pre-dispute arbitration agreement or joint-action waiver is "valid or enforceable with respect to a case" that "relates to" the dispute. Section 401(4) defines a sexual harassment dispute as "a dispute relating to conduct that is alleged to constitute sexual harassment under applicable Federal, Tribal, or State law." Section 402(b) adds that a court, not an arbitrator, decides whether the statute applies, notwithstanding any Delegation Clause.

The plaintiffs elected the EFAA. Their complaint, originally captioned in Los Angeles Superior Court in June 2024 and now pending in federal court as No. 2:24-cv-06972, pleads hostile work environment sexual harassment under California's Fair Employment and Housing Act (FEHA) and whistleblower retaliation under California Labor Code § 1102.5, among other counts, and seeks compensatory and punitive damages. Because the alleged firings followed the June 2022 open letter, the dispute arose after the statute's effective date, so the timing fights that decided Combs v. Netflix in the Ninth Circuit do not come into play.

What pleading standard applies to the EFAA in the Ninth Circuit?

SpaceX's main argument was that the statute's word "alleged" imports the federal pleading standard: unless the harassment claim could survive a Rule 12(b)(6) motion, there is no sexual harassment dispute and the arbitration agreement stands. The panel disagreed. In the Ninth Circuit, the question is whether the complaint describes conduct asserted to be a basis for a sexual harassment claim, not whether the allegations are plausible under Rule 8.

That answer resolves, for one circuit, a split that has run through the district courts for more than three years:

Approach	Leading authority	Test for invoking the EFAA	Effect on arbitration
Plausibility screen	Yost v. Everyrealm, Inc., 657 F. Supp. 3d 563 (S.D.N.Y. 2023) (Engelmayer, J.); followed in Gonzales v. Carnival Corp., 757 F. Supp. 3d 1314 (S.D. Fla. 2024)	Harassment claim must state a plausible claim under Twombly and Iqbal	Implausible claim is dismissed; other claims go to arbitration
Rejection of Rule 12(b)(6) analogy	Decisions of Judge Lewis J. Liman (S.D.N.Y.)	Rule 12(b)(6) analysis described as "ill-suited" to the EFAA inquiry	Lower threshold; more cases stay in court
Ninth Circuit (binding)	Holland-Thielen v. SpaceX, No. 25-4811 (9th Cir. Nov. 10, 2026)	Complaint describes conduct asserted to be sexual harassment; no Rule 8 threshold	Entire case stays in court once invoked
Dissent's proposed test	Tung, J., dissenting in Holland-Thielen	Factual allegations that, if true, would amount to sexual harassment under applicable law	Closer to Yost; more claims would be arbitrated

In Yost, Judge Engelmayer dismissed a harassment claim as implausibly pleaded and sent the remaining claims to arbitration; in the companion case, Johnson v. Everyrealm, the harassment claim was plausible and the whole case stayed in court. Under Holland-Thielen, a court in the Ninth Circuit applying the EFAA does not run that merits-adjacent screen before deciding the forum. The defendant can still move to dismiss a weak harassment claim on the merits. What it cannot do is use that weakness as a reason to compel arbitration of everything else.

Does a retaliation claim count as a sexual harassment dispute under the EFAA?

Yes, in the Ninth Circuit, when the retaliation is for opposing conduct asserted to be sexual harassment. SpaceX argued that the plaintiffs were complaining about being fired, not about being harassed, and that an employer's response to an open letter is not harassment. The majority held that a dispute over retaliation for opposing alleged sexual harassment "relat[es] to conduct that is alleged to constitute sexual harassment" within § 401(4).

The point matters because many employment cases that invoke the EFAA lead with retaliation. A worker who reports a supervisor, or who signs a group letter, and is then disciplined often pleads retaliation as the main count, with the underlying harassment as the protected activity. After Holland-Thielen, that pleading structure can keep the case in court in the nine western states and two territories the Ninth Circuit covers.

It also matters for scope. The Sixth Circuit in Bruce v. Adams and Reese, LLP (February 25, 2026) and the Second Circuit in Diaz-Roa v. Hermes Law, P.C. (September 30, 2026) both read "case" in § 402(a) to mean the whole lawsuit. The Ninth Circuit's statement that the EFAA precludes arbitration of the entire case puts it on the same side, so the plaintiffs' FEHA, Labor Code and other claims travel with the harassment-related dispute. No federal court of appeals has adopted a claim-by-claim reading.

