Ontario Severance

Regulatory Prosecutions — Ontario Employment Law

19 casesDecisions from 1903–2025

About Regulatory Prosecutions

In the landscape of Ontario employment law, a regulatory prosecution is a quasi-criminal proceeding brought by the provincial government against a business, director, or worker for violating workplace statutes. While most employment disputes—such as wrongful dismissal or breach of contract—involve workers suing employers in civil court for financial compensation, a regulatory prosecution is driven by the Ministry of Labour, Immigration, Training and Skills Development (MLITSD). Working through the Provincial Offences Act, Ministry prosecutors lay formal charges to enforce compliance with laws like the Occupational Health and Safety Act (OHSA), the Employment Standards Act, 2000 (ESA), and the Employment Protection for Foreign Nationals Act (EPFNA).

These prosecutions typically arise following critical workplace accidents, willful disregard of Ministry orders, or systemic wage theft. In these proceedings, the Crown does not need to prove that the employer actually intended to cause harm or break the law. Most regulatory offences in Ontario are categorized as "strict liability" offences. This means the prosecutor only needs to prove the actus reus—that the prohibited act occurred (for instance, a safety guard was missing, an ESA wage order was ignored, or illegal recruitment fees were charged).

Once the Crown proves the prohibited act beyond a reasonable doubt, the burden of proof shifts to the defendant. To avoid a conviction, the accused must establish a defence of "due diligence" on a balance of probabilities. A successful defence requires proving that the company or individual took all reasonable precautions in the circumstances to prevent the violation from occurring.

The stakes in regulatory prosecutions are severe. Corporate fines for OHSA violations can climb into the millions, while individuals, including corporate directors and site supervisors, face heavy personal fines or even jail time. Similarly, ignoring an ESA order to pay wages can trigger numerous separate counts against corporate officers. Throughout this process, defendants have rights protected by the Canadian Charter of Rights and Freedoms, which can lead to complex pre-trial motions regarding unreasonable delay or evidence disclosure. Because these proceedings carry quasi-criminal penalties and rely on rigorous procedural rules, any organization or individual targeted by a Ministry investigation should seek highly specialized legal counsel immediately to protect their rights and formulate a defence.

Frequently Asked Questions

What is the difference between a regulatory prosecution and a civil lawsuit in employment law?

A civil lawsuit is typically filed by an employee seeking money for things like wrongful dismissal or harassment. A regulatory prosecution is a quasi-criminal case brought by the Ontario government (the Crown) to punish an employer or individual with fines or jail time for breaking statutes like the Occupational Health and Safety Act or the Employment Standards Act.

Who can the Ministry of Labour lay charges against?

Depending on the specific workplace legislation, the Ministry can lay charges against corporations, corporate directors, officers, managers, supervisors, and even individual workers. Directors in particular can face personal prosecution if they fail to ensure their corporation complies with certain Ministry orders.

What is the due diligence defence in a strict liability offence?

In strict liability offences, the Crown only has to prove that the prohibited act happened. The defendant can escape conviction by proving "due diligence," which means showing they took all reasonable steps and precautions to prevent the incident or violation from occurring.

How long does the government have to start a regulatory prosecution?

This depends on the specific legislation. Under the Occupational Health and Safety Act, the Ministry generally has one year from the date of the offence, or the date an inspector became aware of it, to lay charges. For some Employment Standards Act violations, failing to comply with an order may be treated as a continuing offence, which can complicate the strict application of limitation periods.

Do I have Charter rights during a Ministry of Labour investigation?

Yes, defendants in regulatory prosecutions are protected by the Canadian Charter of Rights and Freedoms. These protections can be used to challenge improper search and seizure of workplace documents, unreasonable delays in getting to trial, or the Crown's failure to properly disclose evidence.

When should an employer hire a lawyer for an MLITSD investigation?

Management should consult an employment or regulatory defence lawyer the moment a routine Ministry inspection shifts into an active investigation for potential charges. Securing legal advice early helps protect your rights during interviews and ensures you do not inadvertently compromise your defence.

