Confidential Information — Ontario Employment Law
Related Keywords
About Confidential Information
In Ontario employment law, "confidential information" refers to the proprietary data, trade secrets, and internal knowledge that give a business its competitive advantage. While employees naturally acquire new skills, general knowledge, and experience during their tenure, this general "know-how" belongs to the worker. Confidential information, however, remains the exclusive property of the employer. Courts draw a sharp distinction between a worker's personal professional development and the prohibited taking of an employer's protected assets, such as specialized pricing formulas, internal financial projections, proprietary source code, or highly guarded client lists.
The obligation to protect this information arises in two primary ways. First, written employment contracts routinely include specific clauses outlining exactly what data the company considers proprietary and explicitly forbidding its use or disclosure during and after employment. Second, even in the complete absence of a written contract, Ontario's common law imposes an implied duty of fidelity and good faith on all employees. This means you cannot misappropriate trade secrets to unfairly compete against your former boss. Senior managers and executives often owe heightened "fiduciary duties," elevating their legal obligation to protect sensitive company information beyond that of front-line staff.
Disputes over proprietary data frequently erupt when an employee resigns to join a direct competitor or start their own business. If an employer suspects a departing worker has siphoned client databases or strategic plans to gain an unfair "springboard" advantage, they may rush to court to seek an interlocutory injunction. In Ontario, courts evaluate these urgent requests (often utilizing the RJR-MacDonald test) to determine if the employer will suffer irreparable harm if the former employee isn't immediately blocked from using the data. Because the line dividing an employee's permissible industry experience from an employer's guarded trade secrets is notoriously blurred and changes with every unique situation, obtaining tailored legal counsel is critical when navigating these disputes.
Frequently Asked Questions
What actually counts as confidential information in Ontario?
It typically includes non-public, proprietary assets that hold commercial value, such as trade secrets, unique software code, specialized client lists, and internal profit margins. It does not include public information or the routine skills and general industry knowledge you gain while doing your job.
Can my employer stop me from using skills I learned while working for them?
No. Under Ontario common law, your general skills, experience, and professional abilities belong to you. Your employer can only restrict you from using their specific, proprietary trade secrets and guarded data.
Do I still have to keep information secret if I never signed a written contract?
Yes. Even without a formal confidentiality agreement, Ontario employees owe an implied common law duty of fidelity. This means stealing or misusing true trade secrets or highly sensitive data to harm your employer is actionable in court.
How long does the duty to protect confidential information last after I leave a job?
Unlike restrictive covenants (like non-competition clauses) which must have strict geographical and time limits to be enforceable, the obligation to not exploit a former employer's true trade secrets can theoretically last indefinitely, or at least until the information becomes public knowledge.
Can my new employer be sued if I bring confidential information from my old job?
Yes. If a new employer knowingly receives or benefits from misappropriated trade secrets, they can be named in a lawsuit for issues like knowing receipt or inducing a breach of contract, and may face court injunctions limiting their business activities.
When should an employer reach out to a lawyer about suspected data theft?
Action should be taken immediately upon suspecting misappropriation. Delays can severely undermine an employer's ability to secure an urgent court injunction blocking the competitor's use of the stolen data.
Common Scenarios
- A senior sales executive downloads a company's meticulously curated master client list, complete with historical purchasing data and custom discounts, to a personal USB drive days before resigning to launch a competing firm.
- A software developer leaves a tech startup and attempts to integrate proprietary algorithms and source code they authored for their former employer into a new application they are building for a rival company.
- An HR director forwards highly sensitive employee compensation structures and unreleased corporate restructuring plans to their personal email account shortly before being terminated.
- A former manager mistakenly retains a company laptop and physical file boxes containing internal pricing strategies, prompting the former employer to pursue an interlocutory injunction to guarantee the items are returned without the data being copied.
What You Should Know
- Before your last day on the job, ensure that all company devices, physical files, and cloud storage accounts are fully surrendered to avoid unfounded allegations of data misappropriation.
- Employers should routinely audit data access, clearly labeling proprietary documents and employing password protections so that sensitive data is only accessible to employees who genuinely require it for their duties.
- If you are an employee transitioning to a competitor, avoid copying any templates, forms, or lists from your current employer, even if you created them yourself during working hours.
