Ontario Severance

Disclosure — Ontario Employment Law

21 casesDecisions from 1989–2024

About Disclosure

In Ontario employment litigation, pursuing a claim for wrongful dismissal, discrimination, or unpaid wages involves far more than simply telling your side of the story to a judge or adjudicator. A cornerstone of the legal process is the mandatory duty of "disclosure." This legal mechanism requires both the employee and the employer to reveal all relevant documents in their possession, control, or power that relate to the matters in dispute.

Governed heavily by the Ontario Rules of Civil Procedure (specifically Rule 30), disclosure ensures that lawsuits are resolved on their merits rather than through trial by ambush. Both parties are generally required to swear an "Affidavit of Documents." This formal, sworn statement lists every relevant piece of evidence—such as employment contracts, performance reviews, disciplinary records, internal HR emails, and medical notes.

Disclosure obligations apply equally to workers. If you were terminated, you must disclose evidence of your efforts to find replacement work (mitigation), such as job application logs, rejection letters, and employment income from new roles. Conversely, employers often try to shield sensitive internal communications from the opposing side by claiming they are confidential. However, unless a document meets the strict legal test for "privilege" (such as confidential advice from a lawyer or records created specifically for anticipated litigation), it must be disclosed. Ontario courts have frequently ruled that routine internal HR communications about an employee's performance or termination strategy are fully disclosable, even if the employer prefers to keep them hidden.

Failing to meet disclosure obligations carries serious consequences. If a party intentionally hides documents, destroys evidence (known as spoliation), or repeatedly ignores court orders to deliver an Affidavit of Documents, the court can impose severe penalties. Under Rule 30.03, an extreme consequence is having a Statement of Claim or Statement of Defence "struck"—meaning the non-compliant party effectively loses the case by default.

Navigating what is truly relevant versus what remains private can be incredibly tricky, as civil procedure rules demand both transparency and proportionality. Because navigating the evidentiary requirements of the justice system is complex and highly specific to the facts of your dispute, securing guidance from a qualified Ontario employment advocate early in the process is highly recommended.

Frequently Asked Questions

What is an Affidavit of Documents in an Ontario employment lawsuit?

An Affidavit of Documents is a sworn, formal list of all documents relevant to the lawsuit that are or were in your possession. It requires you to categorize documents into separate groups: those you currently have, those you no longer have, and those you are refusing to hand over due to legal privilege.

Can my former employer refuse to disclose their internal HR emails?

An employer can only refuse to disclose internal emails if they are protected by legal privilege. General HR planning emails or internal investigations conducted before a lawsuit was reasonably anticipated do not usually qualify for "litigation privilege" and must be legally disclosed.

Do I have to disclose my personal emails or text messages if I sue my employer?

Yes, if those texts or emails are relevant to your employment dispute. For instance, text messages to a colleague discussing workplace harassment, or personal emails used to apply for new jobs after termination, are highly relevant and part of your mandatory disclosure obligations.

What happens if a company hides important documents during a wrongful dismissal case?

If an employer conceals relevant documents, your legal counsel can bring a motion to compel their disclosure. If the employer disobeys court orders to disclose evidence, Ontario judges can award financial costs against them or, as a last resort, strike their Statement of Defence entirely.

What documents do I need to disclose to prove I searched for a new job?

Ontario law requires wrongfully dismissed employees to mitigate their damages by searching for comparable work. You must disclose job search logs, copies of resumes submitted, email communications with recruiters, and details of any interviews or job offers.

When is the deadline to disclose documents after filing a statement of claim?

Typically, the deadline for exchanging Affidavits of Documents is outlined in a legally binding discovery plan created by both parties' counsel. Under the default Rules of Civil Procedure, it usually occurs shortly after the pleadings (the claim and the defence) are officially closed.

Should I organize and delete my own files before contacting an employment lawyer?

No. You should immediately preserve all potential evidence, including text messages, emails, and notes. An experienced employment lawyer must assess what is legally relevant for disclosure; deleting documents on your own could lead to allegations of destroying evidence.

Common Scenarios

  • An employee claims they were constructively dismissed due to a toxic workplace environment, and their counsel explicitly demands the disclosure of an internal workplace investigation report that management attempted to classify as "confidential."
  • During an interlocutory proceeding in an employment class action, the representative plaintiff seeks the disclosure of the specific algorithms and payroll data the defendant company used to identify potential class members.
  • A worker claiming significant mental distress damages following a discriminatory firing is ordered to disclose clinical records and therapy notes, as they have put their medical condition directly at issue in the litigation.
  • An employer repeatedly misses court-mandated deadlines to provide their sworn Affidavit of Documents in a wrongful dismissal suit, leading the worker's lawyer to file a motion to strike the employer's defence.