Common Scenarios

  • Following a critical injury on a factory floor where an employee bypassed a safety mechanism, the Ministry charges both the manufacturing corporation and the floor supervisor under the Occupational Health and Safety Act for failing to maintain a safe work environment.
  • A restaurant owner repeatedly ignores multiple Ministry Orders to Pay regarding systemic overtime wage arrears, prompting the Crown to launch a prosecution against the business and the director personally under the Employment Standards Act.
  • An agricultural staffing agency is investigated after an anonymous tip and faces dozens of charges under the Employment Protection for Foreign Nationals Act for illegally deducting heavy recruitment fees from the wages of temporary foreign workers.

What You Should Know

  • Always distinguish between an inspector's routine compliance visit and a full-blown investigation; your obligation to answer questions changes significantly if you are the explicit target of regulatory charges.
  • Maintain meticulous, timestamped logs of all workplace safety training, policy updates, and equipment maintenance, as this physical evidence is the foundation of proving a due diligence defence in court.
  • Never ignore an employment standards order, because deliberately failing to comply with an active order constitutes a separate regulatory offence that can lead to steep fines and prosecution.
  • Corporate directors must take an active role in ensuring their companies follow wage and safety laws, as passive ignorance is not a valid defence against personal liability in a prosecution.
  • If your company is served with a summons, engage legal counsel immediately to review the Crown's disclosure package, as there may be grounds to seek a stay of proceedings if the prosecution has been unreasonably delayed.

Featured Cases

Ontario (Ministry of Labour, Immigration, Training and Skills Development) v. Corporation of the Town of Bancroft

2025 ONCJ 745 (CanLII) · 2025-09-08

OHSA Prosecution: Charge Dismissed for Inaccessible Area

This is a merits decision in a prosecution under the Occupational Health and Safety Act concerning whether an area along rails and under a compactor constituted a 'floor or other surface used by a worker.' The court dismissed the charge, finding that the space was inaccessible and did not present a slip and fall hazard, meaning the actus reus was not proven. The court also found that due diligence was established in the alternative.

due diligence occupational health and safety regulatory prosecutions statutory interpretation workplace safety

Ontario (Ministry of Labour, Immigration, Training and Skills Development) v. The Econo-Rack Group Inc.

2025 ONCJ 213 (CanLII) · 2025-04-17

OHS Prosecution: Motion for Particulars Dismissed

This is a procedural ruling in a prosecution under the Occupational Health and Safety Act where the court addressed motions for particulars and the sufficiency of charges. The court dismissed the motion for particulars as unnecessary for trial fairness and held that the charge regarding the safe transportation of materials was factually sufficient.

motion for particulars occupational health and safety provincial offences regulatory prosecutions workplace safety

Ontario (Ministry of Labour, Immigration, Training and Skills Development) v. A & L Hammer Workforce Management Inc.

2024 ONCJ 408 (CanLII) · 2024-08-22

Employment Standards: Continuing Offences & Limitation Periods

This is a procedural ruling in a prosecution brought by the Ministry of Labour against an employer for failing to comply with orders under the Employment Standards Act and the Employment Protection for Foreign Nationals Act. The court addressed whether the charges were barred by limitation periods, determining that the offences were continuing and that the application to quash the charges should be heard on its merits despite being brought late.

compliance continuing offences employment standards limitation periods regulatory prosecutions

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. A & L Hammer Workforce Management Inc.

2024 ONCJ 192 (CanLII) · 2024-04-18

A regulatory prosecution of a corporation and its director for 18 counts of failing to comply with orders to pay wages and recruitment fees under the Employment Standards Act and the Employment Protection for Foreign Nationals Act. The court addressed whether the defendants failed to comply with orders, the applicability of the due diligence defence, and whether evidence established that the corporation continued operations despite claims of business closure.

compliance orders due diligence employment standards foreign nationals regulatory prosecutions

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

2023 ONCJ 535 (CanLII) · 2023-11-29

OHSA Prosecution: Due Diligence and Employer Liability

This is a merits decision in a statutory prosecution under the Occupational Health and Safety Act involving a corporate defendant and individual supervisors. The court addressed whether the defendants were employers or supervisors, whether they proved due diligence regarding hazardous rigging practices using embedded rebar, and the scope of their duties under the Act. The court found the essential elements of the counts proved and rejected the due diligence defence.

due diligence employer liability occupational health and safety regulatory prosecutions workplace safety

