A PMK deposition in California, short for “Person Most Knowledgeable” and sometimes called a PMQ, forces an organization to produce a witness who can speak for the entire entity on specific topics. Under Code of Civil Procedure § 2025.230, when you name a corporation, partnership, association, or government agency as a deponent, the organization must pick the people best qualified to testify about the subjects listed in your notice.1California Legislative Information. California Code of Civil Procedure 2025.230 The organization, not you, bears the burden of figuring out which employees hold the relevant knowledge.
Drafting the Deposition Notice
The notice must describe the examination topics with “reasonable particularity.”1California Legislative Information. California Code of Civil Procedure 2025.230 A topic like “all facts supporting defendant’s affirmative defenses” will not carry the freight. Effective categories look more like “the product design specifications in effect on the date of manufacture” or “the process for receiving and logging customer complaints between January 2023 and June 2024.” Each topic needs to be narrow enough that the entity can identify who has the relevant information and prepare that person accordingly.
A vague notice hands the entity grounds to object or to produce a witness who genuinely cannot cover an undefined subject. Overly granular notices create dozens of overlapping categories that waste time on all sides.
You can also require the organization to bring documents. Under § 2025.220, the notice may specify materials or categories of materials, including electronically stored information, that the deponent must produce.2California Legislative Information. California Code of Civil Procedure CCP 2025.220 Pairing document requests with topics lets you examine the witness with the organization’s own records in hand.
Minimum notice periods apply. For a party, the notice must be served at least 10 days before the deposition, with additional time when service is by mail. For a nonparty organization, the subpoena must be served at least 20 days in advance.
The Entity’s Duty to Designate and Prepare a Witness
Once the organization receives a valid PMK notice, it has an affirmative obligation to choose the right person and make that person ready. The statute requires production of one or more people “most qualified” to testify on the entity’s behalf about the noticed topics.1California Legislative Information. California Code of Civil Procedure 2025.230 Sending whoever is available that day does not satisfy the rule.
The designated witness does not need to have personally witnessed every event or handled every document. What matters is that they can testify about information “known or reasonably available” to the organization.1California Legislative Information. California Code of Civil Procedure 2025.230 That language creates a real preparation burden. The entity must investigate its own files, review relevant documents, interview employees with relevant knowledge, and synthesize all of that into the witness’s testimony. The witness speaks for the organization, not just from personal memory.
This preparation duty is what separates a PMK deposition from a standard individual deposition. An ordinary witness testifies to what they personally saw, heard, or did. A PMK witness is expected to deliver the entity’s collective knowledge even when it sits scattered across departments and personnel.
The Seven-Hour Limit Does Not Apply
California generally caps depositions at seven hours under Code of Civil Procedure § 2025.290. PMK depositions are exempt. Section 2025.290(b)(5) states that the seven-hour limit does not apply to “any deposition of a person who is designated as the most qualified person to be deposed under Section 2025.230.”3California Legislative Information. California Code of Civil Procedure CCP 2025.290 The breadth of institutional knowledge a witness may have to cover across multiple topics justifies the exemption.
One wrinkle: if the PMK witness also has personal knowledge relevant to the case, you can depose that same person in an individual capacity under a separate notice. The individual-capacity deposition is subject to the normal seven-hour cap.
Scope of Examination
Questioning at a PMK deposition is generally limited to the topics listed in the notice. That is the trade: you describe your topics with reasonable particularity, and the entity prepares a witness for those topics. Questions that wander outside the noticed categories may draw a valid objection, and the entity’s counsel can instruct the witness not to answer. Drafting precise, comprehensive topic descriptions at the front end is what protects your right to full examination on the day.
Objecting to a PMK Notice
If a notice arrives that is defective or overreaching, the clock is tight. Under Code of Civil Procedure § 2025.410, a party must serve written objections specifying the problem at least three calendar days before the scheduled deposition date.4California Legislative Information. California Code of Civil Procedure CCP 2025.410 An objection filed that close to the date must be personally served.
Failing to timely object waives most defects. If topics are overbroad, the date is inconvenient, or the notice does not comply with the Article 2 formatting requirements, raise the issue in writing before the three-day deadline or lose the argument.
