1. Adjudication, Formal
agency action
Formal adjudication is a decisional procession involving an adversarial hearing mandated by a statute.  The focus here is on APA formal adjudication, but the organic statute of the agency may prescribe the hearing requirements  apart from the APA.  This section focuses on formal adjudication as distinguished from informal adjudication or other forms of agency action. Formal adjudication usually affects individual rights, not group.  It often has a retroactive impact, rather than being prospective in impact, unlike rulemaking.
agency review of alj
In the formal adjudication, the ALJ will usually make the initial decision, which may then be reviewed at the agency level.  The agency heads have the full power to substitute their judgment for that of the ALJ on all issues of law, fact, and credibility, with the possible exception of demeanor credibility. 
credibility
Where a hearing on the record is required, as in formal adjudication, the credibility of witnesses may be significant.  Demeanor credibility determinations must be made by an observer.  The ALJ usually holds the hearing that creates the record and will be the observer.  The agency heads are limited in their review of demeanor credibility findings, however the agency has the full power to draw its own inferences from the demeanor credibility findings of the ALJ. Nondemeanor credibility as evidenced by the statements in the record can be determined as easily by the agency heads as by the ALJ.
cross examination v rebuttal
A party generally has the right of either cross examination or rebuttal in a formal adjudication. Since hearsay is admissible under the APA and is not subject to meaningful cross examination, the party must frequently rely on rebuttal evidence.  Where error is claimed based on the denial of cross examination, the complaining party must prove that specific, not general prejudice resulted from the denial.  This will often be difficult because the party will have to demonstrate that rebuttal was an inadequate substitute.
combination of functions, deciding and investigating
When an agency decision must be based on a closed record, as required in formal adjudication, the decider cannot be biased by off the record considerations.  A claim of bias might involve the combination of the functions of prior investigation and subsequent deciding. All error must be shown with specificity.  Absent the showing of substantial prejudice, this claim of combination of function will be rejected by the reviewing court.  If the prior investigation can be shown to have resulted in the use of nonrecord information in making the formal adjudication decision, the court may find error.
discretion
The agency decision to give formal adjudication notice of an enforcement action against an individual or to not give notice is one of the most important decisions that an agency can make. Statutes and courts generally permit the agency a broad realm of prosecutorial discretion in making this decision to proceed or not proceed.
findings
The findings requirements are a critical statutory requirement element of the agency decision in a formal adjudication.  A variety of different findings are likely to be required, including a finding on jurisdiction, findings as to each element of each rule violation that is found, and findings of fact adequate to support the original complaint. Findings are the explanation that reviewing courts need in order to determine whether substantial evidence exists and whether various elements of the adjudication order are adequately explained.  Inadequate findings are a common reason for remanding the agency order back to the agency.
full and fair hearing requirement
The full and fair hearing requirement may be the product of due process or the product of statutory mandate.  The basic requirement is that the record must be adequate for findings on all required elements.  While this is the duty of lawyers representing their clients in most cases, where lawyers are not used, the duty of insuring a complete record may fall on the ALJ if the unrepresented party does not fully meet their burden for a full and complete record.  To meet the full and fair hearing requirement, the ALJ may be required to ask questions or suggest lines of questioning.  The ALJ may have to impose the requirement or make the suggestion as to what type of evidence is needed and where it might be found.  In short, the ALJ may have to take an active role in looking out for some of the interests of one of the unrepresented parties if they cannot initially meet the full record of decisionmaking requirement.  Later the ALJ must revert to a neutral stance to make the initial decision.
mental processes of decider
The general Morgan case requirement is that the responsible agency decider named in the statute must make a personal decision in the final decision for the agency in formal adjudication.  The agency heads need not personally read the entire record nor write the entire final decision, but must use their mental processes to some extent in applying the law to the facts and issues. Paradoxically, the decider usually cannot be called into court to prove that this use of mental processes actually occurred.
mitigation
In the formal adjudication, the agency order may impose a sanction on the offender.  The organic statute may give the agency discretion to mitigate the sanction upon application and argument of the offender.  Mitigation should be viewed as a discretionary matter with the agency that must be based on a reasonable explanation of how the mitigation will help to achieve the goals of the statute.  Mitigation is not an arbitrary power of the agency head.
order
An order is the result of a formal adjudication, as defined in most APAs.  The order usually consists of findings of fact and conclusions of law, with detailed reasons and analysis.  The order of the agency may look much like an appellate court decision.
outside consultants, advisors
The agency decider may be able to use outside assistance in reaching the final decision.  These aides may not make the actual decision, nor are they permitted to add facts to the record in giving their advice.  Some statutes may specifically provide for this type of assistance, others may be silent.  See also, agency head, exparte contact; adjudication, formal, record.
prehearing conference
The prehearing conference is usually held prior to a complex formal adjudicatory hearing. Large agencies frequently have promulgated elaborate procedural rules detailing the nature of the prehearing conference.  Like its trial counterpart, the prehearing conference will often result in binding agreements concerning the introduction of evidence, the use of witnesses, and may limit the issues.  It is also the last time the parties may make a final effort to settle the issues without having go into a formal adjudication.  The prehearing conference will often conclude with a written agreement about the matters that could be resolved and this agreement will be binding on the parties.
procedure
A common procedural path in adjudication involves the following steps:  investigation to determine any rule or statutory violations, notice, hearing at ALJ level, ALJ decision, opportunity to comment at agency level, agency review and decision, demonstration of eligibility for judicial review, judicial review.
record
In formal adjudication, the record is the proceedings of the hearing, including prehearing conference agreements, official notice, and the decision by the ALJ.  The closed record is the sole source for fact finding at the agency level and the sole source for application of the substantial evidence test in judicial review.
right to representation
The named parties to a formal adjudication generally have the right to be represented by hired counsel.  There is no right to appointed counsel in the administrative process except in a few exceptional circumstances.
sanction
The agency has great discretion in imposing a sanction on a party where a finding of violation of a rule has resulted from the formal adjudication.  The sanction must be one permitted by the statute and it must be within the range identified in the statute.  Consistency of application of the sanctions is not required.
scope of review
The scope of review of facts under an APA in a formal  adjudication is usually the substantial evidence test.  On questions of law, the court may substitute its judgment.  The scope of review at the judicial level must be distinguished from the agency authority to review the ALJ decision and from the burden of proof at the agency hearing level.