Privilege — Ontario Employment Law
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About Privilege
In Ontario employment law, "privilege" is a legal doctrine that protects certain sensitive communications and documents from being disclosed during a lawsuit or legal dispute. While many people confuse the term with general "confidentiality," privilege is much more powerful. A confidential document might still be subject to disclosure in a courtroom, but a legally privileged document is completely shielded from the opposing party and the judge.
When a worker sues for wrongful dismissal, constructive dismissal, or human rights violations, both sides must typically share any documents relevant to the case in a phase called document discovery. However, employers often attempt to withhold records by claiming they are privileged. Understanding the boundaries of this protection is critical to ensuring a fair litigation process.
In the workplace context, three main types of privilege frequently arise. The first is solicitor-client privilege, which provides absolute protection for communications between a party (such as the company's management) and their lawyer for the purpose of seeking legal advice. The second is litigation privilege. This creates a temporary shield around documents created for the "dominant purpose" of existing or anticipated litigation—for example, a specialized internal report drafted immediately after a worker threatens to sue.
Thirdly, a major battleground in employment law involves workplace investigations into harassment or toxic environments under the Occupational Health and Safety Act (OHSA). Employers sometimes hire an external investigator and later refuse to release the interview notes, witness identities, or final report, citing privilege. In these situations, Ontario courts will often apply the "Wigmore test"—a rigorous legal standard that evaluates whether the communications were made in strict confidence, whether that confidence is essential to the relationship, and whether the benefit of keeping the records secret outweighs the benefit of a fair trial. Often, courts will order these documents to be produced if withholding them prevents the fired employee from effectively proving their case.
Because the rules surrounding document protection are deeply complex and heavily scrutinized by judges, you should never simply take a former employer's word that a crucial document is legally withheld. Getting a nuanced assessment from a dedicated legal professional who understands Ontario's civil procedure is crucial when building your case.
Frequently Asked Questions
What is the difference between a confidential workplace document and a privileged one?
Confidentiality is a generic duty or agreement not to share sensitive information, but courts can still force you to hand over confidential documents if they are relevant to a lawsuit. Privilege is a strict legal protection—such as solicitor-client privilege—that gives you the absolute right to refuse to share the document with the opposing side or the judge.
Can my employer refuse to give me the harassment investigation report by claiming it is privileged?
They might try, but it is not automatically protected. If the report was created for operational reasons or just to comply with the Occupational Health and Safety Act, courts often reject the privilege claim. They will apply a legal framework called the Wigmore test to determine if keeping the report secret is legally justified or unfair to your case.
Are internal emails between managers discussing my termination protected by privilege?
Generally, no. Standard business communications between managers discussing poor performance, termination logistics, or organizational restructuring are not privileged. They only become protected if the managers are directly communicating with a lawyer for legal advice.
What happens if I accidentally receive an email containing my employer's legal advice?
If you receive a document that is clearly protected by solicitor-client privilege—even anonymously or by mistake—you cannot use it. Improperly reading or attempting to use inadvertently disclosed privileged documents can seriously damage your legal standing and result in court sanctions against you.
Does putting 'Privileged and Confidential' at the top of a warning letter actually protect it?
No. Stamping a document with legal labels does not magically grant it legal privilege. The protection depends entirely on the purpose and nature of the document—such as whether it contains actual legal advice or was made specifically for a lawsuit.
When should I get a lawyer to fight an employer's refusal to share documents?
If your former employer responds to document production requests with sweeping claims of privilege over large batches of emails, HR files, or investigation summaries, it is time to have a legal advocate step in. A lawyer can properly challenge invalid claims during the discovery phase.
Common Scenarios
- An employer hires an external law firm to investigate an employee's claim of a toxic work environment. When the employee is later fired and sues for wrongful dismissal, the employer refuses to hand over the law firm's findings, arguing the entire investigation is shielded by solicitor-client privilege.
- During the discovery phase of a human rights complaint regarding discriminatory pay, the company attempts to hide internal HR memos that explain why salary increases were denied, incorrectly claiming they are covered by litigation privilege even though no lawsuit was anticipated at the time.
- A worker forwards emails between themselves and their employment lawyer to a personal friend for a second opinion, accidentally "waiving" their own solicitor-client privilege and allowing the employer's legal team to demand access to those previously protected communications.
