OHCOW

CROSH Conference
2026-01-23
The Annual Conference of the Centre for Research in Occupational Safety and Health (CROSH). This important event will feature seminars on respiration hazards in mining and other sectors, occupational exposures to silica and poor air quality, supporting worker mental health and wellbeing, and more topics.
Download a pdf of the full schedule here. REGISTER

Heart Month 2026
2026-02-01 08:00 - 2026-02-28 17:00 (America/Toronto)
February is Heart Month
February is Heart Month, an annual opportunity for individuals, groups, and businesses to raise funds and awareness for the prevention and treatment of heart disease.
February is also Preventative Health Awareness Month

As well as Heart Month, February is also officially recognized as “Preventative Health Awareness Month“. This grass roots initiative has grown into a national movement, and although its topic is broad, it includes the promotion of preventative measures to avoid heart disease such as not smoking, committing to a healthy diet, and prioritizing regular movement and exercise.
Links:
University Hospital Foundation Heart Month Page
Heart and Stroke Foundation Canada

OHCOW Webinars on Work-Related Heart Disease
Worker Particulate Exposure and Heart Disease: McIntyre Powder
Reviewing Clinical Experience & Current Research on Critical CVD Particulate Hazards, and Related Opportunities for Prevention
2024. In Canada, heart disease is the second leading cause of death, with 1 in 12 Canadians over the age of 20 living with a diagnosis. Smoking, unhealthy diet, and lack of physical activity are well-known risk factors. However, occupational and environmental exposures are also becoming increasingly recognized as important. Join Dr. Andrew Zarnke PhD, and Dr. Sandra Dorman PhD, as they explain the health effects of the inhalation of fine particles in the workplace, and the associated contribution to heart disease using McIntyre Powder as a case example.
Host: Dave Wilken, OHCOW, Chief Operating Officer
Speakers: Dr. Andrew Zarnke PhD, OHCOW, Project Director; Dr. Sandra Dorman PhD, Centre for Research in Occupational Safety and Health (CROSH), Director
Work-Related Heart Disease Webinar
A 2021 presentation made in partnership with the Center for Research in Occupational Safety and Health (CROSH) as part of the OCC-Disease Prevention webinar series and in the spirit of Heart Month.With presentations by Dr. Sandra Dorman, Centre for Research in Occupational Safety and Health (CROSH) and Andrew Zarnke, Occupational Health Clinics for Ontario Workers (OHCOW)
Dr. Sandra Dorman, Centre for Research in Occupational Safety and Health (CROSH). VIEW SLIDES [PDF]

World Cancer Day 2026
2026-02-04
See the commentary from the international World Cancer Day organization website.

Webinar: 11:30am to 1pm EST
OHCOW & OCRC on World Cancer Day shared research on occupational co-exposures of cancer and clinical case studies.
The Occupational Health Clinics for Ontario Workers (OHCOW) and the Occupational Cancer Research Centre (OCRC) this World Cancer Day explores occupational co-exposures and cancer risk through both research and clinical perspectives. OCRC presented findings from their co-exposures project on lung and bladder cancer, while OHCOW will follow with clinical work and case studies that illustrate the real-world impacts of multiple workplace exposures, linking research findings to practice.
11:30 AM – 12:15 PM
The Changing Landscape of Exposure and Cancer
Dr. Jeavana Sritharan – OCRC Scientist, Surveillance, Dr. Tracy Kirkham – OCRC Associate Director & Scientist, Shannon Halls – OCRC Research Associate, Fatima Ali – OCRC Research Associate
12:15 PM – 12:45 PM
A Clinical Perspective: Case Studies with Multiple Exposures
Lawrence Kurtz – OHCOW Occupational Hygienist
12:45 PM – 1:00 PM
Q&A

Repetitive Strain Injury Day
2026-02-28
A day to take account of ways to prevent and treat repetitive strain injuries, and to take note of the varying causes of such injuries. See details of OHCOW’s RSI Day Webinar Series.

