One hug. One dead co-worker. One workplace violence question for HR leaders

A case unfolding in the US is drawing attention well beyond the courtroom — raising pointed questions about what happens when obsessive workplace behaviour goes unchecked.

On the evening of July 31, Jonathon Langdon, a 20-year-old Costco employee in Issaquah, Wash., was killed after his motorcycle was allegedly struck by a vehicle driven by Tyler Sorensen, 22, a coworker at the same Costco. According to court documents, Sorensen had followed Langdon from the Costco parking lot after seeing him hug a female coworker, local news outlet KOMO News reported. Investigators allege the crash was intentional and Langdon was declared dead at the scene. Sorensen has been charged with second-degree murder and has pleaded not guilty. He is currently being held at the King County Jail in Seattle on $2 million bail.

What makes this case particularly relevant to HR leaders isn’t just the violence — it's the pattern that preceded it.

A boundary problem that went unaddressed

Court documents cited by KOMO News indicate that Peterson had previously told investigators she was not in a relationship with Sorensen and had "repeatedly asked him to give her space after he crossed boundaries as a friend." That detail — a worker asking a colleague to step back — is the kind of signal that must be taken seriously by managers and HR departments.

According to the Issaquah Police Department in a Facebook post, Sorensen returned to the scene approximately one hour after the crash with a family member, and during subsequent interviews "made statements acknowledging that he struck the victim's motorcycle while acting out of anger." In text messages obtained from Sorensen's phone, he wrote that his "blood is boiling" shortly before the collision, according to the Seattle Times.

Court documents also indicate that Sorensen told investigators he had texted friends in an attempt to calm himself before ultimately acting on his emotions — a documented window between agitation and action that, in a workplace context, represents the kind of escalation pattern harassment prevention frameworks are designed to surface early.

What the research says about workplace violence

Workplace violence doesn’t typically emerge without warning. The Canadian Centre for Occupational Health and Safety (CCOHS), a federal government body, publishes guidance on workplace violence warning signs that is widely used by Canadian HR practitioners. Its fact sheet on violence and harassment in the workplace identifies a cluster of behaviours that can precede violence — including an unreciprocated romantic obsession, escalating threats, excessive contact with a coworker, holding grudges, and a pattern of misinterpreting communications from colleagues. Critically, CCOHS advises that warning signs should always be read in context and that HR professionals should look for multiple signals and, in particular, signs of escalation — that is, behaviours that are intensifying over time rather than remaining static. HR teams are increasingly being asked to treat these signals the way safety teams treat near-misses: as data points that require a response, not a wait-and-see approach.

In Canada, employers have a duty under occupational health and safety legislation in every province to take reasonable precautions to protect workers from workplace violence — including violence that stems from interpersonal conflict between employees. That obligation extends to situations where a worker has made a complaint, however informal, about another employee's behaviour.

"Employers should at a minimum document and analyze factors that contribute to psychological risks," Luc-Alexandre LeBlanc, a lawyer at Littler in Montréal, said in a previous interview. "Employers should also detail power imbalances, customer-facing positions, or a situation of high conflict or stressful workplaces." LeBlanc added that organisations should also "identify examples of past incidents that have led to psychological or sexual harassment complaints" — treating historical conduct concerns as intelligence about where risk is concentrated, not simply as closed files.

HR leaders looking to strengthen their workplace harassment and violence prevention frameworks will find that the evidentiary standard for taking action is meaningfully lower than many organizations assume. A formal written complaint is not required for an employer's duty of care to be triggered.

The manager's role in early intervention

Issaquah Police Chief Steve Mylett, speaking after Sorensen's arrest, offered a caution that resonates as much in a corporate boardroom as it does in a criminal context. "Think about what you're doing before you do it," Mylett said, according to KOMO News. "Because the decision that you make today can impact so many lives, it will impact you for the rest of your life and many, many others."

For organizations and their HR teams, the professional analogue is equally direct. Managers must be equipped — through training, clear policy, and genuine psychological safety — to act when a worker raises a concern about a colleague's conduct, even when that concern is expressed informally or tentatively.

The Costco case illustrates how interpersonal dynamics in shift-based, high-volume workplaces can develop beneath formal reporting structures. In environments where workers share close physical space, common break areas, and rotating schedules, infatuation and fixation can develop quickly and escalate without detection.

Canadian organisations navigating complex workplace relationship and harassment issues are being urged by legal and HR advisors to conduct proactive audits of their internal complaint processes — not only to meet legislative requirements, but to ensure that workers who raise concerns are responded to in a timely and consistent manner.

Handling employee concerns

The Issaquah incident, while extreme, belongs to a category of workplace harm that HR leaders and their teams in Canada and globally are watching closely. Obsessive workplace behaviour — whether directed at a colleague, a supervisor, or a subordinate — can follow a recognizable trajectory. The intervention point is rarely the moment of crisis; it’s the moment a boundary is first named and crossed.

HR leaders should ensure that all managers understand their obligation to escalate concerns about interpersonal conduct, that workers know how to report discomfort without fear of retaliation, and that documented patterns of boundary violations are treated as material risk rather than interpersonal noise.

Risk identification can’t be treated as a one-time compliance exercise, according to LeBlanc. "As an organization evolves in time, so do operations, work arrangements, technologies, workforce compositions and so on," he said. "Psychological risks may also change." He suggested that organizations should "adopt a broad and proactive approach to preventing all sexual violence and risks that comes with that."

For HR executives building safer workplaces across Canada, this case is a difficult but instructive reminder that the line between a conduct concern and a safety emergency may be shorter than it appears.