A partner called me last month with a problem I've been hearing more often. His firm had spent four months building a consumer privacy mass arb campaign against a fintech platform. Signed 6,200 claimants. Modeled the whole thing on AAA's fee schedule and process arbitrator framework. Then someone on his team pulled the defendant's updated terms of service and found a clause that hadn't been there six months earlier.

Arbitration would now be administered by NAM, under NAM's Supplemental Rules for Mass Arbitration Filings. With a mandatory bellwether phase. With all non-bellwether demands stayed pending resolution of the initial batch.

His entire financial model was built for a different provider. And he's not alone.

The Quiet Migration Away from AAA and JAMS

If you draft consumer arbitration clauses for a living, you already know this. If you file against them, you might not have caught it yet. Over the past 18 months, a growing number of corporate defendants have rewritten their terms to designate NAM (National Arbitration and Mediation) or ADR Services as their arbitration provider, replacing AAA or JAMS.

Cash App did it. Epic Games did it. CrashPlan, West Coast Dental, and a string of mid-market consumer platforms followed. The pattern is consistent: swap the provider, layer bespoke mass-filing definitions on top of NAM's supplemental rules, and build in a bellwether-first, batch-second procedural framework that the company controls from the drafting stage.

Why? Because AAA's mass arbitration rules (revised January and April 2024) and JAMS's mass arbitration procedures (May 2024) were designed with some degree of neutrality. They impose process arbitrators, fee schedules that tier but don't eliminate exposure, and timelines that still create real financial pressure on respondents. NAM's framework, by contrast, gives defendants more room to shape the procedural architecture before a single demand gets filed.

What NAM's Bellwether-and-Batch Structure Actually Means for Your P&L

Here's the math most firms haven't run yet.

Under AAA, if you file 5,000 consumer demands, the process arbitrator manages them in tranches, but all 5,000 are "live" in the system. Filing fees are due. Administrative fees tier up. The respondent faces real, immediate cost pressure, which is exactly what drives early settlement conversations.

Under a NAM bellwether clause, the typical structure works like this: 10 to 50 cases get selected as bellwethers. Those proceed to full arbitration or mediation. The remaining 4,950 demands are stayed. Not paused informally. Stayed, with the arbitration provider holding them in administrative abeyance.

That changes three things at once:

  1. The defendant's cost pressure evaporates in the short term. Instead of facing filing and administrative fees on 5,000 cases, they're paying fees on 50. The economic lever that forces early settlement conversations is gone until the bellwethers resolve and the parties reconvene.
  2. Your cost of capital changes. If you're funding claimant acquisition at $800 to $1,500 per signed claimant (which is the realistic range for most consumer statutory claims in 2026), you've deployed $4 million to $7.5 million in acquisition costs. Under AAA, you might see settlement pressure within 6 to 9 months. Under a NAM bellwether framework, the bellwether phase alone can run 12 to 18 months before the parties even discuss the remaining inventory. Your capital is tied up longer, and the time value of money erodes your effective return.
  3. Completion becomes a two-phase problem. You need claimants engaged enough to participate in bellwether selection, and then you need them to still be reachable and responsive 12 to 24 months later when the stayed cases finally move. A claimant who signed a retainer in month one and hasn't heard anything meaningful by month fourteen is not picking up the phone.

The Fallback Trap

Some of these NAM clauses include a fallback provision: if NAM is unavailable or declines to administer, disputes go to court or to a different forum. That sounds like a safety valve. It's actually a trap door.

If NAM declines (and providers do decline mass filings when they hit capacity or policy limits), the fallback forum often doesn't have mass arbitration infrastructure at all. You're back to individual litigation or small claims, which may be viable for some claims but blows up the portfolio economics of a 5,000-claimant campaign.

Smart firms are reading the fallback language before they spend a dollar on acquisition. If the fallback is "any court of competent jurisdiction," that's a fundamentally different risk profile than "AAA under its Consumer Rules."

How to Re-Model for a NAM World

None of this means NAM-designated cases are unfillable. It means the financial model is different, and the firms that adjust first will capture the cases that others walk away from too early.

Three adjustments worth making now:

First, extend your capital timeline. If your current models assume 9-month resolution cycles, stretch them to 18 to 24 months for any case with a bellwether clause. Run the IRR at both timelines. Some cases still pencil. Some don't. The ones that don't are better identified before you spend seven figures on acquisition.

Second, treat the bellwether phase as your leverage point, not your waiting room. The bellwether results set the baseline for every subsequent settlement conversation. If your bellwether cases are well-selected, well-prepared, and produce strong outcomes, the defendant's incentive to settle the remaining inventory goes up dramatically. Invest disproportionately in bellwether case quality. Treat them like trial cases, not administrative checkboxes.

Third, build your completion infrastructure for a long engagement cycle. This is where most firms get caught. Legacy claims administrators were built for a single notice-and-response window. Send a packet, wait 60 days, report a response rate. That model breaks completely when you need claimants engaged across an 18-month bellwether phase and then re-engaged for the batch resolution that follows.

What works is persistent, multi-channel outreach that treats completion like a sales funnel. Native document signing that lets a claimant execute their release from their phone in 90 seconds. SMS and email sequences that adapt based on engagement signals, not just calendar dates. And an AI layer that can handle the volume of inbound inquiries ("What's happening with my case?") without burning through your operating budget on call center staff.

The Opportunity in the Gap

Here's what I keep coming back to. Every time a defendant rewrites its arbitration clause, there's a window. The old clause is still in effect for claimants who agreed to it before the update. The new clause applies going forward. Firms that track these changes in real time can build campaigns around the old-clause claimant population before the window closes entirely.

That requires monitoring. It requires fast intake. And it requires an administrator who can handle the complexity of running two different procedural tracks for the same defendant, because your pre-update claimants might be headed to AAA while your post-update claimants are headed to NAM.

The firms winning this game aren't the ones with the biggest ad budgets. They're the ones who read a terms-of-service update and see a P&L, not a press release.

This is the kind of case-math modeling we do with plaintiff firms at GroupSettle before a single demand gets filed. If you're evaluating a NAM-designated matter or need to re-model an existing campaign, reach out to Kasia at (800) 800-4045 or visit massarb.groupsettle.com.

Harry Hedaya is the founder of Send It By Text, the native document signing, SMS, and email platform behind GroupSettle's mass arbitration completion stack. Their AI super agent handles over 80% of claimant inquiries on its own, which lifts engagement rates further. He works with plaintiff firms running live mass arb campaigns.