May a Missouri lawyer jointly represent an injured passenger and a deceased driver's spouse against third parties after the passenger settled with the driver's insurer?

Plain-English summary

The lawyer represented a seriously injured minor passenger in litigation arising from a collision that killed the family-member driver. The driver's insurer paid its limits, and the lawyer dismissed the driver's estate. The driver's spouse then sought to intervene with a wrongful-death claim against the truck driver and trucking company, while the defense was expected to argue that the deceased driver was partly at fault.

Rule 4-1.7 ordinarily makes joint representation of a driver and passengers nonconsentable when a third party presents a valid fault claim against the driver. Competent representation of the passengers would require a claim against the driver, while loyalty to the driver would prevent it.

The prior settlement and dismissal changed the analysis. The opinion states that the spouse and minor might both seek to minimize the fault assigned to the deceased driver, materially aligning their interests. If the driver and the minor's next friend gave informed consent confirmed in writing, the conflict could be waived. If the clients' positions later diverged in a material, nonconsentable way, Rule 4-1.16 required the lawyer to withdraw from representing all parties.

In practice

Under this opinion, the earlier settlement and dismissal could turn an ordinarily nonconsentable driver-passenger conflict into a waivable one because the remaining clients shared an interest in minimizing the driver's fault. Consentability still depended on the lawyer reasonably believing competent and diligent representation of each client was possible and on the remaining requirements of Rule 4-1.7(b).

Common questions

Q: Is joint representation of a driver and passenger ordinarily consentable when the driver's fault is at issue?

A: No. The opinion states that it is ordinarily nonconsentable because the passenger's competent representation may require a claim against the driver while loyalty to the driver prevents that claim.

Q: Why could the conflict be waived on these facts?

A: The passenger had settled with and dismissed the driver's estate before the spouse sought representation, so the spouse and passenger could share an interest in minimizing fault attributed to the driver.

Q: What consent does Rule 4-1.7(b) require?

A: Each client must give informed consent confirmed in writing, and the lawyer must reasonably believe competent and diligent representation of each client is possible.

Q: What happens if the clients' positions later diverge?

A: If the divergence is material and nonconsentable, the opinion requires the lawyer to withdraw from representing all parties.

Background and rules framework

Rule 4-1.7(a) defines direct-adversity and material-limitation conflicts. Rule 4-1.7(b) permits some concurrent conflicts when the lawyer can provide competent and diligent representation, law does not prohibit the representation, the clients are not asserting claims against each other in the same litigation, and every affected client gives written confirmed informed consent. Rule 4-1.16 governs withdrawal if the joint representation can no longer continue.

Citations and references

Rules of Professional Conduct:

• Missouri Rule 4-1.7(a) and (b), Comments [15] and [29] (concurrent conflicts and consent)
• Missouri Rule 4-1.16 (withdrawal)

Other opinions cited:

• Missouri Informal Opinions 950246 and 940053: driver-passenger joint representation
• Missouri Informal Opinion 2021-04: withdrawal when joint clients' positions diverge

See also

• Nebraska Ethics Op. 10-05: Driver-Passenger Joint Representation
• Maine Ethics Op. 21: Passenger and Driver Representation
• Kentucky Ethics Op. E-290: Joint Representation in Divorce

Source

• Landing page: Missouri Informal Opinion 2026-01

Original opinion text

Reproduced from the official source for research purposes. The linked source is authoritative.

Question: Lawyer currently represents a minor, via a next-of-friend, who was a passenger in an automobile accident. The minor was riding with a family member when the accident occurred. A semi-truck passed the center line and struck the family’s car. The driver was killed in the accident and the minor suffered serious injuries. Lawyer filed suit against the driver’s estate, the truck driver, and the trucking company. Lawyer dismissed the driver’s estate from the lawsuit after the driver’s liability insurance paid the policy limits to the minor. Is it a waivable conflict of interest if Lawyer intervenes on behalf of driver’s spouse asserting a wrongful death claim in the minor’s lawsuit against the truck driver and the trucking company? Lawyer expects opposing counsel to assert that the driver was partially at fault for the accident by exceeding the speed limit.

Answer: Rule 4–1.7(a)(1) and (2) provide that a concurrent conflict exists if: (1) the representation of one client will be directly adverse to another client; or (2) there is a significant risk that the representation will be materially limited by the lawyer’s responsibilities to other clients. Rule 4–1.7(b) allows representation of clients with concurrent conflicts if: (1) the lawyer reasonably believes the lawyer will be able to provide competent and diligent representation to each affected client; (2) the representation is not prohibited by law; (3) the representation does not involve the assertion of a claim by one client against another client in the same litigation; and (4) each client gives informed consent, confirmed in writing.

In most scenarios, Rule 4–1.7(a)(1) and (2) prohibit joint representation of a driver and the driver’s passengers when a third-party tortfeasor brings a valid claim of fault against the driver. It is considered a nonconsentable conflict of interest. This is because the lawyer would not be able to provide competent representation to the passengers without asserting a claim against the driver thereby compromising the representation. The lawyer’s duty of loyalty to the driver. prevents the lawyer from making such claim. See Comment [15] to Rule 4–1.7 and Informal Opinion 950246.

The fact-scenario presented here is different in that the passenger has settled and dismissed passenger’s claim against the driver, before the driver’s spouse sought the Lawyer’s representation. As a result, the spouse’s interest and the minor/passenger’s interests may now be materially aligned, i.e., both the spouse and minor will want to minimize the level of fault attributed to the driver. If the driver and the next-of-friend are willing to give informed consent, confirmed in writing, to the representation, the conflict could be waived. See Informal Opinions 940053 and 950246. However, if at any point the clients’ positions diverge in a nonconsentable, material way, Lawyer will have to withdraw from representing all parties. See Rule 4–1.16, Comments [4] and [29] to Rule 4–1.7, and Informal Opinion 2021–04.