Ontario Severance

Duty of Care — Ontario Employment Law

27 casesDecisions from 1912–2025

About Duty of Care

In Ontario employment law, a "duty of care" is a common law concept requiring individuals and organizations to take reasonable steps to prevent foreseeable harm to others. While many people associate workplace safety with statutory rules like the Occupational Health and Safety Act (OHSA) or the Workplace Safety and Insurance Act (WSIA), the legal concept of a duty of care often extends beyond physical safety into matters of financial and reputational harm.

In the modern workplace, a duty of care primarily surfaces in cases of negligence, such as negligent misrepresentation. For example, if an employer carelessly provides false information during the recruitment process—such as guaranteeing long-term job security for a project that lacks funding—they may breach their duty of care if the candidate relies on that information and suffers financial losses. Similarly, courts have examined this duty when employers administer pension plans or provide benefit details; if HR carelessly dispenses incorrect financial information that an employee relies upon to their detriment, a court may find a breach of the duty of care.

Another major area involving this concept is vicarious liability. If an employee acts negligently or carelessly, such as making defamatory statements on social media as part of their job, third parties will often try to hold the employer responsible, arguing the company breached a duty to properly supervise its staff. However, Ontario courts apply strict limits. For instance, judges have repeatedly ruled that corporate directors and officers do not typically owe a personal duty of care to protect employees from the consequences of their own workplace misconduct.

It is important not to confuse a duty of care with a "fiduciary duty." A duty of care simply requires a party to act carefully and reasonably to avoid causing negligence. A fiduciary duty, by contrast, is a much higher legal standard requiring a party to act strictly in someone else's best financial interests. Because establishing whether someone legally owed you a duty of care—and proving they failed to meet that standard—relies heavily on the exact nuances of your situation, securing professional legal guidance is highly recommended when trying to understand your options.

Frequently Asked Questions

What exactly does a "duty of care" mean in the workplace?

In legal terms, a duty of care is an obligation to act reasonably and avoid causing foreseeable harm to another person. In the workplace, this can mean taking reasonable steps to ensure that the information provided about a job, pension, or reference is accurate and not carelessly misleading.

Can I sue my employer for negligence if I get physically injured at work?

In most cases, no. Under Ontario's Workplace Safety and Insurance Act (WSIA), workers' compensation is generally a "no-fault" system that acts as a bar, preventing employees from suing their employers for physical injuries on the job. Consequently, true "duty of care" lawsuits in employment typically involve financial harm rather than physical injury.

Do company directors personally owe me a duty of care?

Generally, no. Ontario courts have established that corporate officers and directors do not normally owe a personal duty of care to employees, particularly regarding an employee's own actions or misconduct. Their legal duties are typically owed to the corporation itself.

What is the difference between a duty of care and a fiduciary duty?

A duty of care simply obligates someone to avoid causing harm through negligence or carelessness. A fiduciary duty is a much stricter standard that requires a person to act with absolute loyalty and exclusively in the best interests of another party.

Can an employer breach a duty of care before I even start a job?

Yes. During recruitment, employers owe candidates a duty of care not to make careless or negligent misrepresentations about a role. If they definitively promise a secure position that does not actually exist, and you quit your current job to take it, they may be liable for the resulting financial damage.

How long do I have to file a claim if I suffered financial harm due to workplace negligence?

Under the Ontario Limitations Act, you generally have two years from the date you discovered, or ought to have discovered, the harm caused by the breach of duty to initiate a legal claim.

When is it time to talk to an employment lawyer about employer negligence?

You should speak to a lawyer as soon as you realize you have suffered significant financial or reputational damage due to an employer's carelessly provided information, such as botched pension documents, a highly inaccurate professional reference, or a false recruitment promise.