What You Should Know
- Never use your company email or messaging systems to communicate with your own employment lawyer, as the employer may argue you had no expectation of privacy and claim the communications are not privileged.
- If your employer conducts a workplace harassment investigation, keep your own detailed notes of your interviews. Getting the official report later can be a difficult legal battle if they claim privilege.
- If you find or are anonymously sent documents that look like legal advice given to your boss, do not read or share them. Retain an employment lawyer immediately to navigate the situation without having your case thrown out.
- Be skeptical if an employer refuses to disclose basic HR documents or performance reviews during litigation. Privilege is meant for legal advice and trial preparation, not hiding embarrassing business decisions.
Featured Cases
B. v The Bank of Nova Scotia
2025 ONSC 323 (CanLII) · 2025-01-14B. v Bank of Nova Scotia: Privilege in Employment Docs
This is an interlocutory motion concerning document production in an employment dispute where the plaintiff challenged the defendant's claims of solicitor-client and litigation privilege over workplace investigation documents. The court addressed whether common interest privilege applied and affirmed the defendant's search efforts, while deferring costs to avoid halting the litigation.
Correct Group Inc. v. C.
2024 ONSC 3367 (CanLII) · 2024-06-12This case involves procedural motions regarding adjournments and solicitor and client privilege within the context of a wrongful dismissal dispute concerning reasonable notice.
Ontario (Ministry of Labour, Immigration, Training and Skills Development) v. Limen Group Const. (2019) Ltd.
2023 ONCJ 542 (CanLII) · 2023-03-07OH&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.
B. v. Royal College of Dental Surgeons of Ontario
2021 ONSC 5697 (CanLII) · 2021-08-24Wrongful Dismissal: Privilege and Retaliation Dispute
This is an interlocutory proceeding concerning a wrongful dismissal claim where the plaintiff alleged termination was in reprisal for raising concerns about a toxic work environment. The court addressed whether the plaintiff improperly used confidential documents obtained anonymously and determined that the Law Society of Ontario Rules of Professional Conduct did not bind the plaintiff as a client.
R. v. LONDON HEALTH SCIENCES CENTRE
2017 ONSC 5587 (CanLII) · 2017-08-16Constructive Dismissal: Privilege in Workplace Investigation
This is an interlocutory proceeding concerning discovery disputes in a constructive dismissal and workplace harassment case brought by a psychiatrist against a hospital and university. The court applied the Wigmore test to determine whether privilege protected the identities of individuals interviewed during a workplace investigation, ultimately rejecting the privilege claim to ensure fairness in litigation.
G. v. Habitat for Humanity Greater Toronto Inc.
2017 ONSC 2793 (CanLII) · 2017-05-04Gu v Habitat: Disclosure in Discrimination Case
This is an interlocutory motion regarding disclosure obligations in a wrongful dismissal and discrimination case. The plaintiff sought additional documents related to her termination, hiring of a replacement, and alleged discriminatory withholding of salary increases and bonuses. The court addressed claims of solicitor-client and settlement privilege, ultimately upholding privilege where applicable and ordering disclosure for the rationale behind salary increase decisions while dismissing the bonus claim due to lack of evidence.
E. v HONDA CANADA
2017 ONSC 1181 (CanLII) · 2017-02-17Overtime Pay: Limitation Periods and Privilege Disputes
This case addresses procedural and evidentiary disputes in an employment standards action regarding retroactive overtime pay claims dating back to 1997. Key issues include whether the claim is statute-barred under the Limitations Act, 2002, the applicability of discoverability principles, and the production of privileged documents and witness statements.
M. v T. Smith Engineering
2016 ONSC 2166 (CanLII) · 2016-04-01Constructive Dismissal: Removal of Counsel Motion
This is an interlocutory motion concerning the removal of counsel and privilege disputes in a case involving constructive dismissal and indemnity agreements. The court addressed whether counsel should be removed due to alleged conflicts of interest and whether documents from a joint litigation file were privileged. The motions to remove counsel were dismissed, and leave to amend pleadings was granted in part.
PowerServe Inc. v. Ontario College of Trades
2015 ONSC 857 (CanLII) · 2015-02-10This judicial review application challenges the impartiality of the Chair of the Electrician Ratio Review Panel, alleging a reasonable apprehension of bias due to the Chair's prior professional representation of a union party. The court also addressed whether a summons to the Chair for examination was relevant and protected by solicitor-client privilege.