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

2023 ONCJ 542 (CanLII) · 2023-03-07

OH&S Prosecution: Disclosure and Privilege Ruling

This is a procedural ruling in a prosecution under the Occupational Health and Safety Act arising from a workplace fatality. The court addressed motions for disclosure of disciplinary records and solicitor-client communications, finding that privilege was upheld and disclosure denied. The court also rejected Charter delay and abuse of process arguments, refusing to stay the proceedings.

disclosure occupational health and safety privilege regulatory prosecutions workplace fatality

R. v. Bondfield Construction Company Limited

2022 ONCA 302 (CanLII) · 2022-04-14

Court of Appeal Reinstates OHSA Electrical Charges

This is an appeal to the Court of Appeal from an appeal judge's decision regarding employer convictions under the Occupational Health and Safety Act. The Crown appealed the acquittals of three construction and electrical companies after a field service technician was severely burned by an electrical arc flash. The trial justice initially convicted the employers, but the appeal judge overturned the convictions after finding the energized electrical parts were not exposed. The Court of Appeal allowed the appeal in part, finding that the appeal judge erred by ignoring the context and purpose of the safety regulations when interpreting the requirement to disconnect power to equipment. The court set aside the acquittals for the power disconnection offences, upheld the acquittals regarding unauthorized room access, and remitted the remaining due diligence and sentencing issues to the lower court.

due diligence electrical hazards occupational health and safety regulatory prosecutions workplace safety

Ontario (Ministry of Labour) v. GMJ Electric Inc.

2021 ONCJ 102 (CanLII) · 2021-02-22

OHSA Appeal: Employer & Supervisor Convictions Upheld

This is an appeal from convictions under the Occupational Health and Safety Act regarding workplace safety violations. The Ontario Court of Justice dismissed the appeals, upholding convictions against GMJ Electric Inc. and a supervisor for failing to provide a safe work environment, specifically regarding fall hazards and lack of training, and confirming the supervisor's status under the Act.

occupational health and safety regulatory prosecutions strict liability supervisor liability workplace safety

Ontario (Ministry of the Environment and Climate Change) v. Sunrise Propane Energy Group Inc.

2018 ONCA 461 (CanLII) · 2018-05-15

Workplace Safety Appeal: Due Diligence Defence

This is a motion for leave to appeal to the Court of Appeal from an appeal judge's decision concerning convictions for environmental and workplace safety offences. Sunrise Propane Energy Group Inc. and its directors sought leave to appeal their convictions following a fatal workplace explosion. The trial judge convicted the applicants and imposed fines totalling $5.3 million, which the appeal judge upheld. The Court of Appeal refused leave to appeal because the applicants raised questions of mixed fact and law rather than pure questions of law essential in the public interest. The fines totalling $5.3 million stand.

due diligence occupational health and safety provincial offences regulatory prosecutions workplace safety

Terrace Bay Pulp Inc. (Re)

2013 ONSC 5111 (CanLII) · 2013-08-09

CCAA Stay of OHSA Prosecutions: Regulatory vs Creditor Enforcement

An insolvent company applied for a stay of proceedings under the Companies’ Creditors Arrangement Act (CCAA) to halt Occupational Health and Safety Act (OHSA) prosecutions. The court determined that the OHSA proceedings were regulatory in nature rather than creditor enforcement, and thus were not stayed under the CCAA or subject to federal paramountcy.

ccaa insolvency ohsa regulatory prosecutions stay of proceedings

R. v. Sheehan's Truck Centre Inc.

2011 ONCA 170 (CanLII) · 2011-03-02

R. v. Sheehan's Truck Centre: OHSA Jurisdiction Appeal

This is a motion to the Court of Appeal for leave to appeal from an appeal judge's decision regarding a workplace safety conviction under the Occupational Health and Safety Act. A worker was seriously injured when a co-worker reversed a truck over him, and the employer, Sheehan's Truck Centre Inc., was charged for failing to provide a signaller. The justice of the peace acquitted the employer, but the Ontario Court of Justice allowed the Crown's appeal and entered a guilty verdict. The Court of Appeal granted the employer's motion for leave to appeal. The Court decided that the correct interpretation of the signaller requirement and the employer's argument that the regulation is unconstitutionally overbroad raise issues essential to the public interest.

employer liability jurisdiction occupational health and safety regulatory prosecutions workplace safety

