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In medical malpractice litigation, the testimony of expert witnesses is often the deciding factor in whether a plaintiff or defendant prevails. Yet a recurring procedural question arises: can experts remain in the courtroom while other witnesses testify, or must they be excluded under rules that prohibit witnesses from hearing each other’s testimony?
The Arizona Supreme Court addressed this issue in Spring v. Bradford (2017), providing important guidance on how Arizona Rule of Evidence 615 applies to expert witnesses. This ruling clarified that experts are not automatically exempt from sequestration and that parties must demonstrate why an expert’s presence in the courtroom is essential.
Importantly, Arizona amended Rule 615 effective January 1, 2024 to conform in part with the 2023 federal amendments. The rule’s structure and the requirement for a specific showing of necessity remain in place, confirming that Spring v. Bradford is still the guiding authority.
Rule 615, often called the “rule of exclusion,” requires the court, at a party’s request, to exclude witnesses from the courtroom so they cannot hear other testimony.
Yes. Experts are not automatically exempt. A party must show that the expert’s presence in court is essential to presenting the case.
Sometimes. Courts may allow an expert to remain if their presence is necessary for forming opinions or assisting attorneys, but the judge decides on a case-by-case basis.
In Spring v. Bradford (2017), the Court clarified that expert witnesses are not automatically exempt from exclusion and that attorneys must show why their presence is essential.
Rule 615 is often called the “rule of exclusion.” Both the federal and state versions aim to prevent witnesses from shaping their testimony based on what they hear in court. The rule works as follows:
A party who is a natural person.
An officer or employee of a party who has been designated as the party’s representative.
A person whose presence is shown to be essential to presenting the party’s case.
A person authorized by statute to be present.
A crime victim who wishes to be present (Arizona only).
The third exception is the most relevant to expert witnesses. It allows courts to permit an expert to remain in the courtroom if their presence is necessary to the attorney’s case strategy or their expert opinion.
Arizona Rule of Evidence 615 applies to expert witnesses in medical malpractice cases, meaning experts are not automatically exempt from sequestration when other witnesses testify. This article explains the Arizona Supreme Court’s decision in Spring v. Bradford, the essential-presence exception, Arizona’s 2024 Rule 615 amendment, and practical steps attorneys can take to address expert sequestration, transcript access, and related objections before and during trial.
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In medical malpractice litigation, the testimony of expert witnesses is often the deciding factor in whether a plaintiff or defendant prevails. Yet a recurring procedural question arises: can experts remain in the courtroom while other witnesses testify, or must they be excluded under rules that prohibit witnesses from hearing each other’s testimony?
The Arizona Supreme Court addressed this issue in Spring v. Bradford (2017), providing important guidance on how Arizona Rule of Evidence 615 applies to expert witnesses. This ruling clarified that experts are not automatically exempt from sequestration and that parties must demonstrate why an expert’s presence in the courtroom is essential.
Importantly, Arizona amended Rule 615 effective January 1, 2024 to conform in part with the 2023 federal amendments. The rule’s structure and the requirement for a specific showing of necessity remain in place, confirming that Spring v. Bradford is still the guiding authority.
Rule 615, often called the “rule of exclusion,” requires the court, at a party’s request, to exclude witnesses from the courtroom so they cannot hear other testimony.
Yes. Experts are not automatically exempt. A party must show that the expert’s presence in court is essential to presenting the case.
Sometimes. Courts may allow an expert to remain if their presence is necessary for forming opinions or assisting attorneys, but the judge decides on a case-by-case basis.
In Spring v. Bradford (2017), the Court clarified that expert witnesses are not automatically exempt from exclusion and that attorneys must show why their presence is essential.
Rule 615 is often called the “rule of exclusion.” Both the federal and state versions aim to prevent witnesses from shaping their testimony based on what they hear in court. The rule works as follows:
A party who is a natural person.
An officer or employee of a party who has been designated as the party’s representative.
A person whose presence is shown to be essential to presenting the party’s case.
A person authorized by statute to be present.
A crime victim who wishes to be present (Arizona only).
