Mass arbitration is on the rise, impacting legal teams in consumer-scale companies across technology, financial services, entertainment, and retail sectors. Plaintiff firms are also recruiting consumers through social media, filing thousands of claims at once against companies. This blog unpacks this increasing risk, and what it means for service of process and legal operations teams.

For many in-house legal teams, the surge in mass arbitration claims is becoming a real operational pressure. Legal teams in CSC’s 2025 research say rising volumes are straining already complex SOP workflows, and 73% report that mass arbitration is directly impacting data accuracy and reporting, leading to delays and regulatory challenges.

What’s mass arbitration and what’s fueling its growth?

So, what is mass arbitration, really? At its core, it’s when many individual arbitration claims are filed simultaneously against the same party. Each claim is separate, but they’re coordinated and often nearly identical.

The American Arbitration Association® (AAA®) reported more than 280,000 individual claims filed with the AAA in 2024 under mass arbitration umbrellas, underscoring the significance of the procedure. Impacted companies typically have had mandatory arbitration clauses in their terms of service (TOS) and other agreements that apply to large populations of end users, vendors, and contractors.

A critical driver behind the growth of mass arbitration is that the plaintiff’s bar has effectively taken a mechanism that was written into TOS and agreements to shield companies from individual lawsuits and weaponized these terms against them.

Plaintiff firms are also turning to social media and other tools to reach a large audience, hoping to solicit potential plaintiffs and build a critical mass. Once achieved, they are able to coordinate the simultaneous delivery of hundreds/thousands of claims.

CSC’s research shows that legal teams are already reacting: 92% of companies have invested in in-house technology systems over the past three years to meet rising SOP demands, and 97% use some form of AI to support SOP activities. Mass arbitration is one of the big reasons why.

Operational risks and a need for new SOP management strategy

Companies are rushing to rewrite terms to protect themselves from mass filings, but they are playing catch up. Although arbitration providers, such as the American Arbitration Association (AAA) and Judicial Arbitration and Mediation Services (JAMS), have adjusted fee structures and rules to mitigate the impact of mass arbitration, those updates have primarily limited certain case types. Significant risk remains for companies that become targets, and many experts predict the plaintiffs’ bar to adjust tactics and innovate around these changes to maintain pressure.

On top of that, mass arbitration doesn’t just create legal risk but also an operational one. Every new arbitration filing is also a new SOP event, which arrives in bulk and overloads the traditional intake model of email forwarding, manual spreadsheets, and siloed case files.

According to the findings in our latest report, key pain points faced when handling mass arbitration include:

  • Data accuracy. 61% of respondents cite data accuracy as a major hurdle, and 73% say mass arbitration specifically increases reporting errors. Each filing needs to be linked to the correct legal entity, matter, jurisdiction, and responsible team. Mis-tagging a defendant or jurisdiction risks missed deadlines or mismanaged obligations.
  • Fragmented intake and routing. Different offices, business units, or outside partners may all receive SOP, which then must be routed to the right people. 34% of respondents highlight the complexity of managing varied rules across states and jurisdictions.
  • Manual tracking and reporting. 59% say manual SOP tracking hinders effective management, especially in a mass arbitration scenario.
  • Technology limitations. 96% are concerned that their current technology can’t keep up with SOP demands in a timely, accurate way.

Even one misstep can result in defaults, loss of rights, sanctions, or unnecessary cost escalation, especially in states where arbitration rules impose strict timelines for responses and fee payments.

Why specialist providers and proactive strategy matter

Given all this, the worst time to think about mass arbitration is after you’ve received a flood of filings. Planning ahead is more cost efficient and less stressful than a reactive crisis model. Many legal teams in our research said they want a highly networked, transparent SOP provider that prioritizes data accuracy, handles multistate intake, and uses best-in-class technology while keeping data secure and compliant. This helps legal teams by:

  • Supporting high-volume, multijurisdiction SOP intake, including arbitration-related documents.
  • Capturing clean, centralized data on each matter at the point of service, reducing downstream errors.
  • Providing dashboards and reporting that let legal teams track arbitration trends, deadlines, and outcomes in real time.