Common Scenarios

  • A hiring manager carelessly promises a candidate that a new role comes with guaranteed multi-year funding; the candidate resigns from their current secure job, only to be dismissed two weeks later when the funding falls through.
  • A human resources administrator provides an employee with heavily miscalculated pension entitlement documents, prompting the worker to make detrimental retirement decisions based heavily on those incorrect numbers.
  • A former manager provides a highly inaccurate, hastily written, and factually wrong employment reference to a prospective employer, which directly costs the worker a lucrative job opportunity.
  • An employee posts severe, defamatory statements about a vendor on a corporate social media account, leading the vendor to pursue the brokerage to see if it breached a duty of care in supervising the agent.

What You Should Know

  • Always ask for important details—such as pension calculations, benefit promises, or unusual compensation structures—in writing, so you have a clear paper trail if the information turns out to be negligently calculated.
  • Preserve all pre-employment emails and offer letters; if you need to prove a company breached its duty of care through negligent misrepresentation, those early documents will be your core evidence.
  • Recognize that distinguishing between a standard duty of care and a more rigorous fiduciary duty can drastically alter a legal case, making a consultation with an Ontario employment lawyer a critical step before taking action.
  • Keep strict track of dates if you discover you have been financially harmed by careless information, as you only have a two-year window under Ontario law to pursue a civil claim for negligence.

Featured Cases

A. v. K.

2025 ONSC 5689 (CanLII) · 2025-10-28

Vicarious Liability for Employee Defamation

This is a procedural motion to strike claims in a tort action involving vicarious liability for employees' defamatory social media posts. The court addressed whether the brokerages owed a duty of care, were vicariously liable for the agents' conduct, and whether punitive damages could be awarded vicariously. The claim for punitive damages against the brokerages was struck as having no reasonable prospect of success.

defamation duty of care punitive damages vicarious liability

H. v. Mann Engineering Ltd.

2020 ONCA 808 (CanLII) · 2020-12-16

H. v. Mann Engineering: Negligence & Garnishment

This was an appeal to the Court of Appeal from a motion judge's summary judgment dismissing a former employee's negligence claim. The employee sued his former employer, alleging that its garnishment proceedings against him were conducted negligently and caused his new employer to fire him. The motion judge dismissed the claim after finding that the former employer owed no duty of care in these circumstances. The Court of Appeal dismissed the appeal, ruling that the adversarial relationship between a judgment creditor and debtor lacks the proximity required to establish a duty of care. The dismissal of the employee's action stands.

appeal duty of care garnishment negligence summary judgment

M.-T. v. Riverpark Place Retirement Residence

2018 ONSC 882 (CanLII) · 2018-02-06

A negligence action involving a duty of care and breach of duty within an employment context.

breach of duty duty of care employment law negligence

M. v Canada (Attorney General)

2018 ONSC 475 (CanLII) · 2018-01-22

Employer Duty of Care in Pension Admin

This is an interlocutory motion regarding a Rule 21.01(1)(a) application to determine legal questions concerning the employer's duty of care and fiduciary duty in providing pension-related information. The court addressed whether such legal determinations could be made at the interlocutory stage given that material facts regarding the alleged misrepresentations and the existence of a fiduciary relationship were disputed.

duty of care employment obligations fiduciary duties pensions

Psychological Association (Ontario) v M.

2016 ONSC 4528 (CanLII) · 2016-07-15

Corporate Duty to Employee: No Fiduciary Duty

This is a procedural ruling on a motion to strike pleadings in a dispute involving a corporation and its former employee. The court addressed whether corporate officers and directors owe a duty of care or fiduciary duty to an employee to protect them from their own misconduct. The court held that no such duty exists under statutory or common law, and struck the employee's counterclaim for contribution and indemnity.

corporate officers duty of care fiduciary duties former employee motion to strike

H. v. M. et al.

2013 ONSC 2104 (CanLII) · 2013-04-30

This is a procedural ruling on a motion to strike pleadings in a third-party claim arising from a union-management dispute. The court analyzed whether the union executives' claim for negligent misrepresentation and vicarious liability against the employer and counsel disclosed a reasonable cause of action, ultimately finding no duty of care or reasonable reliance.

duty of care negligent misrepresentation striking pleadings third party claim union management