Kidney Health Month 2026
2026-03-01 08:00 - 2026-03-31 17:00
From the Kidney Foundation: Meet your mighty kidneys this Kidney Health Month
March is Kidney Health Month in Canada. If you haven’t yet considered the way your mighty kidneys impact your overall health, now is the time. A first step to disease management and prevention is education. Learn more about your kidneys and explore our fact sheets and infographics.
Workers at Risk: Chemical exposures
Those exposed to X and Gamma radiation, and Trichloroethylene (TCE) are most at risk for contracting cancer through workplace exposure. It is estimated that approximately 7,600 Canadian workers are exposed to trichloroethylene. This includes those working in metal degreasing, fabricated metal product manufacturing, industrial painters, and more. Others at risk for different substances are firefighters, welders, print shop workers, those exposed to gasoline and diesel exhaust and other chemical compounds such as arsenic and cadmium. See the website for more info.
Carex Canada
Renal toxins, also a factor, include heavy metals, particularly cadmium (CAREX profile on cadmium link, CAREX cadmium occupational exposures),lead (CAREX profile on lead link, CAREX lead occupational exposures). Some pesticides are renal toxins, too. There is some evidence of shift work, long working hours, and high temperature may also be renal toxins (here).
Kidney Cancer Canada
Kidney Cancer Canada is a national community of patients, caregivers and health professionals who work to provide every Canadian touched by kidney cancer with support, education and advocacy for their care pathways and treatment options.

More Occupational Exposures: Miners, construction workers and more
Exposure in Canadian Mines
It has been known that exposure to radiation and certain chemicals can lead to kidney cancer. This paper by OHCOW Occupational Hygienists, Kidney Cancer and Exposures in Ontario Mines, discusses research on kidney cancer as it specifically relates to Ontario miners.
Silica Exposure
Exposure to silica has become a major concern, particularly in the construction industry. Many construction substances such as concrete, gravel and more that are ground, cut or treated result in silica dust that has severe health effects when inhaled. This dust can be imperceptible to people when they are exposed to it but over time can result in severe illnesses and cancer to organs of the body including kidneys.
See our information page on Silica.
If you or someone you know works in an industry where they might be inhaling silica dust, it is imperative that they utilize the FREE Silica Control Tool.
See our Silica Control Tool page.
Other Airborne Contaminants
See our Work Related Cancer page for more information about hazards and workplace controls. As well as radiation and silica, Renal (kidney) diseases can be caused by exposures to other metals, such as cadmium, lead, beryllium, and benzene.
Another field that has been identified for high risk for cancer is welding. The Occupational Cancer Research Centre has done research on welding and cancer risk. As well, the Australian Cancer Council has information about occupational hazards for renal cancer caused by welding, and controls for those carcinogenic substances that can be implemented at work.

Colorectal Cancer Awareness Month 2026
2026-03-01 08:00 - 2026-03-31 17:00
4th

most common cancer diagnosis

72

Canadians diagnosed every day

90%

curable when found early
The colon and rectum make up the last part of the gastrointestinal (digestive) system. Colorectal cancer is cancer that affects either the colon or rectum, or both. It may also be referred to as colon cancer or rectal cancer, depending on where the cancer originates.
Symptoms

Change to your Bowel Habits
Abdominal Pain and Discomfort
Other General Colorectal Cancer symptoms:

Unexplained weight loss
Weakness and fatigue
Anemia
Nausea and vomiting

Risk Factors
Genetics and lifestyle are the main determinants that increase the risk of Colorectal Cancer. It has been proven that exposure to some carcinogens, including in the work environment, can also increase risk.

Inflammatory bowel disease, such as ulcerative colitis
Having benign (noncancerous) polyps
A personal history of colorectal cancer
A family history of colorectal cancer
Inherited syndromes, such as Lynch syndrome
Genetic conditions
Not being physically active

Overweight or obesity
Alcohol
Smoking
Diet high in red meat
Diet low in fiber
Exposure to ionizing radiation

Since colorectal cancer almost always develops from precancerous polyps (growths), participating in regular screening can help to find and remove these polyps before they become cancerous.
Colorectal Cancer Canada has lowered the recommended age to begin screening from 50 to 45.

