What is Reasonable Care in PHS?

Reasonable Care: Definition and Workplace Impact

Reasonable Care is the degree of caution and concern for the safety of others that an ordinarily prudent and rational person would use in the same circumstances. In Psychological Health and Safety (PHS), this means that if a hazard—such as workplace bullying or chronic overwork—has Foreseeability, the employer must take active steps to address it (engaging both the Duty of Care and the Duty to Inquire).

In the event of an incident, regulatory bodies or health and safety inspectors will not simply ask if the event was stopped; they will ask: "Did the organization take every precaution reasonable in the circumstances to prevent it?"

How Reasonable Care Relates to the PHS Standard (CSA Z1003)

Under the CSA Z1003 National Standard, Reasonable Care is validated through a "balancing test." To meet the standard of being reasonably practicable, an employer must weigh the following factors:

Severity of Harm: The potential impact on an employee’s psychological integrity.
Likelihood: The frequency or duration of the stressor.
State of Knowledge: What the employer should reasonably know about the psychosocial hazard based on industry best practices and internal data points.
Availability of Controls: The existence of Elimination or Administrative Controls to mitigate the risk.
Proportionality: Ensuring the effort to mitigate the risk is commensurate with the level of hazard identified.

Why Reasonable Care Matters for Leaders & HR

Demonstrating Reasonable Care is the primary way to establish a Due Diligence defense. All mitigation efforts must be captured through documentation to provide evidence that the organization took appropriate action.

Operating through a PHS-informed lens provides HR with a framework to justify necessary investments. If a risk is identified, exercising Reasonable Care often requires a commitment to training, resource reallocation, or systemic adjustments within the PHS Integrated Management System (IMS).

iMindify PHS Expert Insight

This is where the shift from OHS to PHS is most tangible. In physical safety, Reasonable Care might mean providing a harness; in PHS, it means providing clear role expectations, manageable workloads, and a psychologically safe environment.

Reasonable Care Assessment: A Defensibility Audit

Use these questions to evaluate if your organization is meeting the threshold of Reasonable Care within your PHS-IMS.

1. The Knowledge & Foreseeability Audit “Do we have a centralized way to capture 'near-misses' or early warning signs of psychological distress (e.g., high turnover in one department or spikes in short-term disability)?” Action: If you know about a stressor, you have a duty to act. Documentation of these signals is the first step in proving you are monitoring for harm.

2. The Balancing Test for Mitigation “When a high-risk Psychosocial Hazard is identified, can we demonstrate that we considered Elimination or Administrative Controls before settling on lower-level 'resilience training'?” Action: Ensure your safety committee minutes reflect a discussion on why certain controls were chosen over others based on the "balancing test" factors.

3. The Evidence of Action (Due Diligence) “Can we produce a record of the specific steps taken to mitigate a known risk, even if those steps did not completely remove the hazard?” Action: Map every identified hazard in your registry to a specific action plan. Reasonable Care isn't about perfection; it’s about a documented, prudent response.

4. Leadership Competency “Are our supervisors equipped to exercise the Duty to Inquire when they see a change in behavior, and is that inquiry documented as part of our Reasonable Care process?” Action: Verify that "Yellow Zone" conversations are occurring and that leaders understand their role in the systemic PHS framework via programs like The Working Mind (TWM).

5. Resource Allocation & Proportionality “Is our PHS budget aligned with our highest-risk Psychosocial Hazards?” Action: Use your hazard assessment data to justify the "Proportionality" of your PHS investments. If the risk is high, the investment in controls must be equally robust to satisfy the Reasonable Care threshold.

Consult with iMindify on PHS-IMS Integration