What did the dissent in Holland-Thielen v. SpaceX argue?

Judge Tung would have required factual allegations that, if true, would amount to sexual harassment under the applicable law. In his view, the majority's test lets a plaintiff avoid an arbitration agreement by labeling a dispute as harassment, even on frivolous grounds, and so drains the FAA's default of much of its force. His dissent opens with a hypothetical about an employee who argues with a boss over food in the office cafeteria and then calls the quarrel a sexual harassment dispute.

The majority answered in a footnote that the worry is misplaced: a cafeteria dispute is not conduct asserted to be sexual harassment, and the statute still requires a genuine assertion of that kind. Even so, the dissent gives SpaceX a ready-made argument if it seeks rehearing en banc. The dissent's test is close to the Yost plausibility approach and would have produced a different result in district courts that apply it.

Who are the plaintiffs in the SpaceX lawsuit and what do they allege?

The eight plaintiffs, led by Paige Holland-Thielen, are former SpaceX engineers. In June 2022 they helped write and circulate an open letter to management raising concerns about workplace conduct they described as sexual harassment, including Elon Musk's public social media posts, and asking the company to distance itself from them. SpaceX fired them shortly afterward. As reported in coverage of the ruling, SpaceX has said the terminations were tied to the employees' role in "conceiving, writing, and distributing the Open Letter."

The complaint alleges that Musk's conduct fostered a "pervasively sexist culture" at the company, as Reuters summarized it, and includes individual allegations; NBC News reported in 2024 that Holland-Thielen alleges a more senior engineer made a sexual remark to her and that she was fired before learning the outcome of her report to human resources. SpaceX and Musk deny the allegations. The plaintiffs are represented by Lieff Cabraser Heimann & Bernstein. Anne Shaver of that firm told Courthouse News, "We are delighted with the Ninth Circuit's ruling."

The parallel NLRB fight

The same firings produced a separate federal labor case. The employees filed unfair labor practice charges in November 2022, and the National Labor Relations Board issued a consolidated complaint on January 3, 2024, alleging that SpaceX interfered with rights protected by the National Labor Relations Act and seeking reinstatement and back pay. SpaceX responded by suing the agency, arguing that its structure is unconstitutional.

On August 19, 2025, in Space Exploration Technologies Corp. v. NLRB, No. 24-50627, the Fifth Circuit affirmed preliminary injunctions halting the board's proceedings against SpaceX and two other employers, finding that the removal protections for NLRB members and administrative law judges were likely unconstitutional. That procedural detour means the court case now cleared by the Ninth Circuit is the most direct path to a merits ruling on the firings.

Timeline of the SpaceX arbitration ruling

Date	Event
March 3, 2022	EFAA signed into law; applies to disputes arising on or after that date
June 2022	Engineers circulate the open letter; SpaceX fires them shortly afterward
November 2022	Unfair labor practice charges filed with the NLRB
January 3, 2024	NLRB issues consolidated complaint against SpaceX
June 2024	State-court complaint filed in Los Angeles (No. 24STCV14693)
2024–2025	Case proceeds in C.D. Cal. (No. 2:24-cv-06972); motion to compel denied; SpaceX appeals
August 19, 2025	Fifth Circuit affirms injunctions against NLRB proceedings
June 25, 2026	Ninth Circuit oral argument
November 10, 2026	Published 2-1 opinion affirming denial of motion to compel

Can SpaceX appeal the Ninth Circuit ruling?

SpaceX can petition for panel rehearing or rehearing en banc, which in the Ninth Circuit is ordinarily due within 14 days of judgment, or file a petition for certiorari within 90 days. No en banc petition had been reported as of November 11, 2026. A published opinion with a dissent on a recurring question is a standard candidate for en banc review, and the circuit-level picture on the pleading standard is thin. No other circuit has squarely adopted either side, which makes a Supreme Court grant less likely in the near term; the Court denied review of a different EFAA question in Liu v. Miniso Depot CA, Inc. in 2025.