S. v. Casco

2010 ONSC 2584 (CanLII) · 2010-05-14

Pension Waiver Validity & Negligent Misrepresentation

This is a judicial review or appeal concerning the validity of a pension waiver signed by an employee or spouse. The court addressed whether strict compliance with the Pension Benefits Act was required for the waiver and whether the employer owed a duty of care in explaining the waiver's implications. The decision applied tort principles, including contributory negligence, to determine the outcome of the claim.

contributory negligence duty of care negligent misrepresentation pension benefits waiver forms

A. v. Canadian Musical Reproduction Rights Agency Limited

2009 ONCA 399 (CanLII) · 2009-05-13

Negligent Supervision: Employer's Reasonable Conduct

This is an appeal from a trial decision in an employment-related negligence action where the employee claimed her employer's restructuring and performance management caused mental harm. The Court of Appeal addressed whether the employer owed a duty of care for negligent supervision and whether its actions in managing declining performance were reasonable. The court found no liability, noting the employer's conduct was reasonable and it lacked awareness of specific vulnerabilities.

duty of care mental harm negligent supervision reasonable conduct workplace safety

A. v. Ontario

2009 ONCA 374 (CanLII) · 2009-05-07

A. v. Ontario - SARS Nurses' Lawsuit Dismissed

This was an appeal to the Court of Appeal from a motion judge's decision refusing to strike out portions of the plaintiffs' amended statement of claim. The plaintiffs were nurses and their family members who sued Ontario for damages in negligence and for breach of s. 7 of the Charter after contracting SARS. The motion judge allowed the action to proceed in negligence and under the Charter. The Court of Appeal allowed the appeal, finding it plain and obvious that Ontario did not owe the plaintiffs a private law duty of care and that the Charter claim had no prospect of success.

charter rights duty of care negligence occupational health and safety public authorities protection act striking pleadings

C. v. Canac Kitchens

2008 ONCA 506 (CanLII) · 2008-06-24

C. v. Canac Kitchens: Tort Claims in Wrongful Dismissal

This is an appeal to the Court of Appeal from a motion judge's decision summarily dismissing several of a dismissed employee's tort claims. The employee sued his former employer, its parent company, and a private investigation firm for negligent investigation and intentional infliction of mental distress after he was mistakenly arrested and fired for theft. The motion judge dismissed the negligent investigation claim against all non-police defendants and the mental distress claim against the investigators and a human resources manager. The Court of Appeal allowed the appeal in part, finding that the private investigation firm could owe a duty of care to the employee because it performed a function analogous to public police. The Court also reinstated the intentional infliction of mental distress claims against the employer, parent company, HR manager, and investigators, ordering these claims to proceed to trial.

duty of care mental distress negligence torts wrongful dismissal

D. v. K.

2008 ONCA 452 (CanLII) · 2008-06-09

Employee Liability for Negligence: D. v. K.

This is an appeal to the Court of Appeal from a trial decision dismissing an employer's claim against an employee. The cottage owner appellant hired the 13-year-old respondent as a "boat boy". The respondent negligently caused a fire that destroyed a boathouse, and the appellant's insurer sought to recover the $285,000 loss through a subrogated claim. The trial judge dismissed the action, finding no duty of care. The Court of Appeal dismissed the appeal, holding that ordinary employees are generally not liable to indemnify their employers for ordinary negligence absent intentional wrongdoing or gross negligence.

damages duty of care employee liability employer liability independent contractor negligence tort claims

Brad-Jay Investments Ltd. v. S.

