Updated August 2026, Current Ontario ESA and CPSO telemedicine standards.
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Workplace Harassment & Stress Leave in Ontario
Workplace harassment, whether from a supervisor, colleague, or client, can cause serious physical and mental health consequences. Ontario law provides strong protections, but you need to know how to use them. Every year, thousands of Ontario workers are forced out of their jobs by harassment they could have fought with proper documentation and legal knowledge.
Since 2018, WSIB has accepted chronic mental stress claims caused by workplace harassment. This means your suffering is not just recognized, it is compensable.
What Constitutes Workplace Harassment in Ontario?
Under the Occupational Health and Safety Act (OHSA), workplace harassment includes:
- Repeated vexatious comments or conduct that is known or ought to be known to be unwelcome
- Workplace sexual harassment, sexual solicitation, advances, or sexually charged remarks
- Bullying, intimidation, humiliation, threats, public embarrassment
- Psychological harassment, gaslighting, isolation, undermining, withholding information needed to do your job
- Cyber harassment, hostile emails, texts, social media targeting
- Discriminatory harassment, based on race, gender, disability, religion, sexual orientation, age
Not harassment (legally):
- Legitimate performance management conducted respectfully
- Reasonable workplace expectations and deadlines
- A single disagreement or interpersonal conflict
- Constructive criticism delivered appropriately and privately
- Organizational changes that affect your role (unless targeted at you specifically)
Health Impacts of Workplace Harassment
Research consistently shows workplace harassment causes measurable health damage:
| Condition | Prevalence Among Victims | Average Onset |
|---|---|---|
| Anxiety disorders | 60-80% | 2-6 weeks |
| Depression | 40-60% | 4-12 weeks |
| PTSD symptoms | 30-50% | 6-16 weeks |
| Insomnia/sleep disruption | 50-70% | 1-4 weeks |
| Cardiovascular issues | 20-30% | 6-12 months |
| Gastrointestinal problems | 25-40% | 2-8 weeks |
| Substance use increase | 15-25% | 4-12 weeks |
| Immune suppression (frequent illness) | 30-40% | 4-8 weeks |
Your Legal Options: A Step-by-Step Approach
1. Internal Complaint (Start Here)
- File with HR or your employer's harassment policy contact person
- Your employer must investigate within a reasonable time (typically 30-90 days)
- You are protected from retaliation for filing a complaint
- Document everything: dates, witnesses, exact words used
2. OHSA Complaint (Ministry of Labour)
- File if your employer fails to investigate, takes too long, or does not address the harassment
- The Ministry can order investigations, compliance measures, and fines
- No cost to file; can be done online or by phone
- Does not prevent you from also filing with HRTO
3. Human Rights Tribunal of Ontario (HRTO)
- If harassment is based on a protected ground (race, sex, disability, religion, etc.)
- Can award damages for injury to dignity ($10,000-$50,000+ in severe cases)
- Must file within 1 year of the last incident
- Free to file; no lawyer required (though recommended for complex cases)
4. WSIB Chronic Mental Stress Claim
- Workplace harassment causing mental health injury is eligible for WSIB since 2018
- Provides 85% of net earnings (tax-free) during recovery
- Covers treatment costs (therapy, medication)
- Requires medical evidence linking the condition to workplace events
- Must file within 6 months of when you knew the condition was work-related
Getting Medical Documentation for Stress Leave
When harassment makes you unable to work, you need documentation that:
1. Confirms your condition, Anxiety disorder, major depression, PTSD, adjustment disorder, or other diagnosed condition
2. States you are unable to work, Due to the severity of symptoms (not just "stressed")
3. Recommends time off, Specific duration for recovery (e.g., "4-6 weeks initially, to be reassessed")
4. Does NOT need to name the harasser, Your medical note should focus on your health, not workplace politics
5. Does NOT need to prove harassment occurred, That is for the legal process; your doctor certifies your health status
How Long Can You Take Stress Leave?
| Severity | Typical Duration | Benefits Available |
|---|---|---|
| Mild (adjustment reaction) | 1-2 weeks | ESA sick days + employer sick leave |
| Moderate (anxiety/depression) | 2-8 weeks | Short-term disability |
| Severe (PTSD, breakdown) | 2-6 months | EI Sickness Benefits (26 weeks) |
| Complex (ongoing legal proceedings) | 6-12+ months | Long-term disability |
Protecting Yourself: Documentation Checklist
Before going on leave, gather as much evidence as possible:
- Written records of harassment incidents (dates, times, exact words, witnesses)
- Emails, texts, Slack messages, or voicemails showing harassment
- Names and contact information of witnesses
- Any previous complaints you have filed (internal or external)
- Medical documentation of health impacts (doctor visits, prescriptions, therapy records)
- Copy of your employer's harassment and workplace violence policies
- Performance reviews predating the harassment (to counter any claims of poor performance)
- Your employment contract and any relevant policies
Common Employer Tactics (and Your Rights)
| Employer Tactic | Your Right |
|---|---|
| "We investigated and found nothing" | Request the investigation report; file with OHSA if inadequate |
| "You are being too sensitive" | Harassment is assessed objectively, not by the harasser's intent |
| Sudden poor performance reviews | Document the timing; this may be retaliation |
| Offering severance to "move on" | You do not have to accept; consult a lawyer first |
| Claiming you resigned by going on leave | Medical leave is not resignation; your job is protected |
How MedLetter Can Help
Our CPSO-registered physicians can provide:
- Sick notes for stress-related inability to work ($49, same-day delivery)
- Workplace accommodation letters for modified duties upon return
- Documentation supporting WSIB chronic mental stress claims
- Letters for EI Sickness Benefit applications
- Return-to-work documentation with appropriate conditions (e.g., no contact with harasser, modified reporting structure)
We understand the sensitivity of harassment situations. All consultations are completely confidential and your employer will never know the reason for your absence beyond "medical condition."
Frequently Asked Questions
Can I take stress leave without naming my harasser to my employer?
Yes. Your sick note only needs to state you have a medical condition preventing work. You are still recommended for career protection to disclose the cause to your employer. The harassment complaint is a separate process.
Will taking stress leave hurt my harassment complaint?
No, it actually strengthens it. Medical documentation showing health impacts demonstrates the severity of the harassment. Courts and tribunals take documented health consequences seriously.
Can my employer fire me while I am on stress leave?
No. You are protected from termination during legitimate medical leave. If they terminate you, this is likely constructive dismissal and/or reprisal, both of which carry significant legal consequences.
What if the harasser is my direct supervisor?
Report to their supervisor, HR, or your employer's designated harassment contact. If the harasser is the owner/CEO of a small company, file directly with the Ministry of Labour or HRTO.
How do I return to work after harassment-related leave?
Your return-to-work plan should include protections: no contact with the harasser, modified reporting structure if needed, and a gradual return schedule. MedLetter can provide documentation specifying these conditions.
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Sources: Ontario Employment Standards Act, 2000 (ESA, s.50), Ontario Human Rights Code (s.17), Accessibility for Ontarians with Disabilities Act (AODA). Last verified: August 2026.
Related Resources:
- Ontario Return to Work Letter Guide
- Ontario EI Sickness Benefits
- Online Sick Note Ontario
- New sick-note requests are temporarily paused while we review our service. We are not accepting new orders at this time.