More Information
OHCOW Work Related Cancer Page
Colerectal Cancer Canada

https://www.colorectalcancercanada.com/
Colorectal Cancer Canada is the nation’s non-profit colorectal cancer patient organization. We are dedicated to colorectal cancer awareness and education, supporting patients and caregivers, and advocating on their behalf. Our goal is to reduce the incidence and mortality of colorectal cancer in Canada and to improve the quality of life for patients, their families and caregivers.

Canadian Cancer society

https://cancer.ca/en/cancer-information/cancer-types/colorectal

International Women's Day
2026-03-08
Women Who Built Workplace Safety
To commemorate International Women’s Day on March 8, OHCOW Occupational Hygienist Krista Thompson, MHSc, ROH, CRSP, with the International Hygiene Association (AIHA), has written an article describing the role that women have played throughout history in fighting for the rights and lives of workers. See Page.
International Women’s Day is a global day to recognize the social, economic, cultural, and political achievements of women and girls, and to reflect on the work needed to achieve gender equality. The first International Women’s Day was marked on March 8, 1911, when over a million people across Europe came together to support women’s rights, including the right to work, vote, hold public office and live free of discrimination. In Canada, it’s a time to celebrate progress on women’s rights and to recognize the ongoing work underway to support women and girls’ fully participation in all areas of society.
This year’s theme, Give to Gain, highlights the importance of taking meaningful steps to advance gender equality. International Women’s Day Website
EVENTS

Ottawa
March 5, 2026
Canadian Department of National Defense Event
IN PERSON AND VIRTUAL The Canadian Department of National Defense is honouring women in the services for International Women’s Day. The Defence co-Champions for Women, Sophie Martel and Lieutenant-General (LGen) Jamie Speiser-Blanchet, will host a hybrid discussion panel focused on the Give to Gain mindset – an approach centered around generosity, collaboration, and mutual support.
Thursday, March 5 at 1:00 to 2:30 pm EST

In-person: National Defense Headquarters Ottawa (Carling Campus) – Building 3 Atrium
Join virtually on the day: MS Teams (Live sound | English Only | French Only)