The third exception is the most relevant to expert witnesses. It allows courts to permit an expert to remain in the courtroom if their presence is necessary to the attorney’s case strategy or their expert opinion.
The Arizona Supreme Court’s ruling in Spring v. Bradford, 241 Ariz. 455 (2017), clarified how Rule 615 applies to experts.
The Court also cautioned that once Rule 615 is invoked, parties may not provide prospective witnesses with transcripts of trial testimony. Remedies for violations depend on prejudice and circumstances, reinforcing the importance of careful compliance.
The decision in Spring v. Bradford continues to influence litigation in Arizona because it reinforces both fair trial principles and the unique role of experts.
For attorneys, this means preparation is crucial. A party seeking to keep an expert in the courtroom must present a clear argument as to why their presence is essential.
Arizona’s Rule 615 largely parallels, but does not fully mirror, the Federal Rule of Evidence 615. Arizona retains an additional crime-victim exception and only partly conformed to the 2023 federal amendments effective January 1, 2024. Federal courts consistently interpret the “essential presence” exception narrowly, requiring a specific showing of necessity. This means that Arizona’s approach is consistent with federal practice, and lawyers can look to federal case law for persuasive authority.
For example, federal courts have recognized that technical experts in complex litigation often qualify for the exception, but they emphasize that it is not automatic. Each case depends on its facts.
Why are witnesses usually excluded under Rule 615?
Witnesses are excluded to prevent them from tailoring their testimony after hearing others speak, ensuring credibility and fairness.
Are expert witnesses exempt from Rule 615?
No. Experts are not automatically exempt. A party must show that their presence is essential to the case.
What does “essential” mean under Rule 615?
It means that the expert’s presence is necessary for presenting the party’s claim or defense, such as by hearing other testimony or assisting counsel with technical issues.
Can an Arizona trial judge still exclude an expert?
Yes. Judges have discretion. If the presence of an expert could compromise fairness, the judge can exclude them despite a request to remain.
How should attorneys prepare for Rule 615 issues?
Attorneys should file pretrial motions, prepare experts for possible exclusion, and be ready to explain why the expert’s presence is or is not essential.
The Arizona Supreme Court’s ruling in Spring v. Bradford, 241 Ariz. 455 (2017), clarified how Rule 615 applies to experts.
The Court also cautioned that once Rule 615 is invoked, parties may not provide prospective witnesses with transcripts of trial testimony. Remedies for violations depend on prejudice and circumstances, reinforcing the importance of careful compliance.
The decision in Spring v. Bradford continues to influence litigation in Arizona because it reinforces both fair trial principles and the unique role of experts.
For attorneys, this means preparation is crucial. A party seeking to keep an expert in the courtroom must present a clear argument as to why their presence is essential.
Arizona’s Rule 615 largely parallels, but does not fully mirror, the Federal Rule of Evidence 615. Arizona retains an additional crime-victim exception and only partly conformed to the 2023 federal amendments effective January 1, 2024. Federal courts consistently interpret the “essential presence” exception narrowly, requiring a specific showing of necessity. This means that Arizona’s approach is consistent with federal practice, and lawyers can look to federal case law for persuasive authority.
For example, federal courts have recognized that technical experts in complex litigation often qualify for the exception, but they emphasize that it is not automatic. Each case depends on its facts.
Why are witnesses usually excluded under Rule 615?
Witnesses are excluded to prevent them from tailoring their testimony after hearing others speak, ensuring credibility and fairness.
Are expert witnesses exempt from Rule 615?
No. Experts are not automatically exempt. A party must show that their presence is essential to the case.
What does “essential” mean under Rule 615?
It means that the expert’s presence is necessary for presenting the party’s claim or defense, such as by hearing other testimony or assisting counsel with technical issues.
Can an Arizona trial judge still exclude an expert?
Yes. Judges have discretion. If the presence of an expert could compromise fairness, the judge can exclude them despite a request to remain.
How should attorneys prepare for Rule 615 issues?
Attorneys should file pretrial motions, prepare experts for possible exclusion, and be ready to explain why the expert’s presence is or is not essential.
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