Federal agencies in the United States adjudicate hundreds of thousands of cases each year—more than the federal courts. Unlike federal and state courts, federal agencies have generally avoided aggregation tools that could resolve large groups of claims more efficiently. Consequently, in a wide variety of cases, agencies risk wasting resources in repetitive adjudication, reaching inconsistent outcomes for the same kinds of claims, and denying individuals access to the affordable representation that aggregate procedures promise. Now more than ever, adjudication programs, especially high volume adjudications, could benefit from innovative solutions, like aggregation.
The Administrative Procedure Act (APA) does not provide specifically for aggregation in the context of adjudication, though it also does not foreclose the use of aggregation procedures. Federal agencies often enjoy broad discretion, pursuant to their organic statutes, to craft procedures they deem “necessary and appropriate” to adjudicate the cases and claims that come before them. This broad discretion includes the ability to aggregate common cases, both formally and informally. Formal aggregation involves permitting one party to represent many others in a single proceeding. In informal aggregation, different claimants with very similar claims pursue a separate case with separate counsel, but the agency assigns them to the same adjudicator or to the same docket, in an effort to expedite the cases, conserve resources, and ensure consistent outcomes.
Yet, even as some agencies face large backlogs, few have employed such innovative tools. There are several possible explanations for this phenomenon. The sheer number of claims in aggregate agency adjudications may raise concerns of feasibility, legitimacy, and accuracy because aggregation could (1) create diseconomies of scale by inviting even more claims that further stretch the agency’s capacity to adjudicate; (2) negatively affect the perceived legitimacy of the process; and (3) increase the consequence of error.
Notwithstanding these risks, several agencies have identified contexts in which the benefits of aggregation, including producing a pool of information about recurring problems, achieving greater equality in outcomes, and securing the kind of expert assistance high volume adjudication attracts, outweigh the costs. Agencies have also responded to the challenges of aggregation by (1) carefully piloting aggregation procedures to improve output while avoiding creation of new inefficiencies; (2) reducing potential allegations of bias or illegitimacy by relying on panels, rather than single adjudicators, and providing additional opportunities for parties to voluntarily participate in the process; and (3) allowing cases raising scientific or novel factual questions to “mature”—that is, putting off aggregation until the agency has the benefit of several opinions and conclusions from different adjudicators about how a case may be handled expeditiously.
The Administrative Conference recognizes aggregation as a useful tool to be employed in appropriate circumstances. This recommendation provides guidance and best practices to agencies as they consider whether or how to use or improve their use of aggregation.
1. Aggregate adjudication where used should be governed by formal or informal aggregation rules of procedure consistent with the APA and due process.
Using Alternative Decisionmaking Techniques
2. Agencies should consider using a variety of techniques to resolve claims with common issues of fact or law, especially in high volume adjudication programs. In addition to the aggregate adjudication procedures discussed in paragraphs 3–10, these techniques might include the designation of individual decisions as “precedential,” the use of rulemaking to resolve issues that are appropriate for generalized resolution and would otherwise recur in multiple adjudications, and the use of declaratory orders in individual cases.
Determining Whether to Use Aggregation Procedures
3.Agencies should take steps to identify whether their cases have common claims and issues that might justify adopting rules governing aggregation. Such steps could include:
a. Developing the information infrastructure, such as public centralized docketing, needed for agencies and parties to identify and track cases with common issues of fact or law;
b. Encouraging adjudicators and parties to identify specific cases or types of cases that are likely to involve common issues of fact or law and therefore prove to be attractive candidates for aggregation; and
c. Piloting programs to test the reliability of an approach to aggregation before implementing the program broadly.
4. Agencies should develop procedures and protocols to assign similar cases to the same adjudicator or panel of adjudicators using a number of factors, including:
a. Whether coordination would avoid duplication in discovery;
b. Whether it would prevent inconsistent evidentiary or other pre-hearing rulings;
c. Whether it would conserve the resources of the parties, their representatives, and the agencies; and
d. Where appropriate, whether the agencies can accomplish similar goals by using other tools as set forth in paragraph 2.
5. Agencies should develop procedures and protocols for adjudicators to determine whether to formally aggregate similar claims in a single proceeding with consideration of the principles and procedures in Rule 23 of the Federal Rules of Civil Procedure, including:
a. Whether the number of cases or claims are sufficiently numerous and similar to justify aggregation;
b. Whether an aggregate proceeding would be manageable and materially advance the resolution of the cases;
c. Whether the benefits of collective control outweigh the benefits of individual control, including whether adequate counsel is available to represent the parties in an aggregate proceeding;
d. Whether (or the extent to which) any existing individual adjudication has (or related adjudications have) progressed; and
e. Whether the novelty or complexity of the issues being adjudicated would benefit from the input of different adjudicators.