What You Should Know

  • Implement a personal 'litigation hold' the moment an employment dispute arises by freezing and saving all relevant texts, emails, and voicemails, as the destruction of evidence carries severe penalties in Ontario courts.
  • Never assume that a document stamped 'confidential' by your employer is automatically exempt from disclosure; generally, only communications involving legal advice or trial preparation are fully protected.
  • Maintain an impeccably organized log of your post-termination job search activities, as these records are mandatory disclosure items that prove you fulfilled your duty to mitigate damages.
  • Be honest and thorough when listing relevant documents; attempting to hide an embarrassing email during the disclosure phase usually causes far more damage to your credibility when the opposing side inevitably uncovers it.
  • Always consult with an Ontario employment legal professional before sharing sensitive files, as they will navigate the discovery process to ensure you meet your legal obligations without unnecessarily compromising your privacy.

Featured Cases

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.

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

H. v. C. and Walther Communications Limited

2020 ONSC 6100 (CanLII) · 2020-10-07

A wrongful dismissal case involving issues of disclosure and the employee's duty to mitigate damages. The proceedings reference specific court rules regarding offers to settle or procedural motions.

disclosure employment law mitigation wrongful dismissal

The Society of United Professionals v. New Horizon System Solutions

2020 ONSC 3153 (CanLII) · 2020-05-20

Judicial Review: Union MSA Disclosure Duty

This is a judicial review of an Ontario Labour Relations Board decision regarding an employer's duty to bargain in good faith and disclose a Master Services Agreement to a union. The Divisional Court applied the standard of reasonableness to determine whether the Board's order for partial disclosure of the MSA was appropriate, balancing the union's representational rights against the employer's confidentiality obligations.

disclosure good faith bargaining judicial review labour relations union representation

D. v. Compucom Canada Co.

2019 ONSC 385 (CanLII) · 2019-01-15

This is a procedural ruling concerning evidence and trial practice in an employment law context. The case addresses the admissibility and handling of witness testimony via video conferences and issues related to disclosure.

disclosure evidence trial practice video conferences

G. v. St. Joseph Print Group Inc.

2018 ONSC 1411 (CanLII) · 2018-02-09

Constructive Dismissal: HR Email Privilege Rejected

This interlocutory proceeding addresses a dispute over litigation privilege in the context of a constructive dismissal claim. The court rejected the employer's claim that internal HR communications regarding performance strategies were privileged, finding that litigation was not reasonably anticipated at the time the emails were created and that they did not meet the requirements for common law privilege under the Wigmore test. The court ordered further disclosure of the contested HR emails to ensure fair litigation.

constructive dismissal disclosure employment law litigation privilege

Oz Optics Ltd. v J.R.Z.

2017 ONSC 4263 (CanLII) · 2017-07-11

Disclosure in Breach of Confidence: Former Employees

This is an interlocutory procedural ruling concerning the scope of document disclosure in a breach of confidence action involving former employees. The court applied rules of civil procedure regarding relevance and proportionality to determine whether defendants' personal financial records and the plaintiff's financial statements should be produced in the context of allegations of misappropriation of confidential information.

breach of confidence disclosure former employee proportionality

G. v. Habitat for Humanity Greater Toronto Inc.

2017 ONSC 2793 (CanLII) · 2017-05-04

Gu 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.

civil procedure disclosure privilege workplace discrimination wrongful dismissal

B. v L.

2017 ONSC 1409 (CanLII) · 2017-03-01

Employment Class Action: Cut-off Date for Membership

This is an interlocutory decision in an employment class action concerning procedural matters. The court addressed the appropriate cut-off date for class membership, ruling that the date notice is given to class members is the correct standard. Additionally, the court clarified the defendant's obligation to disclose the process used to identify class members, holding that such disclosure is unnecessary unless membership disputes arise.

civil procedure class action cut-off date disclosure employment law

B. v KMI Brokers Inc. et al

2017 ONSC 191 (CanLII) · 2017-01-09

Wrongful Dismissal: Striking Pleadings for Disclosure Breaches

This is an interlocutory motion in a wrongful dismissal case where the plaintiff sought to strike the defendant's Statement of Defence due to procedural breaches. The defendants failed to comply with court orders and deliver a proper Affidavit of Documents, raising issues regarding the reasonableness of their explanation and the conduct of counsel. The court considered whether striking pleadings was justified as a last resort under Rule 30.03 of the Rules of Civil Procedure.