Department of National Defense IWD Event
Hamilton
March 3, 2026
The Hamilton & District Labour Council Women & Gender Equity Workgroup presents the 4th Annual Night of Comedy: Laugh Your Lips Off for International Women’s Day. Featuring TikTok Star Joanna Johnson and others!
Join us on March 3rd at the Hamilton Convention Centre. Everyone welcome!
This is a fundraiser in support of women and girls programs locally funded thru United Way Halton and Hamilton. Register HERE! REGISTER
Toronto
March 8, 2026, 6:00 to 10:00pm
The Dinner Party
A collaborative dinner for International Women’s Day: Join us for an unforgettable evening honouring women, community, and the power of food. Ten incredible women chefs will come together to create a five-course culinary experience. Proceeds go to Redwood and Nellie’s Women’s Shelter, helping provide safety, resources, and empowerment.
Cost: $180
Location: 50 Wade Ave, Toronto, ON The Dinner Party Registration
Caledon
March 8 from 10 am to 2 pm
Celebrate International Women’s Day with Fire Service Women Ontario
Celebrate and empower women in the fire service at Fire Service Women Ontario’s in-person International Women’s Day High Tea. Join us for an inspiring event dedicated to recognizing the incredible contributions of women across the fire service. With a panel of speakers.
Cost: $25
Location: 6215 Old Church Road, Caledon East, ON L7C 1J7 Info and Register
Toronto
March 7, 2026
RISE AND RESIST!UNITING FOR A NEW WORLD
IWD Toronto 2026
11AM Rally & 1PM March
OISE AUDITORIUM, 252 Bloor St. W., Toronto
All are welcome. Sign language services are available.
March 08, 2025
Saturday, March 8 is International Women’s Day and, for the 47th year, Toronto’s International Women’s Day March and Rally will bring crowds to the streets of Toronto, as supporters raise their voices for gender equality and social justice. (The United Steelworkers union is a participating organization.) This year’s rally theme is ‘Fighting for Our Lives. Building Our Resistance’ and will highlight both domestic and international issues. The rally will feature a line-up of powerhouse speakers. IWD Toronto
Ajax
March 5, 2026
Women who Lead
Join REVEL Durham for a powerful morning featuring Kathleen Black of Kathleen Black International as our feature keynote. Gina Roberts with Elevate HR Solutions and inspired panel discussions, along with meaningful networking and accomplished women in business. Enjoy a hot breakfast, mimosas, coffee and tea included, while connecting with like-minded women in a welcoming, energizing setting.
Cost: $50
Location: Hilton Garden Inn, 500 Beck Crescent, Ajax Get Tickets
Windsor
March 7-8
International Women’s Day Expo 2026
A powerful two-day celebration of women, wellness, and community. Shop, connect, learn, and leave inspired at the LaSalle Event Centre. Free and VIP tickets available. More Info
Woodstock
March 8
Women’s Day Brunch, featuring speakers and inspiring presentations.
Cost: $25
Time: 10am -2pm
Location: 26 Beale St., Woodstock, Ontario Get Tickets
Oshawa
March 8
Join the Oshawa Museum for the Tea & Talk series. Enjoy your tea and scones while Museum staff lead engaging historical discussions.
In honour of International Women’s Day, this month’s Tea & Talk celebrates remarkable women from Oshawa’s past!
Tickets for Tea & Talks are $15/person ($10 for members) plus applicable fees, and this includes unlimited tea and one scone served with jam and cream.
Tickets sell out FAST, so be sure to RSVP! Get Tickets
Kitchener
Friday March 6
The International Women’s Day Breakfast is an annual event held in partnership between the Greater KW Chamber of Commerce and respected community leader, Karen Redman.
The 2026 theme is #GiveToGain which encourages a mindset of generosity and collaboration. When people, organizations, and communities give generously, opportunities and support for women increase. Whether through donations, knowledge, resources, infrastructure, visibility, advocacy, education, training, mentoring, or time, contributing to women’s advancement helps create a more supportive and interconnected world. Get Tickets

Canadian Agricultural Safety Week
2026-03-15 08:00 - 2026-03-21 17:00
Celebrating Farm Safety Across Canada
Canadian Agricultural Safety Week (CASW) is an annual campaign held the third week of March of each year.
work to share information and resources to keep farming operations safe, healthy, sustainable and successful. You can be a part of this great campaign and remember, #FarmSafetyEveryday! Go To Webpage

Asbestos Awareness Week 2026
2026-04-01 08:00 - 2026-04-07 17:00
It has been known for many years now that THERE IS NO SAFE LEVEL OF EXPOSURE TO ASBESTOS according to:
The World Health Organization
Asbestos.com (The Mesothelioma Center)
United States Environmental Protection Agency
The Occupational Cancer Research Centre
Any exposure increases the risk of developing serious, and often fatal, diseases such as mesothelioma, lung cancer, and asbestosis, which can take decades to appear after exposure.
Asbestos Awareness Week
Asbestos Awareness Week was established by the Asbestos Disease Awareness Organization to provide information and promote measures to prevent deadly diseases related to exposure. See resources from OHCOW about the hazard of Asbestos. Find out more on OHCOW’s Asbestos Awareness webpage. Go to Asbestos Page