H. v. London(City)
2015 ONSC 156 (CanLII) · 2015-01-09Wrongful Dismissal: Privilege Rejected for Investigation Report
This is an interlocutory motion regarding the disclosure of documents in a wrongful dismissal case brought by a former employee against the City of London. The plaintiff sought production of an external investigation report, while the employer claimed solicitor-client and litigation privilege. The court rejected the privilege claims, finding the investigation was not conducted for legal advice or the dominant purpose of litigation, but ordered redaction of personal and health information to comply with privacy legislation.
L. v. Toronto Police Services Board
2014 ONSC 3563 (CanLII) · 2014-06-13Leave to Appeal Dismissed: Criminal Record Disclosure
This is a motion for leave to appeal in a case where the applicant alleged that a police officer disclosed his criminal record, leading to his termination. The applicant sought to challenge a decision upholding the striking of privileged information from the statement of claim, arguing that documents from the public complaint process under the Police Services Act were privileged. The Divisional Court dismissed the motion for leave to appeal, finding the applicant did not meet the onerous test for leave.
R. v. CIBC Mortgages Inc.
2011 ONSC 2309 (CanLII) · 2011-04-18Workplace Discrimination: Discovery & Privilege Dispute
This interlocutory proceeding addressed discovery disputes in a wrongful dismissal case involving allegations of racial discrimination. The court declined to strike the defendant's statement of defence for non-compliance but ordered further compliance with discovery obligations, including revising the affidavit of documents and providing additional information regarding witness interviews.
K. v. Brantford
2011 ONSC 1891 (CanLII) · 2011-03-28Wrongful Dismissal: Striking Pleadings & Privilege
This is an interlocutory proceeding in a wrongful dismissal action where the court addressed several procedural motions. The court considered whether to strike claims for defamation, intentional interference with contractual relations, and human rights violations for lack of cause or particularity, and whether to order pre-pleading production of a confidential report and personnel file. Additionally, the court evaluated a motion to strike portions of the statement of claim for prolixity and irrelevance.
S. v. Honda of Canada Inc.
2010 ONSC 3770 (CanLII) · 2010-07-02This is an interlocutory procedural ruling concerning discovery disputes in an employment law case. The court addressed the plaintiff's requests for answers to refused questions, the sufficiency of the employer's affidavit of documents, and the disclosure of witness availability, applying relevant rules of civil procedure and privilege principles.
R. v. Bruce Power Inc.
2009 ONCA 573 (CanLII) · 2009-07-17R. v. Bruce Power Inc.: Privilege and Stay in OHSA Charges
This is an appeal to the Court of Appeal from a decision of the Ontario Court of Justice setting aside a stay of proceedings in a prosecution under the Occupational Health and Safety Act. An employee of a subcontractor was injured, and the employer created an internal investigation report protected by solicitor-client privilege. The Crown obtained the report, and the trial justice of the peace stayed the charges, but the summary conviction appeal judge reversed this. The Court of Appeal allowed the appeal and restored the stay of proceedings, finding that prejudice to the defence is presumed when the Crown improperly obtains privileged documents and the Crown failed to rebut it.
P. v. Ontario (Human Rights Commission)
2003 CanLII 8701 (ON CA) · 2003-01-29P. v. Ontario Human Rights Commission
This is an appeal to the Court of Appeal from an order of the Divisional Court ordering the production of a legal opinion. The employee, C.P., sought judicial review of a decision by the Ontario Human Rights Commission not to deal with her complaint against Sears Canada Inc. The Divisional Court held that a legal opinion provided to the Commission by its in-house counsel was not protected by solicitor-client privilege because the Commission was not adverse in interest to the complainant. The Court of Appeal allowed the Commission's appeal, holding that the legal opinion was protected by solicitor-client privilege, rejecting the lower courts' reliance on a New Brunswick decision.
Ontario (Human Rights Comm.) v. Ontario (Human Rights Board of Inquiry)
1993 CanLII 16421 (ON CTGDDC) · 1993-11-08Human Rights Disclosure: Duty of Fairness & Stinchcombe
This judicial review addresses whether the duty of fairness in human rights proceedings requires the disclosure of investigative materials, such as witness statements, to respondents. The Divisional Court applied principles from R. v. Stinchcombe to ensure fairness and eliminate surprise, while balancing the respondents' right to know the case against the complainants' privacy and the risk of discouraging complaints.