Ontario Severance

Workplace Health and Safety — Ontario Employment Law

22 casesDecisions from 1912–2025

About Workplace Health and Safety

In Ontario, your right to a safe and healthy workplace is not just a good idea—it's the law. The cornerstone of this protection is the Occupational Health and Safety Act (OHSA), a comprehensive piece of legislation that outlines the duties of employers, supervisors, and workers. The OHSA is built on the principle of the 'internal responsibility system,' which means that everyone in the workplace has a role to play in ensuring safety. Employers have the primary duty to take every precaution reasonable in the circumstances to protect a worker. This includes providing information and instruction about hazards, ensuring equipment is in good condition, and maintaining safe work environments.

For workers, the OHSA grants three fundamental rights. First is the 'Right to Know' about any potential hazards you may face on the job. Second is the 'Right to Participate' in the health and safety process, often through a workplace Joint Health and Safety Committee (JHSC). Third, and perhaps most critically, is the 'Right to Refuse' work that you believe is unsafe for you or a coworker. This right is protected, and an employer cannot legally discipline, fire, or otherwise penalize you for exercising it in good faith. This is known as a 'reprisal,' and it is strictly prohibited.

It's important to understand that 'health and safety' under the OHSA extends beyond physical dangers like faulty machinery or chemical exposure. It also explicitly includes workplace violence and harassment, which are considered workplace hazards. Employers are legally required to have policies and programs in place to address these issues. If you find yourself in a situation where your safety concerns are being ignored, leading to significant negative changes in your job or even dismissal, the circumstances can become quite complex, potentially involving multiple areas of employment law. Understanding your specific rights and the correct procedures to follow is crucial, and reviewing your unique situation with a legal professional can provide essential clarity.

Frequently Asked Questions

What is the main law that protects my health and safety at work in Ontario?

The primary law is the Occupational Health and Safety Act (OHSA). It sets out the rights and duties of all parties in the workplace to ensure a safe environment.

What should I do first if I believe my work is unsafe?

You should immediately report your concern to your supervisor or employer. If the issue is not resolved and you still believe the work is unsafe, you have the right to refuse work by following the specific process outlined in the OHSA.

Can my boss fire me for reporting a safety issue or refusing unsafe work?

No. The OHSA prohibits employers from carrying out a 'reprisal' against a worker for following the law. This means they cannot dismiss, discipline, intimidate, or penalize you for exercising your health and safety rights.

Does workplace health and safety cover issues like bullying or psychological stress?

Yes, to an extent. The OHSA defines workplace harassment, which can include bullying, as a workplace hazard. Employers are required to develop and maintain programs to address it, which contributes to psychological safety.

Is there a time limit to file a complaint if I'm punished for raising a safety concern?

Yes, there are strict deadlines. If you believe you have been subject to a reprisal, you must file a complaint with the Ontario Labour Relations Board. Seeking legal advice quickly is important to ensure you don't miss these critical timelines.

What is a Joint Health and Safety Committee (JHSC)?

A JHSC is a committee of worker and management representatives who meet regularly to identify workplace hazards and make recommendations for improvement. In Ontario, most workplaces with 20 or more employees are required to have one.

My employer ignores all safety rules and I'm worried I'll be fired if I speak up. When is it time to get legal advice?

If you are in a situation where raising legitimate safety concerns puts your job at risk, or if you have already faced negative consequences, it's a critical time to consult with an employment lawyer. They can advise you on how to exercise your right to refuse unsafe work and protect yourself from illegal reprisals.

Common Scenarios

  • A warehouse worker is asked to operate a forklift that has not been properly maintained and has faulty brakes.
  • An office administrator is subjected to persistent verbal abuse from a manager, causing significant anxiety, but their complaints to HR are dismissed.
  • A roofer is told to work without proper fall protection equipment on a high-pitched roof, directly violating OHSA regulations.
  • After a retail employee reports a recurring electrical hazard to their supervisor, their hours are suddenly and drastically cut without explanation.
  • A lab technician is not given adequate training or personal protective equipment (PPE) before being instructed to handle a new, potentially hazardous substance.