- Individuals moving into a highly competitive role in the same industry should have an employment lawyer scrutinize their transition plan to safely navigate the boundary between their transferable personal skills and the former employer's protected assets.
Featured Cases
Dymon Storage Corporation v. Nicholas Caragianis
2022 ONSC 5883 (CanLII) · 2022-10-18Noncompetition Covenants and Confidential Information Dispute
A court case involving a noncompetition covenant dispute between Dymon Storage Corporation and Nicholas Caragianis. The court denied an interlocutory injunction for the noncompetition clause, found it unreasonable, and granted leave to amend the statement of claim to add affiliates as plaintiffs.
Planit Search Inc. v. Mann
2013 ONSC 6847 (CanLII) · 2013-11-04Restrictive Covenants and Fiduciary Duties in Employment Agreements
A court case involving the enforceability of restrictive covenants in an employment agreement. The court found the restrictive covenant unenforceable due to its lack of geographical limits and impracticality. The plaintiff also sought an interlocutory injunction but failed to meet the RJR-MacDonald test. No fiduciary relationship was established between the former employee and the employer.
Intracorp v. Morgan
2010 ONSC 386 (CanLII) · 2010-01-21Fiduciary Duty Breach: Senior Employee Misappropriates Confidential Info
A case involving a senior employee who breached fiduciary duties by misappropriating confidential information and profiting from personal business ventures during employment. The court considered whether the employee must account for gains, return misappropriated information, and potentially return severance payments.
Schofield v. Schofield
2007 CanLII 48661 (ON SC) · 2007-11-13Enforceability of Non-Competition Clause in Employment Agreement
A case involving the enforceability of a non-competition clause in an employment agreement during the sale of a business. The court considered the reasonableness of the clause's scope and applied the RJR-MacDonald test. The case also included allegations of misuse of confidential information and the granting of an injunction to prevent its disclosure.
Boehmer Box L.P. v. Ellis Packaging Limited
2007 CanLII 14619 (ON SC) · 2007-05-01Senior Sales Executive Resigns: Fiduciary Duty and Non-Compete Dispute
A case involving a senior sales account executive who resigned and joined a competitor. The plaintiff sought to establish whether the employee owed fiduciary duties to the former employer, preventing solicitation of customers, and whether confidential information was misused. The court found no strong prima facie case for fiduciary duty or breach of confidence, and denied an interlocutory injunction.
Cygnal Technologies Corp. v. Taylor
2005 CanLII 25889 (ON SC) · 2005-07-21Fiduciary Duty Breach: Senior Employee Retains Confidential Info
A case involving a senior employee and director who allegedly breached fiduciary obligations by retaining confidential information and engaging in unfair competition. The court considered whether the defendant's actions constituted a breach of fiduciary duties and whether an interlocutory injunction should be granted.
1259695 Ontario Inc. v. Guinchard
2005 CanLII 17920 (ON SC) · 2005-05-20Breach of Confidence: Employee Soliciting Clients with Confidential Information
A labour and employment case involving a former employee who resigned and joined a competitor while using confidential customer information. The court considered whether an interim injunction should be continued to restrain the employee from soliciting clients and using confidential information, applying tests for interlocutory injunctions and breach of confidence.
Shannon rewinds Canada Inc. v. Anderson
2003 CanLII 43526 (ON SC) · 2003-04-30Employment Contract: Breach of Restrictive Covenants and Fiduciary Duties
An interlocutory injunction case involving claims that employees breached their fiduciary duties and restrictive covenants by competing with their employer and misusing confidential information. The court considered whether interim orders issued by Justice Brennan and Justice Pitt should be dissolved or continued, applying principles from RJR–Macdonald Inc. v. Canada (Attorney General) and Jet Print Inc. v. Cohen.
KJA Consultants Inc. v. Soberman
2002 CanLII 49613 (ON SC) · 2002-02-11Senior Employee Breach of Fiduciary Duty: Injunction Granted for 18 Months
A breach of fiduciary duty case involving a senior employee who solicited over 300 clients and used confidential information, leading to a dispute over whether such actions constituted unfair competition and breach of obligations. The court considered injunctive relief and the duration of the injunction based on equitable principles.
