There has been a quiet but unmistakable shift in Canadian workplaces — one that many employers do not fully grasp until it is too late. Employee mental health is no longer a peripheral concern confined to cases of harassment or abuse. Increasingly, it sits at the centre of workplace litigation. Claims rooted in psychological harm are emerging not from shocking misconduct but from the ordinary frictions of work: strained reporting relationships, clumsily handled performance reviews and, particularly, workplace investigations that drag on without clarity or resolution.
What employers once dismissed as routine workplace stress is now forming the backbone of constructive dismissal claims, human rights applications and occupational health and safety complaints. The legal exposure is not coming from a single direction. It is converging.
Courts Scrutinizing Employer Conduct
More than ever, courts are willing to scrutinize not only what employers do, but how they do it. A heavy-handed disciplinary approach, public criticism or an abrupt and insensitive termination can ground findings of bad faith. Where those actions are tied to demonstrable psychological harm, damages may extend well beyond reasonable notice or severance into aggravated, moral and punitive damages.
Overlay that with human rights legislation, where mental health conditions are firmly recognized as disabilities, and the duty to accommodate to the point of undue hardship is triggered — a duty far easier to state than to apply. Mental health issues are rarely obvious and often disclosed incrementally. An employee may first present as underperforming or frequently absent with no immediate indication of an underlying medical issue. By the time disclosure occurs, decisions may already have been made that are difficult, if not impossible, to reverse.
Recognizing the Duty to Accommodate
The real risk for employers is not simply failing to accommodate but failing to recognize when the duty to accommodate has been triggered at all. This blind spot can lead to costly litigation and significant liability.
Workplace Investigations as a Pressure Point
Workplace investigations present another growing pressure point. Allegations of harassment increasingly include claims of psychological harm or toxic environments. Employers are legally obligated to investigate, yet the process itself has become a source of harm. Delays, poor communication, perceived bias and obviously predetermined results by investigators exacerbate the very issues the investigation is meant to address.
It is not uncommon for employees on both sides of a complaint to report deteriorating mental health as an investigation unfolds. And investigators are often just hired guns for the employer with the mission to find cause to terminate and develop evidence to do so. Workplace investigations have become a major boondoggle of employment law. They are often bad faith incarnate and something from which no subject employee ever returns. Without legal representation, investigated employees are simply sitting ducks.
Employers must recognize that mental health concerns are now at the core of workplace litigation. Proactive measures, including proper training, clear policies, and fair investigation processes, are essential to mitigate risk.