What You Should Know

  • Document every safety concern in writing. Keep a personal record of dates, times, the specific hazard, who you reported it to, and their exact response.
  • Familiarize yourself with the formal work refusal process under the OHSA. Following the correct steps is essential to protect your rights and your job.
  • Do not quit your job in response to an unsafe condition without first attempting a work refusal and seeking legal advice, as resigning can affect your legal options.
  • If you have been disciplined or terminated after raising a health and safety issue, contact an employment lawyer immediately to assess whether you have grounds for a reprisal complaint.
  • Know who your Joint Health and Safety Committee (JHSC) representatives are. They can be a valuable resource for raising concerns and promoting a safer workplace.

Featured Cases

Ontario (Ministry of Labour, Training and Skills Development) v. New Leaf

2025 ONCJ 333 (CanLII) · 2025-06-16

OHSA Sentencing: Worker Fatality & Corporate Liability

This is a sentencing decision regarding charges under the Occupational Health and Safety Act (OHSA) following a worker fatality. The court addressed the liability of both a non-profit corporation and an individual supervisor for failing to take reasonable precautions, applying sentencing principles of deterrence and proportionality while considering aggravating and mitigating factors. The court also ruled that it lacked jurisdiction to order restitution or direct fines to the deceased worker's family.

corporate liability ohsa sentencing worker fatality workplace health and safety

Ontario (Labour, Immigration, Training and Skills Development) v. B.

2025 ONCA 426 (CanLII) · 2025-06-09

This is an appeal for leave to appeal a directed verdict of acquittal granted at trial in a prosecution under the Occupational Health and Safety Act. The Crown seeks to challenge the trial justice's application of the directed verdict test and the interpretation of worker obligations, specifically regarding the scope of responsibilities under s. 28(1)(a) and the relevance of private contracts and due diligence.

directed verdict ohsa statutory interpretation worker obligations workplace health and safety

R. v. 1222149 Ontario Ltd. (Dairy Queen and/or Embrun DQ Grill & Chill)

2024 ONCA 543 (CanLII) · 2024-07-08

Corporate OHSA Sentencing Appeal: $40,000 Fine

This is an appeal from a sentencing decision against a corporation for Occupational Health and Safety Act violations. The Court of Appeal allowed the appeal, finding that the sentencing judge erred by relying on individual sentencing precedents without proper analysis of corporate sentencing principles and by restricting the assessment to the local operation. The court set a new fine of $40,000 plus a victim fine surcharge.

appeal allowed corporate sentencing fines ohsa workplace health and safety

Ontario (Ministry of Labour, Immigration, Training and Skills Development) v. Cementation Canada Inc.

2024 ONCJ 246 (CanLII) · 2024-04-30

OHSA Prosecution: Charter Motion Dismissed

This is a pre-trial Charter motion in a prosecution brought by the Ministry of Labour against Cementation Canada Inc. for alleged breaches of the Occupational Health and Safety Act and mining regulations. The court dismissed the motion for a stay of proceedings, finding that the charges were sufficiently particularized and that there was no breach of the defendant's Charter rights regarding disclosure or solicitor-client privilege.

charter rights disclosure regulatory prosecutions stay of proceedings workplace health and safety

Ontario (Ministry of Labour, Immigration, Training and Skills Development) v. Limen Group Const. (2019) Ltd.

2024 ONCJ 154 (CanLII) · 2024-03-21

OHSA Sentencing: Corporate Fine for Workplace Fatality

This is a sentencing decision regarding convictions under the Occupational Health and Safety Act for a workplace fatality where a worker was crushed by an improperly rigged concrete block. The court imposed corporate and individual fines on the employer and supervisors, applying the Cotton Felt factors and emphasizing general deterrence as paramount.

corporate offenders general deterrence ohsa sentencing workplace health and safety

H. v. Manulife Financial Corporation

2022 ONSC 2350 (CanLII) · 2022-04-19

A procedural ruling in a lawsuit involving workplace health and safety and the Occupational Health and Safety Act. The court addressed motions for leave to bring further affidavits, amend pleadings to increase damages, and compel compliance with undertakings regarding expert evidence and Joint Health and Safety Committee documents.