Absent further review, the case returns to the Central District of California, where the docket shows proceedings were stayed pending appeal, to proceed on the merits.

How does the SpaceX arbitration ruling affect other EFAA and mass arbitration cases?

The opinion binds every district court in the Ninth Circuit. The most visible pending test is In re Roblox Corporation Child Sexual Exploitation and Assault Litigation, MDL No. 3166, before Chief Judge Richard Seeborg in the Northern District of California. Roblox and Discord moved on September 22, 2026 to compel arbitration of bellwether cases; plaintiffs' October 27 oppositions invoke the EFAA, replies are due November 20, and a hearing is set for January 13, 2027. The companies' lead argument concerns the statutory definition of sexual assault and whether physical contact is required, which Holland-Thielen does not decide. But any argument that claims are not "adequately alleged" harassment disputes now runs into a binding rejection of a plausibility threshold.

For Mass Arbitration practice, the ruling narrows one category of claims that can be held in individual arbitration. Employers that rely on Class Action Waiver provisions and arbitration programs to manage workforce disputes face a lower threshold in the West for claimants who plead harassment or retaliation for opposing it. The EFAA also voids pre-dispute joint-action waivers at the claimant's election, so a group of employees asserting related harassment disputes can pursue a collective or class proceeding in court rather than being split into individual demands.

What it means for employers, claimants' counsel and the arbitration bar

Employers and drafters. Clause drafting cannot contract around the EFAA, and the statute's § 402(b) removes the arbitrator from the gateway question. In the Ninth Circuit, the realistic defense playbook shifts from motions to compel toward merits motions to dismiss the harassment count and, where it survives, litigating in court. Companies with multi-state workforces should expect forum outcomes to diverge: a complaint that would be screened under Yost in parts of the Southern District of New York will clear the EFAA threshold in California, Washington or Arizona.

Claimants' counsel. Pleading harassment and retaliation for opposing it, with specific facts, remains good practice even without a plausibility threshold, because a weak harassment count can still be dismissed on the merits. Holland-Thielen removes the risk that a dismissal would automatically send the rest of the case to arbitration at the threshold stage. Counsel with retaliation-centered cases should also consider the Ninth Circuit's alignment with the entire-case reading when deciding whether to plead state-law claims together.

Mass-claims practitioners and funders. Where a workforce or user base has related harassment or assault allegations, the EFAA can convert what would have been a Mass Arbitration inventory into court litigation, including an MDL. That changes economics: arbitration Filing Fee exposure falls away for the respondent, but so does the leverage that per-case fees create for claimants. The Roblox MDL hearing in January will be the first large-scale test of how much the statute shifts in a consumer, rather than employment, setting.

FAQ

What is the SpaceX arbitration ruling?

It is the Ninth Circuit's November 10, 2026 published decision in Holland-Thielen v. SpaceX, No. 25-4811, holding 2-1 that eight fired SpaceX engineers can pursue their harassment and retaliation lawsuit in court despite signing arbitration agreements, because the EFAA applies to their case.

What standard did the Ninth Circuit adopt for the EFAA?

A plaintiff invokes the EFAA by filing a complaint that describes conduct asserted to be sexual harassment. The claim does not have to satisfy the Rule 8 plausibility standard from Twombly and Iqbal before the statute applies.

Does the EFAA cover retaliation claims?

In the Ninth Circuit, yes, when the retaliation is for opposing conduct asserted to be sexual harassment. The panel held that such a dispute is a "sexual harassment dispute" under 9 U.S.C. § 401(4).

Who wrote the opinion and who dissented?

Judge Michelle Friedland wrote the majority, joined by Judge Danielle Forrest. Judge Eric Tung dissented and would have required factual allegations that, if true, amount to sexual harassment under the applicable law.

Does the ruling mean SpaceX is liable?

No. The decision resolves only whether the case proceeds in court or arbitration. It makes no finding that harassment or unlawful retaliation occurred, and SpaceX denies the allegations.

Will the ruling affect the Roblox MDL?

It binds the Northern District of California court handling MDL No. 3166, so any argument there that claims must be plausibly pleaded to trigger the EFAA is foreclosed. The Roblox motions turn mainly on the definition of sexual assault, which this opinion does not address.