MDL Toolkit

Judicial Adjuncts: Magistrate Judges and Special Masters in MDLs

Judges commonly appoint “judicial adjuncts” in MDLs to assist with different stages of the litigation, including pretrial, settlement, and post-settlement. Coined by Professor Linda Silberman, the term “judicial adjuncts” refers to a number of actors including, among others, magistrate judges, special masters, mediators, and various settlement-related administrators. Linda Silberman, Judicial Adjuncts Revisited: The Proliferation of Ad Hoc Procedure, 137 U. Pa. L. Rev. 2131, 2131–32 (1989).

This module focuses on how courts deploy two of the most common and versatile types of adjuncts: magistrates and special masters. Instead of focusing on one or a few specific inflection points in the MDL, transferee courts may deploy both magistrates and special masters to assist with tasks throughout the course of the litigation, and in practice, many MDL judges look to one or both types of adjuncts as vital partners in facilitating an efficient and fair MDL proceeding. For discussions regarding other types of adjuncts, including claims administrators and other settlement-focused adjuncts, see the common benefit fee module and the facilitating and structuring settlement module.

MDL judges have considerable discretion to appoint magistrate judges and special masters according to their own case management preferences and the needs of the litigation. In appointing these adjuncts, transferee courts must balance their value in helping the court navigate thorny and time-consuming topics, ranging from discovery to settlement negotiations and disbursements (among many other issues), against “over-delegation, as excessive delegation can make management and coordination more difficult and add unduly to the parties’ expenses.” Bolch J. Inst., Duke L. Sch., Guidelines And Best Practices for Large and Mass-Tort MDLS 4 (2d ed., 2018) [hereinafter Bolch Guidelines].

This module starts with a review of some basic considerations that transferee judges take into account when appointing magistrates and special masters. It then discusses the various roles and responsibilities assigned to each of these adjunct types.

For more on judicial adjuncts, see Fed. Jud. Ctr., Manual for Complex Litigation (4th ed. 2005) § 10.14 [hereinafter MCL]; Bolch Guidelines, supra at 4; Elizabeth Chamblee Burch & Margaret S. Williams, Judicial Adjuncts in Multidistrict Litigation, 120 Colum. L. Rev. 2129 (2020).

Basic Considerations for Appointing Magistrate Judges and Special Masters

Magistrate Judges

Special Masters