amendments civil procedure expert evidence ohsa workplace health and safety

Ontario Nurses Association v. Eatonville/Henley Place

2020 ONSC 2467 (CanLII) · 2020-04-23

Nurses Injunction: PPE & Safety in Long-Term Care

This is an interlocutory proceeding where the Ontario Nurses Association sought an injunction to enforce compliance with public health directives regarding personal protective equipment (PPE) in long-term care homes. The court addressed whether the precautionary principle applied to ensure worker safety and whether it could intervene in labour disputes to expedite resolution of urgent health and safety concerns under the Health Protection and Promotion Act and Labour Relations Act.

interlocutory injunction labour dispute ppe compliance workplace health and safety

R. v V.K.

2015 ONSC 3639 (CanLII) · 2015-06-26

This is a criminal prosecution of a supervisor for workplace health and safety violations resulting in worker deaths and injuries. The court addressed whether the accused breached legal duties under s. 217.1 of the Criminal Code and the Occupational Health and Safety Act by failing to ensure proper fall arrest systems, and whether criminal negligence under s. 219 was established. The court found that the accused's omissions constituted a marked and substantial departure from reasonable conduct and were a significant contributing cause to the harm, with intervening acts insufficient to sever causation.

causation criminal negligence ohsa supervisor liability workplace health and safety

Ontario (Labour) v. Flex-N-Gate Canada Company

2014 ONCA 53 (CanLII) · 2014-01-23

OHSA Sentencing: Concurrent Fines & Mitigation

This is an appeal from a sentencing decision in a workplace health and safety prosecution under the Occupational Health and Safety Act. The Court of Appeal addressed whether an employer's compliance with inspector orders could mitigate sentencing and whether concurrent fines could be imposed for two separate offences, ultimately ruling that compliance is not a mitigating factor and the court lacks jurisdiction to impose concurrent fines.

concurrent fines employer liability ohsa sentencing workplace health and safety

R. v. 733515 Ontario Inc. (Triad Exterior Contracting Specialists)

2009 ONCA 29 (CanLII) · 2009-01-14

Workplace Safety: Due Diligence Appeal Dismissed

This is an appeal by a private corporation against a conviction for workplace health and safety infractions. The Court of Appeal for Ontario addressed whether the appellant discharged its due diligence obligation and whether the sentencing decision contained legal error, ultimately finding no error in the lower court's assessment of evidence or imposition of sentence.

criminal conviction due diligence sentencing workplace health and safety

D. v. Ontario Power Generation Inc.

2007 CanLII 49486 (ON SC) · 2007-11-16

Constructive Dismissal: 24-Month Notice Awarded in Ontario Case

A constructive dismissal case where the plaintiff alleged that changes to compensation, job responsibilities, and reporting structure constituted constructive dismissal. The court applied the Farber test and found the cumulative effect of the changes to be a constructive dismissal. The plaintiff was awarded 24 months’ notice, with damages reduced by income earned during the notice period, resulting in a total award of $698,287.00.

constructive dismissal duty to mitigate employment contract payment in lieu of notice workplace health and safety

R. v. Dofasco Inc.

2007 ONCA 769 (CanLII) · 2007-11-09

R. v. Dofasco: Employer Liability for Machine Guarding

This was an appeal to the Court of Appeal from a judge's decision affirming an employer's acquittal for workplace safety violations. The Ministry of Labour appealed the acquittal of Dofasco Inc. after a worker was injured on a steel mill lacking a physical guard. The lower courts decided that the employer's alternate safety procedures and the worker's deliberate failure to follow them meant a physical guard was unnecessary. The Court of Appeal allowed the appeal and entered a conviction, ruling that safety procedures cannot replace a physical guard and that worker misconduct is no defence. The matter was remitted to the justice of the peace for sentencing.

due diligence employer obligations machine guarding strict liability workplace health and safety

R. v. Ontario Labour Relations Board

2006 CanLII 23945 (ON SCDC) · 2006-06-29

Judicial Review: Unlawful Reprisal Under OHSA

This is a judicial review application concerning an employee's claim of unlawful reprisal under the Occupational Health and Safety Act following suspensions related to work refusals. The Divisional Court upheld the Ontario Labour Relations Board's findings that there was no anti-safety animus, determining the Board's decision was not patently unreasonable. The application for judicial review was dismissed, and costs were awarded to the respondent employer.