Parkinsons Awareness Month
2026-04-01 08:00 - 2026-04-30 17:00
April is Parkinson’s Awareness month, a time to focus on spreading knowledge, understanding and awareness of Parkinson’s disease. It’s also a time for celebrating the stories and courage of people living with Parkinson’s, their care partners and all the people contributing to Parkinson’s research. Parkinson’s is a complex brain condition, and everyone’s Parkinson’s journey is different. More than 120,000 people in Canada live with Parkinson’s.
Parkinson’s in the Workplace
It is proven that some workplace exposures and conditions can increase risk for Parkinson’s Disease. Ontario’s mine workers up until the 1980s were exposed to a potentially lethal substance known as McIntyre Powder, that caused debilitating health effects, including Parkinson’s, respiratory illness and early death. OHCOW has supported research, advocacy for the miners and their families affected and offers extensive information about this subject. Find out more on OHCOW’s Parkinson’s Disease webpage. Parkinson’s Disease Webpage

Cancer Awareness Month 2026
2026-04-01 08:00 - 2026-04-30 17:00
April is Cancer Awareness Month in Canada. Today, there are 1.5 million Canadians living with and beyond cancer. This month is a time to specially recognize our countless researchers, health care practitioners, volunteers, caregivers, policymakers, and community members who continue to innovate and advance cancer research and care across the country. To those living with cancer, and those who have lost loved ones, we acknowledge your courage and strength.
Learn About “Daffodil Month“, the Canadian Cancer Society’s information and funding drive to end cancer.

Cancer in the Workplace
In February on World Cancer Day, OHCOW partnered with the Occupational Cancer Research Centre (OCRC) to create a video about the ongoing research linking occupational exposures with cancer. It is available to view below. For more resources, see OHCOW’s page on work-related cancer. See Work Related Cancer Page

Occupational Health Nurses Week 2026
2026-04-05 08:00 - 2026-04-11 17:00
OHN (Occupational Health Nurses) Week is a national observance each April that celebrates and recognizes members of the occupational and environmental health nursing profession. While some people understand the functions of a nurse in clinical settings, this week serves as a way to bring attention and awareness to the thousands of OHNs who work in promoting and protecting the health of workers.
See the Website
The Canadian Association for Occupational Health Nurses
The COHNA is committed to promoting excellence in the practice of occupational health nursing and advancing health, wellness and safety practices in the workplace by:

Developing national standards and guidelines;
Fostering working relationships between Provincial/Territorial Associations;
Providing a forum for members to network, exchange knowledge and share expertise;
Influencing legislation and regulations to improve the health and safety of workers; and
Promoting the diverse role of the occupational health nurse to business, community, government and professional affiliates at every opportunity.

See the Website

World Health Day 2026
2026-04-07
World Health Day 2026: Together for health. Stand with science
World Health Day 2026, observed on 7 April, calls on people everywhere to stand with science. Under the theme “Together for health. Stand with science”, this year’s observance launches a year‑long campaign celebrating the power of scientific collaboration to protect the health of people, animals, plants, and the planet. The campaign spotlights both scientific achievements and the multilateral cooperation needed to turn evidence into action – through a strong focus on the One Health approach. See Website

World Parkinsons Day
2026-04-11
World Parkinson’s Day is April 11th. Help get the word out about the fastest growing neurological disease on the planet. This World Parkinson’s Day, we’re calling on those impacted by the disease to stand up, speak out and unite to end Parkinson’s. We can break the stigma around our disease, lead the call to fund medical breakthroughs and together we can put Parkinson’s in the past.
GO TO INTERNATIONAL WEBSITE

Canadian National Volunteer Week
2026-04-19 08:00 - 2026-04-25 17:00
Ignite Volunteerism: A year-long, nation-building celebration
International Volunteer Year is a once-in-a-generation opportunity to celebrate the power of civic participation and renew Canada’s culture of volunteering.
Ignite Volunteerism is a year-long effort to elevate the role of civic participation, rebuild volunteer infrastructure, and celebrate volunteer stories.
This National Volunteer Week (April 19-25, 2026) we will celebrate the ways in which people in Canada have ignited volunteerism in their communities, aligning NVW 2026 with Ignite Volunteerism, deepening our collective impact.
Water is in constant motion, always flowing, shifting, and transforming with every powerful wave or quiet ripple. And so is each volunteer’s contribution toward creating impact in our communities.
https://volunteer.ca/national-volunteer-week/ Ignite Volunteer Year WebsiteNational Volunteer Week

