Counsel resist special-master appointments on cost grounds, and the instinct is understandable: another billing professional, another invoice, another layer between the parties and resolution. The instinct is also incomplete. Special masters cost money — but the question is not whether the appointment costs money. It is what the appointment displaces.
What it displaces is the most expensive activity in modern litigation: fighting about process. Discovery is the primary driver of rising litigation cost, and the disputes it spawns — how to preserve, collect, search, and produce electronically stored information; whether a protocol was followed; how to allocate fees across dozens of firms — consume motion practice, dueling expert submissions, and court time that neither side recovers.
§ 01 · What the appointment actually buys
Federal Rule of Civil Procedure 53 authorizes a court to appoint a master to perform duties the parties consent to; to address pretrial and posttrial matters that cannot be “effectively and timely addressed by an available district judge or magistrate judge of the district”; to hold non-jury trial proceedings where an exceptional condition warrants; and to perform accountings or resolve difficult damage computations. The rule’s own language is economic — effectively and timely — and so is its structure: the appointing order delineates duties, scope of authority, timelines, reporting obligations, and compensation. Unlike motion practice, the appointment is scoped, priced, and time-limited at the outset.
The bench has said as much. Chief Justice John Roberts, in his 2015 Year-End Report on the Federal Judiciary, wrote that the discovery process “must provide parties with efficient access to what is needed to prove a claim or defense, but eliminate unnecessary or wasteful discovery,” and that the required assessment of actual need “may … require the involvement of a neutral arbiter … to guide decisions.” Courts reach for masters where a case involves a complex, technical, or specialized area of law; where discovery requires heightened and extensive oversight; or where fact-intensive non-jury determinations loom.
§ 02 · A case study in relocated costs
Rio Tinto plc v. Vale S.A., 306 F.R.D. 125 (S.D.N.Y. 2015), is the canonical illustration. Judge Andrew Peck approved the parties’ stipulated predictive-coding protocol — a protocol designed to be self-executing. Execution promptly became a major point of contention. The parties returned to court over which search terms would cull the document universe before predictive coding began, whether one side could challenge the adequacy of the other’s training after alleged delays in disclosing its seed set, and whether technical disclosures had to be updated and corrected. The court resolved each issue, but the motion practice and hearings were time-consuming, expensive, and heavy with competing expert argument.
The lesson: a technically ambiguous protocol does not eliminate the dispute; it relocates it. An e-discovery special master appointed early can draft unambiguous provisions before disputes arise, monitor compliance as the work proceeds, and decide technical issues that sit beyond the court’s or the parties’ expertise — eliminating rounds of consultant-versus-consultant briefing. The master costs money; the benefits often produce a net gain that is never realized when the court and parties are left to their own devices.
A technically ambiguous protocol does not eliminate the dispute; it relocates it. The appointment is scoped, priced, and time-limited at the outset — motion practice is none of these.
§ 03 · The mass-tort ledger
The same economics govern at the largest scale. In mass tort litigation, courts appoint neutrals under Rule 53 to oversee the distribution of common benefit funds — the pools that compensate attorneys whose work benefited the entire group of plaintiffs. The appointed neutral verifies time and expense submissions, evaluates the value of each firm’s contribution, mediates allocation disputes among counsel, monitors compliance with judicial guidelines, and reports regularly to the court. Recent examples include In re Roundup Products Liability Litigation (N.D. Cal.), In re JUUL Labs, Inc., Marketing, Sales Practices, and Products Liability Litigation (N.D. Cal.), and In re 3M Combat Arms Earplug Products Liability Litigation (N.D. Fla.).
Judges have repeatedly recognized why: unresolved fee disputes impede the progress of the litigation itself and can erode plaintiff recoveries. Early involvement by a court-appointed neutral prevents protracted fee fights, expedites resolution, and reduces the associated costs — while the neutral’s reporting obligations keep the process transparent and accountable to the court.
§ 04 · When the appointment pays
The appointment tends to pay for itself when the answer to any of the following is yes: (1) Does the dispute center on preserving, collecting, or allegedly spoliating electronic data? (2) Does the data sit on proprietary or heavily customized systems? (3) Will a protocol need to be drafted — and compliance with it monitored — to govern the parties’ e-discovery obligations? (4) Are there large quantities of data to process, search, and review, with predictive coding or technology-assisted review in play? (5) Are fees or funds to be allocated across many firms with competing claims of contribution?
Timing compounds the economics. It is faster and cheaper to bring in the neutral before issues arise than to remediate them afterward, and the Federal Rules leave little slack: Rule 16(b)(2) requires scheduling orders within 90 days after a defendant is served. A master in place before the first protocol fight is an investment; one appointed after the third is triage.
The special master’s invoice is visible and easy to object to. The costs it displaces — briefing, hearings, dueling experts, stalled dockets, delayed recoveries — are diffuse and easy to ignore. Price the appointment against the disputes it retires, not against zero.
Draws on “The Power of Neutrality” (2025), co-authored with Hon. Gail A. Andler (Ret.), and Legal Executive Institute articles on e-discovery special masters co-authored with Michael Mann.