Disclaimer: This article is for educational purposes only. It does not provide legal advice, does not establish an attorney-client relationship, and should not be relied on for legal decisions. Always consult a licensed attorney regarding your specific case.
On August 5, 2023, the ABA Standing Committee on Ethics and Professional Responsibility issued Formal Opinion 508 — the first comprehensive national guidance on witness preparation since the pandemic-era shift to remote proceedings. For PI attorneys whose practice depends on putting clients into recorded testimony, Opinion 508 is now the document against which an opposing party's allegation of coaching, sanctions motion, or bar grievance will be measured.
The opinion does not break new ground in any doctrinal sense. Model Rule 3.4(b) has prohibited counseling false testimony since long before Zoom. What Opinion 508 does is catalog — explicitly and in unusual detail — the conduct that lies on each side of the line, including the new categories of conduct that the remote-deposition era invented. That catalog is what attorneys, ethics boards, and trial judges now reach for first.
This article is for PI attorneys who already understand Rule 3.4 in the abstract and want a practical read on what Opinion 508 changes about how preparation is conducted, documented, and defended.
What the Opinion Actually Says
Opinion 508 starts from the conventional premise: a lawyer has concurrent duties to diligently and competently represent the client and to refrain from improperly influencing witnesses. The challenge — and the reason the opinion exists — is that the second duty resists bright-line definition. The committee notes that the distinction between legitimate preparation and what it variously calls "coaching, horseshedding, woodshedding, or sandpapering" can be ambiguous, particularly under the time pressures of modern litigation.
What the opinion adds is two enumerated lists.
Permissible preparation, per the opinion, includes: reminding the witness they will be under oath; explaining case strategy and procedure; identifying anticipated testimony from other witnesses; reviewing documents and physical evidence with the witness; identifying likely lines of cross-examination; suggesting word choices that more accurately convey the witness's actual meaning; advising the witness to wait until a question is completely asked before answering; emphasizing the importance of remaining calm and composed; advising the witness to testify only about what they actually know and not to guess or speculate; and instructing the witness to answer the question asked and avoid volunteering information.
Impermissible coaching, per the opinion, includes: counseling false testimony; assisting a witness in offering false testimony; advising a witness or client to disobey a court order regulating discovery; offering an unlawful inducement to a witness; procuring a witness's absence from a proceeding; and — the post-2020 addition — using remote-communication platforms or other technologies to surreptitiously signal a witness during testimony.
Most experienced PI attorneys read both lists and recognize that nothing on either is genuinely surprising. What changes is the clarity. The opinion is now the document a sanctions motion will quote.
The Permissible-Preparation List Read Closely
Several items on the permissible list reward careful reading because the boundary lies inside the item, not at its edge.
"Suggesting word choices that more accurately convey the witness's actual meaning." This is the formulation that has launched a thousand sanctions disputes. The opinion permits suggesting a word that better captures what the witness means. It does not permit suggesting a word that changes what the witness knows. The distinction is real but is rarely possible to prove from a transcript alone. The defensible practice is to spend the bulk of preparation time exploring what the witness actually remembers, not refining how they say it. When word-choice suggestions are made, they should be made in a way that elicits the witness's reaction — does this match what you remember? — rather than substituted as a rote correction.
"Identifying anticipated testimony from other witnesses." Permissible, but the use to which that information is put matters. Telling a witness "the defendant's expert will testify that the impact was below 5 mph" is legitimate framing. Telling that same witness "so when you're asked about the speed, remember it felt like a hard hit" begins to cross into shaping recollection. The opinion's silence on the second formulation is not an endorsement.
"Reviewing documents and physical evidence with the witness." This is universally permitted, but the documents that get reviewed often shape the testimony that follows in ways that the witness does not consciously track. The discipline is to review documents the witness has personally seen or used, not documents that introduce facts they would not otherwise know.
The Remote-Deposition Additions
The post-COVID portion of Opinion 508 is where the substantive guidance is freshest. The committee specifically notes that remote-communication platforms provide "opportunities and temptations for lawyers to surreptitiously tell or signal witnesses what to say or not say in the proceedings of a tribunal." It cites circumstances in which lawyers have coached witnesses via text messages during testimony and through off-camera communications in real time.
The implications for how PI attorneys conduct depositions — both as the defending attorney and the questioning attorney — are concrete:
For defending counsel. The opinion effectively requires that defending counsel ensure the witness is alone in the room, that no one off-camera is communicating with the witness, and that any text-message or chat channel between counsel and witness is closed during testimony. Some attorneys now stipulate to these conditions on the record at the start of the deposition; others handle it through pre-deposition agreement. The key is that the conditions exist and are documentable. The defending attorney whose witness is later shown to have been receiving texts during testimony cannot rely on Opinion 508 to argue that the practice was once tolerated.
For questioning counsel. Opinion 508 elevates the importance of identity verification, room verification, and break protocols. Asking the witness on the record at the start whether anyone else is in the room, whether any other device is open, and what communications they will or will not have during breaks is now standard. Some questioning attorneys ask for an identification check and a room-sweep on camera. The opinion does not require these specific practices, but it does establish a baseline for what reasonable questioning attorneys are now expected to confirm.