ATI Technologies Inc. v. Henry
2000 CanLII 22607 (ON SC) · 2000-12-05Employment Contract Dispute: Injunction Denied Over Restrictive Covenants
A case involving a former employee of ATI Technologies Inc. who was sought to be enjoined from working for a competitor. The plaintiff relied on the doctrine of inevitable disclosure and a confidentiality agreement, but the court denied the injunction due to the absence of a restrictive covenant in the employment contract and insufficient evidence of irreparable harm.
Sanford Evans List Brokerage v. Trauzzi
2000 CanLII 22741 (ON SC) · 2000-04-20Fiduciary Duty Breach: Senior Employees Form Competing Business
A case involving senior employees who left their employer to form a competing business, raising questions about whether their actions constituted unfair competition and breach of fiduciary duties. The court examined whether the employees' roles imposed fiduciary obligations and whether they improperly solicited clients or misused confidential information.
Scantron Corp. v. Bruce
1996 CanLII 8140 (ON SC) · 1996-06-05Restrictive Covenants and Fiduciary Duties in Employment Contracts
A case involving the enforceability of restrictive covenants and fiduciary duties in an employment contract, focusing on whether former senior employees can solicit customers or use confidential information after termination. The court examined the balance between an employer's proprietary interests and an employee's right to compete.
Canadian Industrial Distributors Inc. v. Dargue
1994 CanLII 7319 (ON SC) · 1994-09-22Fiduciary Duty Breach: Senior Employee Misuses Confidential Info and Solicits Customers
A case involving a senior employee who was found to have breached fiduciary duties owed to their employer by misusing confidential information, soliciting suppliers and customers, and failing to comply with legal obligations during and after resignation. The court applied strict fiduciary standards and apportioned damages based on the employer’s economic indicators.
Genesis Canada Inc. v. Hill
1994 CanLII 7534 (ON SC) · 1994-08-19Senior Employees Alleged to Breach Fiduciary Duties and Confidentiality
A labour and employment case involving senior employees accused of breaching fiduciary duties and confidentiality obligations by competing with their former employer and using confidential information. The plaintiff sought an interlocutory injunction to prevent the defendants from using the plaintiff’s proprietary system and to enforce non-competition clauses.
Quantum Management Services Ltd. v. Hann (H.C.J.)
1989 CanLII 4370 (ON SC) · 1989-04-14Senior Employees Breach Fiduciary Duty by Soliciting Clients
A case involving senior employees who breached their fiduciary duties by soliciting former clients and exploiting confidential information after leaving their employer. The court addressed whether non-competition clauses were enforceable and calculated damages based on lost profits during a nine-month fiduciary duty period.
R.W. Hamilton Ltd. v. Aeroquip Corp. (H.C.J.)
1988 CanLII 4527 (ON SC) · 1988-06-30Fiduciary Duty and Competition: Managerial Employees Starting Competing Business
A case involving managerial employees who resigned and started a competing business. The court examined whether the employees owed a fiduciary duty to their former employer and whether they breached their obligations by soliciting customers or using confidential information. The court held that employees may use knowledge acquired during employment but cannot use stolen confidential information, and former employees are generally entitled to compete unless restricted by contract or they misuse confidential information.
Drake International Ltd. v. Miller et al.
1975 CanLII 363 (ON SC) · 1975-05-08Enforceability of Non-Compete Clause in Employment Contract
A case involving the enforceability of a restrictive covenant in an employment contract, where an employee of a personnel agency was prohibited from working for a competitor for six months after termination. The court found the covenant unreasonable as it did not protect legitimate business interests and denied an interlocutory injunction sought by the employer.
Computer Centre Personnel Ltd. v. Lagopoulos et al. and two other actions
1975 CanLII 677 (ON SC) · 1975-02-28Enforceability of Restrictive Covenants in Employment Contracts
A case involving the enforceability of restrictive covenants in employment contracts, including non-competition and non-solicitation clauses. The court examined whether the covenants were reasonable in scope and duration, and whether they protected legitimate interests such as client lists, goodwill, and training investments.
Management Recruiters of Toronto Ltd. v. Bagg
1970 CanLII 528 (ON SC) · 1970-06-29Employment Contract: Covenant Not to Compete and Confidentiality Dispute
An employment contract case involving a covenant not to compete and confidentiality obligations. The employee was terminated and joined a competitor, leading to disputes over the enforceability of the non-compete clause and the use of confidential information. The court denied an interim injunction to enforce the covenant not to compete but granted one to restrain the use of confidential information.