May a lawyer who is likely to be a necessary witness act as trial advocate or join arguments with the judge?

Plain-English summary

The lawyer was both plaintiff and co-counsel in litigation that might become a class action, and might be a necessary witness. The opinion says Rule 4-3.7 bars a likely necessary witness from acting as trial advocate unless one of its three exceptions applies.

The opinion treats participation in arguments, conferences with the judge, and other activity traditionally reserved for counsel as prohibited trial advocacy. It cautions against trial conduct that could confuse the trier of fact about the lawyer’s role as witness. The rule does not prohibit the lawyer from remaining attorney of record.

In practice

For this potential witness, the opinion separates attorney-of-record status from advocacy at trial. Its prohibition concerns trial argument, judge conferences, and similar attorney activity when the lawyer is likely a necessary witness and no exception applies.

Common questions

Q: Does attorney-of-record status itself violate Rule 4-3.7?

A: No. The opinion says the rule does not prohibit that status.

Q: May a necessary witness join arguments or conferences with the judge?

A: Not as trial advocate absent a Rule 4-3.7 exception. The opinion treats those activities as advocacy.

Q: Does the opinion decide whether any exception applies?

A: It frames the holding for a case where none of the rule’s three exceptions is present.

Background and rules framework

Rule 4-3.7 supplies the necessary-witness limit on trial advocacy and the three exceptions referenced by the opinion.

Citations and references

Missouri Rules of Professional Conduct:

• Rule 4-3.7

See also

• Missouri Informal Op. 2015-06: Firm Member as Witness
• Missouri Informal Op. 2023-04: Lawyer as Witness

Source

• Landing page: https://mo-legal-ethics.org/informal-opinion/2014-03/

Original opinion text

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

Question: Attorney is Plaintiff and co-counsel of record in a lawsuit that may become a class action, and Attorney may be a necessary witness at trial. May Attorney handle pre-trial matters, sit at counsel table during trial, and listen to arguments and conferences with the judge that are outside of the jury’s hearing?

Answer: If Attorney is likely to be a necessary witness, Rule 4–3.7 prohibits Attorney from acting as an advocate at trial where none of the three exceptions to the rule are present. Attorney should avoid any actions at trial that could mislead or confuse the trier of fact as to Attorney’s role as witness rather than advocate. Participating in arguments and in conferences with the judge or engaging in other trial activity traditionally reserved for attorneys would constitute advocacy prohibited by Rule 4–3.7. The rule does not prohibit Attorney from being an attorney of record in the case.