Hall v. Clifton Precision Hasn't Gone Away
Practitioners have cited Hall v. Clifton Precision Products Co., 150 F.R.D. 525 (E.D. Pa. 1993) — Judge Gawthrop's well-known ruling on attorney conduct during depositions — for thirty years. Opinion 508 does not displace it. Within the Eastern District of Pennsylvania and the jurisdictions that have followed it, Hall remains the operative authority on the conduct that constitutes impermissible coaching during testimony: no off-the-record conferences during a question, no instructions not to answer outside of privilege, and no behavior that interrupts or distorts the witness's testimony.
What Opinion 508 adds to the Hall framework is the modern technological context. Hall contemplated in-person depositions where the relevant conduct — the conference, the instruction — happened in the conference room. Opinion 508 extends the same logic to text channels, audio cues, off-camera persons, and document-sharing tools.
For practical purposes, the safest mental model is: anything that would have been improper if the witness's spouse were whispering it into their ear in 1993 is also improper if a co-counsel is texting it in 2026.
What Opinion 508 Does Not Resolve
Opinion 508 is a useful catalog, but it leaves several practitioner-relevant questions open.
The Reptile-materials disclosure question. Some courts have ordered disclosure of plaintiff's preparation materials based on theories of waiver. Opinion 508 does not address whether the existence of such materials is itself a problem, only the content of the preparation conducted.
The witness-preparation transcript problem. The opinion does not address whether preparation sessions should be recorded, transcribed, or memorialized. Some practitioners maintain detailed prep notes as protection; others minimize them as discovery exposure. The opinion is silent on which approach is correct.
The mock deposition question. Mock depositions, in which the attorney runs the witness through a simulated examination, are not addressed directly. They are presumably permissible — they fall within "identifying likely lines of cross-examination" — but their boundaries are not catalogued.
The "softening" question. Whether and how an attorney may help a client communicate the same factual content in a more sympathetic register without changing the underlying content is the murkiest area of all. Opinion 508 acknowledges that word-choice suggestions are permissible but does not address the broader project of helping a witness present their actual recollection in a way that lands more effectively. This is where most modern preparation practice operates and where most sanctions risk lives.
Operational Implications
For PI firms, the operational read on Opinion 508 is less about what to change and more about what to document. The deposition prep workflow that survives a future motion or grievance looks something like this:
- Preparation sessions are conducted in two or more sittings, separated by at least a day, so that the witness can metabolize the material rather than parroting it from short-term memory. This is also what most experienced trial advocacy programs have taught for thirty years.
- Documents reviewed during preparation are limited to materials the witness has personally seen or used. Where the witness needs context from other documents, that context is provided as background, not as material the witness is expected to refer to.
- For remote depositions, defending counsel confirms in writing that the witness will be alone, off-camera devices will be powered down, and no chat or text channel between counsel and witness will be active during testimony.
- Time spent in preparation is documented in the file, both to support recoverable-cost analysis at the close of the case and to demonstrate that the preparation was time-intensive and educational rather than rote and scripted.
The last point matters more than it sounds. A preparation record that shows thoughtful, time-intensive work — document review, mock examination, discussion of demeanor — is qualitatively different from one that shows a single thirty-minute meeting. The opinion does not require any particular quantity of preparation time, but the body of trial-court rulings around alleged coaching consistently distinguishes between firms that invest in preparation and firms that don't.
Frequently Asked Questions
Does Opinion 508 apply to non-litigation witness preparation?
The opinion is framed around proceedings before a tribunal, which encompasses depositions, court appearances, and arbitral hearings. It does not directly address preparation of witnesses for administrative interviews, mediations, or transactional matters, though much of its reasoning would apply by analogy.
Is recording a preparation session protected by work-product doctrine?
This is jurisdiction-dependent and turns on whether the recording is treated as the attorney's mental impressions (core work product) or as a memorialization of a non-privileged conversation. The cases are mixed enough that most firms either record everything and treat the recordings as protected, or record nothing and document only outcomes.
What is the consequence of an Opinion 508 violation?
Opinion 508 itself is advisory; it has no direct enforcement mechanism. Its practical consequence is that it now informs how courts and disciplinary authorities interpret the underlying Model Rules — Rule 3.4(b) on fairness to opposing parties, Rule 1.2(d) on counseling crime or fraud, Rule 8.4(c) on dishonesty — and the analogous state rules. A finding of impermissible coaching can result in evidentiary sanctions, fee-shifting, disqualification in egregious cases, or bar grievance.
Does Opinion 508 affect cross-examination at trial?
Indirectly. The opinion is most often invoked in sanctions motions during or after deposition, but its standards have begun to appear in cross-examination of witnesses about how they were prepared. Questions about preparation time, who attended preparation sessions, and what materials were reviewed are now more common and harder to object to as work-product than they once were.
Closing
Opinion 508 is a useful, careful document, but the working practitioner's takeaway is not in its specific items. It is in the implicit standard the opinion sets: preparation that is time-intensive, document-driven, and focused on developing the witness's actual understanding of actual facts is the practice the rules contemplate. Preparation that is rapid, script-driven, or focused on shaping the witness's word choice and demeanor without engaging their substantive recollection is the practice that triggers scrutiny.
The firms that invest in the former rarely have to defend the latter.
For PI attorneys, the most defensible deposition prep is the one in which the time invested, the documents reviewed, and the topics covered would withstand cross-examination as readily as the witness's testimony itself.