Structuring the Aggregate Proceeding
6. Agencies that use aggregation should ensure that the parties’ and other stakeholders’ interests are adequately protected and that the process is understood to be transparent and legitimate by considering the use of mechanisms such as:
a. Permitting interested stakeholders to file amicus briefs or their equivalent;
b. Conducting “fairness hearings,” in which all interested stakeholders may express their concerns with the proposed relief to adjudicators in person or in writing;
c. Ensuring that separate interests are adequately represented in order to avoid conflicts of interest;
d. Permitting parties to opt out in appropriate circumstances;
e. Permitting parties to challenge the decision to aggregate in the appeals process, including an interlocutory appeal to the agency; and
f. Allowing oral arguments for amici or amicus briefs in agency appeals.
7. Agencies that use aggregation should develop written and publicly available policies explaining how they initiate, conduct, and terminate aggregation proceedings. The policies should also set forth the factors used to determine whether aggregation is appropriate.
8. Where feasible, agencies should consider assigning a specialized corps of experienced adjudicators who would be trained to handle aggregate proceedings, consistent with APA requirements where administrative law judges are assigned. Agencies should also consider using a panel of adjudicators from the specialized corps to address concerns with having a single adjudicator decide cases that could have a significant impact. Agencies that have few adjudicators may need to “borrow” adjudicators from other agencies for this purpose.
Using Aggregation to Enhance Control of Policymaking
9. Agencies should make all decisions in aggregate proceedings publicly available. In order to obtain the maximum benefit from aggregate proceedings, agencies should also consider designating final agency decisions as precedential if doing so will:
a. Help other adjudicators handle subsequent cases involving similar issues more expeditiously;
b. Provide guidance to future parties;
c. Avoid inconsistent outcomes; or
d. Increase transparency and openness.
10. Agencies should ensure the outcomes of aggregate adjudication are communicated to policymakers or personnel involved in rulemaking so that they can determine whether a notice-and-comment rulemaking proceeding codifying the outcome might be worthwhile. If agencies are uncertain they want to proceed with a rule, they might issue a notice of inquiry to invite interested parties to comment on whether the agencies should codify the adjudicatory decision (in whole or in part) in a new regulation.
 Other related techniques that can help resolve recurring legal issues in agencies include the use of precedential decisions, declaratory orders as provided in 5 U.S.C. 554(e), and rulemaking. With respect to declaratory orders, see Recommendation 2015-3, Declaratory Orders, 80 Fed. Reg. 78,163 (Dec. 16, 2015), available at https://www.acus.gov/recommendation/declaratory-orders. The Supreme Court has recognized agency authority to use rulemaking to resolve issues that otherwise might recur and require hearings in adjudications. See Heckler v. Campbell, 461 U.S. 458 (1983).
 See Administrative Procedure Act, Pub. L. No. 79-404, 60 Stat. 237 (1946) (codified as amended at 5 U.S.C. §§ 551–559, 701-706 and scattered sections in Title 5).
 Broad discretion exists both in “formal adjudication,” where the agency’s statute requires a “hearing on the record,” triggering the APA’s trial-type procedures, and in “informal adjudication,” where the procedures set forth in APA §§ 554, 556 & 557 are not required, thus allowing less formal procedures (although some “informal adjudications” are nevertheless quite formal).
 This recommendation does not address formal aggregation of respondents or defendants in proceedings before agencies.
 The American Law Institute’s Principles of the Law of Aggregation defines proceedings that coordinate separate lawsuits in this way as “administrative aggregations,” which are distinct from joinder actions (in which multiple parties are joined in the same proceeding) or representative actions (in which a party represents a class in the same proceeding). See American Law Institute, Principles of the Law of Aggregate Litigation § 1.02 (2010) (describing different types of aggregate proceedings).
 See Michael Sant’Ambrogio & Adam Zimmerman, Aggregate Agency Adjudication 27–65 (June 9, 2016), available at https://www.acus.gov/report/aggregate-agency-adjudication-final-report (describing three examples of aggregation in adjudication).
 Cf. Francis E. McGovern, An Analysis of Mass Torts for Judges, 73 Tex. L. Rev. 1821 (1995) (defining “maturity” in which both sides’ litigation strategies are clear, expected outcomes reach an “equilibrium,” and global resolutions or settlements may be sought).
 This recommendation covers both adjudications conducted by administrative law judges and adjudications conducted by non-administrative law judges.