Ontario (Workplace Safety & Insurance Board) v. Commercial Spring and Tool Company

2009 CanLII 48827 (ON SC) · 2009-09-17

WSIA Prosecution: Limitation Periods and Mandamus

This is a procedural and statutory interpretation ruling concerning the prosecution of an employer for offences under the Workplace Safety and Insurance Act (WSIA). The court addressed whether a limitation period applies to section 149 offences (false or misleading statements) and whether mandamus was appropriate to restore charges quashed by a Justice of the Peace.

mandamus regulatory prosecutions statutory interpretation workplace safety wsia

R. v. Moran Mining and Tunnelling Ltd.

2006 CanLII 19042 (ON SC) · 2006-05-12

A criminal prosecution of a mining and tunnelling company for occupational health and safety offences. The case involved a charge to the jury regarding statutory infractions.

occupational health and safety regulatory prosecutions statutory offences workplace safety

R. v. C.

2006 CanLII 5449 (ON SC) · 2006-02-24

Worker Liability Under OHSA: R. v. C.

This is a criminal appeal concerning a conviction under the Occupational Health and Safety Act for failing to take basic safety measures while felling a tree, which resulted in severe injury to a co-worker. The appellant argued that the employer's failure to maintain a safe worksite negated his liability and that the prosecution's conduct warranted a stay of proceedings under Section 7 of the Charter. The court upheld the conviction, finding that workers and employers bear independent obligations under the Act and that no overwhelming evidence of unfairness existed to justify a stay.

charter rights occupational health and safety regulatory prosecutions worker liability workplace injury

Ontario (Ministry of Labour) v. Hamilton (City)

2002 CanLII 16893 (ON CA) · 2002-01-29

OHS Prosecution: Fatal Accident & Signaller Duties

This is an appeal concerning a prosecution under the Occupational Health and Safety Act following a fatal workplace accident involving a reversing dump truck. The Court of Appeal addressed whether the employer's failure to provide a signaller could be proven by evidence that the signaller failed to meet specific regulatory requirements, interpreting sections 104 and 106 of Ontario Regulation 213/91 as complementary provisions.

employer obligations occupational health and safety regulatory prosecutions statutory interpretation workplace injury

R. v. Timminco Ltd.

1999 CanLII 36527 (ON SC) · 1999-10-27

R. v. Timminco: Employer Strict Liability under OHS Act

This is a criminal appeal concerning an employer's liability under the Occupational Health and Safety Act for workplace hazards. The case addresses whether the Act imposes strict liability on employers for failing to guard moving parts of machinery and whether a directed verdict of acquittal was appropriate due to lack of evidence of the employer's prior knowledge of the hazard.

employer liability occupational health and safety regulatory prosecutions strict liability workplace hazards

R. v. Brennan Paving and Construction Ltd.

1998 CanLII 926 (ON CA) · 1998-11-23

Workplace Safety Prosecution: Abuse of Process Appeal

This was an appeal to the Court of Appeal by the Crown from a judge's decision upholding a Justice of the Peace's stay of proceedings in an Occupational Health and Safety Act prosecution against Brennan Paving and Construction Ltd. The Justice of the Peace stayed the charges, finding that a Ministry investigator's lie about impending charges breached the corporate accused's right to silence and that the Crown improperly withheld legal memoranda. The Court of Appeal allowed the appeal, setting aside the stay and remitting the matter for trial. The Court found that a corporation has no right to remain silent, and any prejudice from the investigator's conduct should be assessed at trial rather than prematurely staying the serious charges. Furthermore, the Court held that the withheld memoranda were protected work product and legal advice, meaning the Crown was not obliged to disclose them.

abuse of process corporate liability occupational health and safety regulatory prosecutions workplace safety

The King v. L.

1903 CanLII 103 (ON DIVCT) · 1903-04-04

Master and Servant Act: Criminal Prosecution for Unpaid Costs

This is a judicial review by the Divisional Court of a conviction obtained under the Ontario Master and Servant Act, where an employee was prosecuted for leaving employment without repaying transportation costs advanced by the employer. The court addressed issues regarding the validity of the amended information, procedural fairness, and the constitutional jurisdiction of the province to enact such provisions under the Criminal Code.

employment agreement master and servant procedural fairness regulatory prosecutions statutory interpretation