civil procedure disclosure striking pleadings wrongful dismissal

S. v Tony Graham Motors Group

2015 ONSC 3976 (CanLII) · 2015-06-19

Common Employer Doctrine & Disclosure Proportionality

This case addresses whether the common employer doctrine applies to hold interconnected corporations jointly liable for constructive dismissal when the defendants have admitted interconnectivity. The court also considered whether the principle of proportionality under Rule 1.04 limits the disclosure of financial records that are relevant but unnecessary due to these admissions.

common employer constructive dismissal disclosure proportionality

H. v. London(City)

2015 ONSC 156 (CanLII) · 2015-01-09

Wrongful 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.

disclosure investigation privilege wrongful dismissal

M. v. G.

2014 ONSC 4561 (CanLII) · 2014-08-19

Employment Dispute: Disclosure and Costs Motion

This is an interlocutory motion concerning disclosure and costs in an employment dispute where the plaintiff was terminated without cause. The court addressed whether to clarify a prior order to include travel-related documents relevant to the nature of the employment and determined the appropriate costs for the motion under Rule 57.01.

civil procedure costs disclosure employment dispute termination

M. v. Boulder City Climbing School Inc.

2007 ONCA 757 (CanLII) · 2007-11-06

Employment Contract: Bonus Clause & Personal Liability Appeal

This is an appeal from a trial decision in an employment contract dispute concerning the interpretation of a bonus clause, unpaid salary, and expenses. The Court of Appeal upheld the trial judge's interpretation of the bonus clause and the award of $8,301 in damages, while also affirming the personal liability of a corporate officer for the amounts owing.

bonus clause disclosure employment contract personal liability unpaid salary

H. v. Ontario Municipal Employees Retirement Board

2005 CanLII 39859 (ON CA) · 2005-11-01

Pension Fiduciary Duty: Disclosure of Plan Changes

This appeal concerns the fiduciary duties and disclosure obligations of a pension plan administrator under the Pension Benefits Act. The court addressed whether the administrator breached its duty by failing to disclose speculative potential plan changes and by selecting an effective date for amendments. The court found that speculative information did not trigger a duty to disclose and that the administrator's decisions were made in good faith and for administrative certainty.

disclosure fiduciary duties good faith negligent misrepresentation pension benefits

P. v. Ontario (Human Rights Commission)

2003 CanLII 8701 (ON CA) · 2003-01-29

P. 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.

disclosure human rights human rights code judicial review practice and procedure privilege

Ontario (Human Rights Commission) v. Dofasco Inc.

2001 CanLII 2554 (ON CA) · 2001-11-16

Human Rights: Tribunal Jurisdiction to Order Medical Disclosure

This is an appeal to the Court of Appeal for Ontario regarding the jurisdiction of a board of inquiry in a human rights complaint alleging discrimination and termination due to disability. The central issue was whether the board had the authority to order the complainant to disclose medical and other private documents to the employer. The court addressed the scope of tribunal powers under the Human Rights Code and Statutory Powers Procedure Act, balancing privacy rights with procedural fairness.

disability disclosure discrimination human rights tribunal jurisdiction

R. v. 974649 Ontario Inc.

1998 CanLII 6098 (ON CA) · 1998-11-13

OHSA Charges, Charter Remedies: Court Jurisdiction for Costs

This was an appeal to the Court of Appeal from a judicial review decision regarding an order of costs. The employer and a supervisor were charged under the Occupational Health and Safety Act. The provincial offences court found the Crown breached the Charter by failing to disclose a document and ordered the Crown to pay $2,000 in costs. The General Division quashed the cost order, finding no jurisdiction. The Court of Appeal decided the provincial offences court did have jurisdiction under s. 24(1) of the Charter and allowed the appeal, sending the case back to consider if the cost order was appropriate.

occupational health and safety ohsa charter rights costs jurisdiction provincial offences disclosure

Ontario (Human Rights Commission) v. Ontario (Board of Inquiry into Northwestern General Hospital)

1994 CanLII 10981 (ON CTGDDC) · 1994-11-08

Human Rights: Board of Inquiry Disclosure Powers

This is a judicial review concerning the authority of a Board of Inquiry under the Human Rights Code to order the disclosure of witness statements and other documents during the investigation stage. The court addressed whether the disclosure of such materials undermines confidentiality and whether criminal disclosure standards (R. v. Stinchcombe) apply to human rights proceedings.

board of inquiry confidentiality disclosure human rights stinchcombe

Ontario (Human Rights Comm.) v. Ontario (Human Rights Board of Inquiry)

1993 CanLII 16421 (ON CTGDDC) · 1993-11-08

Human 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.

disclosure human rights judicial review privilege procedural fairness