Professional Civility and Disciplinary Costs
Professional Civility and Disciplinary Costs
Court: Ontario Superior Court of Justice, Divisional Court, Canada
Issue: Resolute Advocacy and Professional Misconduct
Citation: Guiste v. Law Society of Ontario, 2026 ONSC 4419 (CanLII)

In a July 30, 2026, decision, the Ontario Superior Court of Justice, Divisional Court, Canada, considered resolute advocacy and professional misconduct.
Ernest Guiste, an Ontario lawyer who represented clients in criminal, civil, and other proceedings, faced professional misconduct allegations arising from his conduct during two unrelated criminal trials between 2013 and 2015. The Law Society of Ontario alleged that Guiste engaged in uncivil conduct toward opposing counsel and the courts, failed to competently represent a client, and failed to act with integrity.
Guiste maintained that his actions were necessary to protect his clients’ interests, including raising concerns about racial discrimination, prosecutorial misconduct, and abuse of process. The Law Society Tribunal’s Hearing Division found professional misconduct and imposed a three-month suspension and $225,000 in costs. The Tribunal’s Appeal Division upheld those determinations.
Guiste appealed to the Divisional Court, challenging the misconduct findings, the disciplinary penalty, and the costs award.
The Court considered the relationship between a lawyer’s obligation to advocate vigorously for clients and the professional duty to maintain civility, integrity, and competence.
Relying on Groia v. Law Society of Upper Canada, 2018 SCC 27, the Court recognized that lawyers must have sufficient latitude to advance their clients’ interests, including making allegations of prosecutorial misconduct when reasonably grounded in the record and advanced in good faith. However, resolute advocacy does not authorize personal attacks, unsupported allegations, or unnecessarily disruptive courtroom conduct. The Court concluded that the Tribunal appropriately distinguished legitimate advocacy from professional misconduct and did not improperly restrict Guiste’s ability to represent his clients.
Guiste argued that the Tribunal failed to appreciate the racial context of his clients’ cases and the need to challenge potentially discriminatory conduct.
The Court acknowledged that racial discrimination, including unconscious bias, can be difficult to establish through direct evidence. Citing R. v. Dudhi, 2019 ONCA 665, it recognized that racial considerations need not be the sole or dominant motivation behind improper conduct to be legally relevant.
Nevertheless, allegations of racism or prosecutorial misconduct must have a reasonable foundation and be pursued in a professionally appropriate manner. The Court found no reversible error in the Tribunal’s assessment of Guiste’s conduct.
In a majority decision, Justices Matheson and Brownstone upheld the three-month suspension, finding no basis to interfere with the Tribunal’s disciplinary determination.
The majority also upheld the $225,000 costs award as reasonable. It found that the amount reflected the hearing’s length and complexity and the defense’s conduct, and emphasized that vexatious or meritless conduct that unnecessarily prolongs a disciplinary proceeding justifies significant cost recovery by the Law Society. The majority rejected Guiste’s claims of financial hardship and illness because he did not provide documentation to support them.
Justice Schreck dissented on the costs issue, concluding that the Hearing Division made an error that produced an award that was “excessive, unreasonable and effectively punitive.”
Appeal dismissed.