The World Day for Safety and Health at Work
2026-04-28
This day is to raise awareness about occupational safety and health and gives us an opportunity to talk about the causes of work-related injuries, diseases, and fatalities, and measures to prevent them.
See website

Day of Mourning 2026
2026-04-28
OHCOW commemorates April 28, a day to remember those whose lives have been lost or irrevocably harmed by workplace injury and illness.
Day of Mourning Statement from the Occupational Health Clinics for Ontario Workers, Inc.
The Day of Mourning is a day to remember that all too often workers are still paying the cost of unsafe workplaces, with their health and with their lives. The impact on families, colleagues and communities is enormous. When any worker is killed or suffers debilitating illness or injury due to work, it is an avoidable tragedy.
On the job injuries, illnesses and deaths are preventable. Their elimination requires continued vigilance and commitment on the part of employers, government, advocates and workers themselves — as well as necessary protections for those who speak up and fight for their right to safe and fair workplaces.
The Day of Mourning is a time for people to reflect, to grieve and to acknowledge that attention and action is still needed. We remember those who have paid the price, and the suffering caused to their loved ones and communities.
Every worker has the right to come home at the end of the day, and to not suffer injuries and illnesses due to their jobs. Events are taking place Monday and Tuesday across Ontario to honour the meaning of the Day of Mourning, and to make a promise to stand up for worker safety. At the designated time of 11am on Tuesday April 28, no matter where we are, we can honour this moment and pause for the cause of workers’ rights and the prevention of tragedies caused by unsafe workplaces.
For a full list of DOM events across Ontario, see the Ontario Federation of Labour website

Noise Awareness Day 2026
2026-04-29
Join individuals and organizations around the globe in celebrating the 31st Annual International Noise Awareness Day, on April 29, 2026. Help raise awareness of the harmful effects of noise on hearing, health and quality of life, and inspire positive action in your community.
There are so many reasons to be passionate about turning down the volume on noise, but it all comes down to this:
Protect Your Hearing, Protect Your Health!
International Noise Awareness Day page
OHCOW Resources

Noise Exposure Calculator
Go to Calculator
Noise-induced Hearing Loss (NIHL) Audiogram Calculator
Go To Calculator
Podcast: Top Ten Tools to Prevent Noise Induced Hearing Loss
Go to Podcast
Noise Induced Hearing Loss Web Page
Go to Web Page
Noise-induced Hearing Loss (NIHL) Webinar
Go To Webinar
Noise Exposures Page
Go to Web page