judicial review labour relations board ohsa unlawful reprisal workplace health and safety

O. v. Greenspoon Brothers Ltd.

1979 CanLII 1955 (ON SC) · 1979-08-03

Workplace Injury: Exclusive Jurisdiction of Compensation Board

This is a procedural ruling regarding a stay of proceedings in a workplace injury context. The court addressed whether the Workmen's Compensation Board has exclusive jurisdiction to determine an employee's right to sue their employer for an accident during the course of employment under the Workmen's Compensation Act. The court held that actions should be stayed rather than dismissed to allow the Board to determine the employee's rights.

exclusive jurisdiction stay of proceedings workers compensation workplace health and safety workplace injury

Re Algoma Steel Corp. Ltd. and United Steelworkers of America, Local Union 2251

1975 CanLII 330 (ON SC) · 1975-06-16

Employment Termination: Arbitration Board Reinstatement Under Collective Agreement

A termination of employment case under a collective agreement, where an employee was dismissed for absence of ten consecutive working days without a reasonable excuse. The Board of arbitration found no reasonable excuse but ordered conditional reinstatement, raising questions about whether the board exceeded its jurisdiction and whether the collective agreement prohibited such a remedy.

arbitration collective agreements reasonable excuse termination of employment workplace health and safety

Regina v. Fiber & Wire Industries Ltd.

1973 CanLII 1469 (ON SC) · 1973-05-04

Workplace Safety: Employer Strict Liability Under Industrial Safety Act

An appeal concerning an employer's liability under the Industrial Safety Act, 1971, for failing to ensure an employee used required eye protection while operating a grinding wheel. The court ruled that the employer's strict duty under the Act is not affected by the employee's refusal to comply with safety measures, and the appeal was allowed with the matter remitted for further disposition under strict liability principles.

employer liability industrial safety act safety regulations strict liability workplace health and safety

Toronto Harbour Commissioners v. S. et al.

1967 CanLII 326 (ON SC) · 1967-08-11

Secondary Picketing Injunction: Labour Relations Case in Ontario

An interlocutory injunction was granted to restrain secondary picketing at marine terminals, which was deemed unlawful regardless of the peaceful nature of the picketing or the legality of the underlying strike. The case also involves statutory interpretation regarding the authority of the Toronto Harbour Commissioners to seek such an injunction.

interlocutory injunction labour relations secondary picketing statutory interpretation workplace health and safety

Regina v. B. et al., Ex parte S.

1965 CanLII 282 (ON SC) · 1965-01-13

Collective Agreement Lunch Periods: Court Unable to Overturn Arbitration Decision

A merits decision involving the interpretation of a lunch period clause in a collective agreement. The arbitration board allowed interrupted lunch periods for day workers as long as the total time amounted to 30 minutes. The court found the interpretation unreasonable but was powerless to quash the award due to limited review powers.

arbitration collective agreements employment standards labour and employment workplace health and safety

General Printers Ltd. v. T. et al.

1964 CanLII 140 (ON SC) · 1964-09-01

Contempt of Court: Labour Injunction Breach and 15-Day Sentence

A merits decision involving a contempt of court case where non-parties were found to have breached a labour injunction through acts of violence and threats during picketing. The court emphasized the importance of enforcing injunctions to protect public interest and industrial peace, and imposed a 15-day sentence for contempt.

breach of injunction contempt of court labour and employment labour injunctions workplace health and safety

C. v. W.

1959 CanLII 142 (ON SC) · 1959-06-12

Workplace Accident: Employee Injured by Falling Tree During Tree-Felling Operation

A workplace accident case where an employee was injured by a falling tree during a tree-felling operation. The court examined the employer's duty to provide a safe system of work, the applicability of the volenti non fit injuria doctrine, and the employee's contributory negligence. The employee suffered severe injuries, including paralysis of the left arm and hand, and was awarded $15,000 in general damages, reduced by 50% due to contributory negligence.

contributory negligence damages calculation employer liability workplace accident workplace health and safety