The entity can also move to quash the notice entirely. That motion needs a meet-and-confer declaration showing an attempt to resolve the dispute informally. Filing the motion stays the deposition until the court rules.
Remedies When the Entity Fails to Comply
Noncompliance takes two main forms: the entity either fails to appear at all, or it sends a witness so unprepared that the deposition is effectively useless.
Nonappearance
If the designated witness simply does not show up and the entity has not served a valid objection, you can move for an order compelling attendance under Code of Civil Procedure § 2025.450.5California Legislative Information. California Code of Civil Procedure CCP 2025.450 The motion must include a meet-and-confer declaration or, if the deponent simply failed to appear, a declaration that you contacted the deponent to ask why.
Unprepared Witness
The more common scenario is a witness who appears but answers “I don’t know” to questions squarely within the noticed topics. The practical first step is to put the deficiency on the record, suspend the deposition, and meet and confer with opposing counsel. If that does not resolve things, file a motion to compel further testimony under § 2025.480.
The motion carries a hard deadline: it must be filed within 60 days after the deposition record is complete.6California Legislative Information. California Code of Civil Procedure 2025.480 Miss it and you may lose the right to compel. The motion also requires a meet-and-confer declaration and lodged transcript excerpts.
Sanctions
When a court grants a motion to compel, it typically orders the entity to produce a better-prepared witness and imposes monetary sanctions covering fees and costs wasted on the failed deposition and the motion.6California Legislative Information. California Code of Civil Procedure 2025.480 Heavier sanctions, including issue sanctions, evidence sanctions, or terminating sanctions, become available if the entity then disobeys the order compelling further deposition. At that stage, a court can bar the entity from introducing evidence on topics the witness failed to address, or in extreme cases strike the entity’s pleadings entirely. Contempt is also on the table for defying a compel order.
Using PMK Testimony at Trial
A PMK witness speaks on behalf of the organization, so the testimony can be used against the entity as a party admission. California Evidence Code § 1222 provides that a statement made by someone authorized to speak on a party’s behalf about the subject matter is not excluded by the hearsay rule.7California Legislative Information. California Evidence Code 1222 Because the entity designated the witness for those topics, the authorization element is baked into the process.
California practice adds a complication. While the witness must be prepared on the entity’s collective knowledge for the deposition itself, some California courts have held that the testimony may face hearsay or foundation challenges at trial if the witness lacks personal knowledge of the underlying facts. That creates a gap between what the witness is required to know at the deposition table and what the testimony can accomplish at trial. Key PMK admissions may need to be backed up with testimony from percipient witnesses or with documentary evidence when trial comes.
Discovery Cutoff
All of this has to happen inside California’s discovery window. Under Code of Civil Procedure § 2024.020, parties have the right to complete discovery no later than 30 days before the initial trial date, and discovery motions must be heard at least 15 days before trial.8California Legislative Information. California Code of Civil Procedure CCP 2024.020 A continuance of the trial date does not automatically reopen discovery. If a PMK deposition is needed late in the case, scheduling problems and meet-and-confer obligations can eat up weeks fast.
How This Differs From Federal Rule 30(b)(6)
California’s procedure is similar to the federal Rule 30(b)(6) deposition, but the differences matter. Federal Rule 30(b)(6) requires the serving party and the organization to “confer in good faith about the matters for examination” before or promptly after service of the notice or subpoena.9Cornell Law Institute. Federal Rules of Civil Procedure Rule 30 – Depositions by Oral Examination California has no equivalent pre-deposition conferral mandate in § 2025.230, though meet-and-confer duties apply at the motion-to-compel stage.
The bigger practical difference involves trial use. In federal court, a 30(b)(6) witness’s testimony is generally binding on the organization regardless of personal knowledge. In California, the personal-knowledge issue for trial admissibility means PMK testimony can face evidentiary challenges that would not arise in federal court. Practitioners handling cases in both systems should plan accordingly, particularly when deciding whether to rely on PMK testimony alone or to lock down percipient witness depositions as backup.