International Workers' Day 2026
2026-05-01
The First “May Day”
In the late nineteenth century, the working class was in constant struggle to gain the 8-hour work day. Working conditions were severe and it was quite common to work 10 to 16 hour days in unsafe conditions. Death and injury were commonplace at many work places and inspired such books as Upton Sinclair’s The Jungle and Jack London’s The Iron Heel. As early as the 1860’s, working people agitated to shorten the workday without a cut in pay, but it wasn’t until the late 1880’s that organized labor was able to garner enough strength to declare the 8-hour workday. This proclamation was without consent of employers, yet demanded by many of the working class.
At its national convention in Chicago, held in 1884, the Federation of Organized Trades and Labor Unions (which later became the American Federation of Labor), proclaimed that “eight hours shall constitute a legal day’s labor from and after May 1, 1886.” The following year, the FOTLU, backed by many Knights of Labor locals, reiterated their proclamation stating that it would be supported by strikes and demonstrations. On May 1, 1886, more than 300,000 workers in 13,000 businesses across the United States walked off their jobs in the first May Day celebration in history.
The sacrifices of so many people can not be forgotten or we’ll end up fighting for those same gains all over again. This is why we celebrate May Day.
From: https://archive.iww.org/history/library/misc/origins_of_mayday/
Canadian Unions: CUPE
International Workers’ Day is an opportunity to celebrate the union movement’s victories and recognize the importance of continuing our global fight for labour rights, equity and economic justice.
For more than a century International Workers’ Day has acknowledged and celebrated the achievements of the trade union movement. The list is long and includes the establishment of employment standards, occupational health and safety legislation, and old age security.
CUPE’s page for IWD
May Day: Celebrating the Trade Union Movement
Each year, workers across the globe celebrate May 1st, International Workers’ Day (May Day) as their Labour Day.
For more than a century International Workers’ Day has acknowledged and celebrated the achievements of the trade union movement. The list is long and includes the establishment of employment standards, occupational health and safety legislation, and old age security.
Commemorating the achievements of working people is important, but International Workers’ Day is also a reminder to continue the effort — and even more so, as factors such as globalization can only be countered by stronger solidarity.
So on May 1, International Workers’ Day we were reminded – as 21st century workers – to stand with each other around the globe in common purpose and solidarity, with people of different backgrounds and nationalities who share the same wish for workers’ empowerment.
UFCW page for IWD

National Physician's Day
2026-05-01
National Physicians’ Day in Canada is celebrated annually on May 1st. In 2026, this day falls on a Friday. It honors the birthday of Dr. Emily Stowe, the first female physician to practice in Canada, recognizing the dedication and care physicians provide to patients and the healthcare system.
Says the Canadian Medical Association: “In an era where Canadians are bombarded daily by information both real and fake, they continue to place the highest trust in doctors to provide quality health information and evidence-based care. Year-over-year trust in doctors remains exceptionally high providing much needed stability amidst a changing landscape. Doctors’ voices matter and are needed more than ever.”
Key Details for 2026:

National Physicians’ Day: Friday, May 1, 2026. This day, marked by the Canadian Medical Association (CMA), celebrates all Canadian doctors.
Purpose: To express gratitude for doctors’ commitment to patient care, particularly following challenges like the COVID-19 pandemic.
Provincial Celebrations: Many provinces, including Ontario, formally recognize May 1st for this purpose, with landmarks often lighting up in blue.
Actionable Appreciation: The Ontario Medical Association (OMA) and others often encourage thanking doctors through social media using #DoctorsDay.

See CMA Web Page

Speech and Hearing Month
2026-05-01 08:00 - 2026-05-31 17:00
May is Speech & Hearing Month in Canada!
May is Speech & Hearing month – a national opportunity to celebrate communication health and highlight the vital role of speech-language pathologists, audiologists, and communication health assistants. Their knowledge and experience supports Canadians of all ages in speaking, hearing, swallowing, understanding, and connecting with the world around them.
2026 Theme: Access Changes Everything
Access to speech-language pathology and audiology services can profoundly shape a person’s life. This year’s theme – Access Changes Everything – highlights how essential communication health services are across the lifespan. When individuals have timely access to these services, they experience stronger health outcomes, deeper social connection, and greater opportunities to participate fully in school, work, and community life. See Website