2005 CanLII 36464 (ON SC) · 2005-10-12

Employment Law: Duty of Care and Breach

An employment law case concerning the duty of care owed by an employer or employee and whether a breach occurred.

breach duty of care employment law negligence

H. (Guardian of) v. Sutton Group Incentive Realty Inc.

2002 CanLII 45019 (ON CA) · 2002-08-14

Employer Liability: Office Party Injury Appeal

This is an appeal from a trial decision involving an employee injured in a motor vehicle accident after leaving an office Christmas party with an unmonitored open bar. The appeal addresses whether the employer owed a duty of care to the intoxicated employee, issues of causation and expert evidence, and the trial judge's decision to discharge the jury.

causation duty of care employer liability negligence workplace injury

J. v. F.

2001 CanLII 2985 (ON CA) · 2001-06-28

J. v. F.: Employer Not Liable for Drunk Driving

This was an appeal to the Court of Appeal from a trial judgment holding an employer 30% liable for a motor vehicle accident caused by an intoxicated employee. The employee, F., was an alcoholic who had consumed alcohol before, during, and after his shift at the employer's plant, and later crashed into the plaintiff, J., while driving home. The trial judge found the employer liable based on a duty to provide a safe workplace and supervise problem employees. The Court of Appeal allowed the employer's appeal, holding that the employer owed no duty of care to members of the driving public for an employee's actions outside of work hours and away from the workplace. The action against the employer was dismissed.

defences duty of care employer liability negligence scope of employment torts vicarious liability

B. v. Willowdale A.M.C. et al.

1983 CanLII 1820 (ON CA) · 1983-02-22

Workplace Injury: Negligence and Duty of Care

This is a negligence action involving an employee injured during the course of employment. The case addresses the duty of care owed by the employer to the employee.

duty of care employee injury negligence workplace injury

H. et al. v. M. et al.; Royal Insurance Co. et al., Third Parties

1975 CanLII 643 (ON SC) · 1975-09-18

Workplace Injury: Employer Liability for Employee Transport

This case addresses whether an employer was negligent in providing unsafe transportation for employees and whether the employer is liable under the Workmen's Compensation Act for injuries sustained during transport to work. The court found no negligence in the mode of transport and denied liability under the Act due to the absence of negligence or vehicle defects.

duty of care employer liability negligence workers compensation workplace injury

M. v. B.

1941 CanLII 318 (ON SC) · 1941-05-14

Employer Liable for Unsafe Equipment

A personal injury case involving an employee who was injured when a fly-wheel of a portable sawing outfit burst due to excessive speed. The court addressed whether the defendant breached their duty of care by failing to ensure proper equipment and competent operation, and whether the plaintiff voluntarily assumed the risk of injury. The plaintiff was awarded $4,000 in damages for amputation of a leg, including expenses and loss of earning capacity.

duty of care employer liability independent contractor volenti non fit injuria workplace injury

H. v. B.

1928 CanLII 419 (ON SCAD) · 1928-01-16

Master's Duty for Workplace Safety: Farmhand Injury Case

This is a merits decision regarding a workplace injury claim where a farmhand sued his employer for negligence after being injured by an unsafe ladder. The Court of Appeal for Ontario addressed the master's non-delegable duty to ensure workplace equipment is safe and whether the employee was contributorily negligent. The court found the master liable and awarded damages for the employee's injuries.

damages duty of care master and servant negligence workplace injury

H. v. G. et al.

1923 CanLII 905 (ON SCAD) · 1923-01-24

Employer Duty to Protect Employee from Third-Party Assault

This is an appeal to the Court of Appeal for Ontario regarding a tort claim for assault and vicarious liability in the context of a master-servant relationship. The central issue was whether the employer owed a duty to protect the employee from an assault committed by a third party (the plaintiff's brother). The appeal was allowed and the action was dismissed with costs, as no precedent or clear duty of care was established.

duty of care employer liability master-servant vicarious liability workplace assault

Dominion Canners Ltd. v. C. et al.

1921 CanLII 17 (ON SCAD) · 1921-11-04

Workplace Illness: Negligence & Workers' Comp Bar

This is a negligence action brought by employees against their employer for contracting typhoid fever from contaminated drinking water supplied at the workplace. The Court of Appeal for Ontario reviewed the jury's finding that the employer breached its common law duty of care and statutory duties under the Public Health Act, and determined that the illness was not an 'accident' under the Workmen's Compensation Act. The court reviewed the damages awarded for medical expenses and loss of income.

damages duty of care negligence workers compensation workplace injury