Bladder Cancer Awareness Month
2026-05-01 08:00 - 2026-05-31 17:00
From Bladder Cancer Canada: Every May, Bladder Cancer Awareness Month is recognized around the world. This month is an opportunity to shine a light on this often underrepresented form of cancer, and the many ways it touches the lives of Canadians…it is the 5th Most Common Cancer – more than 80,000 Canadians are living with Bladder Cancer Read More
Research
Occupational exposure to chemical and petrochemical industries and bladder cancer risk in four western Canadian provinces
In 2004 the Public Health Agency of Canada published a paper that concluded environmental exposure to certain chemicals has been linked to increased risk of bladder cancer, second only to smoking in terms of risk factor. Read Paper
Occupational workplace dangers of bladder cancer continue to swell despite improvements in risk knowledge and materials
In 2015 the Canadian HRReporter cited research from the Occupational Cancer Research Centre with Cancer Care Ontario and other sources that concluded “Occupational exposure to carcinogens is to blame for the rising rates of bladder cancer in workers.” It notes certain exposures are known to increase risks of bladder and other cancers. Read Article
Video
On Canadian Cancer Day, February 4, OHCOW teamed up with theOccupational Cancer Research Centre (OCRC) for a video on occupational co-exposures of cancer and clinical case studies.
This World Cancer Day video explores occupational co-exposures and cancer risk through both research and clinical perspectives. OCRC presented findings from their co-exposures project on lung and bladder cancer, while OHCOW will follow with clinical work and case studies that illustrate the real-world impacts of multiple workplace exposures, linking research findings to practice.
The Changing Landscape of Exposure and Cancer
Dr. Jeavana Sritharan – OCRC Scientist, Surveillance, Dr. Tracy Kirkham – OCRC Associate Director & Scientist, Shannon Halls – OCRC Research Associate, Fatima Ali – OCRC Research Associate
A Clinical Perspective: Case Studies with Multiple Exposures
Lawrence Kurtz – OHCOW Occupational Hygienist

Construction Safety Week
2026-05-04 08:00 - 2026-05-08 17:00
RECOGNIZE • RESPOND • RESPECT
Construction Safety Week has long been a powerful show of force, a catalyst for bringing the industry together and putting a spotlight on the critical importance of health and safety. The construction industry represents one of the largest employment sectors in the world—and with that scale comes immense responsibility, and opportunity.
Over the last decade, we’ve made meaningful strides: advancing best practices, transitioning from hard hats to helmets, shedding light on vital issues that affect health and safety, like mental health, fostering a culture of care and accountability, and creating partnerships and initiatives for improving jobsite safety. See Website

FROM OHCOW
The Silica Control Tool
Save Lives and Preserve the Health of Workers
Construction Workers are at high risk of illness as well as injury. Research has proven the harmful and sometimes fatal effects of crystalline silica, a very fine dust that can cause respiratory illness and cancer when inhaled. This dust is present when construction materials such as glass, concrete, asphalt, and other substances are grinded, sawed or crushed.
If there is even a chance that workers are being exposed to silica dust the FREE Silica Control Tool should be in use. For more information on who is at risk, and links to free registration for the Tool, check out our web page. The tool is available in French and there is a version created especially for surface mining. Go to SCT Page
Hand Arm Vibration (HAVS)
Hand-arm vibration is the transfer of vibration from a tool or workplace to a worker’s hands or arms. It is common for construction workers who handle drills and other heavy hand-held equipment.
The level of hand-arm vibration is determined by measuring the acceleration of the tool or object grasped by the worker. It effects the the circulatory, nervous and musculoskeletal systems of the worker and can lead to serious injury.
OHCOW resources included a web page with links to video resources, an info sheet with access to a pdf download to print out or send, and a new three-part informative video. See Links below. HAVS Web Page HAVS Ergo Info Page HAVS Video Playlist

Safety and Health Week 2026
2026-05-04 08:00 - 2026-05-09 17:00
Safety and Health Week is an annual opportunity to focus employers, workers, partners and the public on the importance of preventing injury and illness in the workplace, at home, and in the community.
This national event recognizes that the prevention of injuries and illnesses is essential to our physical safety, mental health, and overall well-being.

See the Website

Join the Virtual Launch on May 4
Monday, May 4, 2026 | 11 am EDT
Join CCOHS and the national partners, Health and Safety Professionals Canada (HSPC) and Threads of Life, as we virtually kick off Safety and Health Week 2026. We will hear from a Threads of Life family speaker, who will share their deeply personal experience and how they are impacted by the loss of a family member due to a workplace-related tragedy. Finally, we will showcase the top videos from the Focus on Safety National Youth Video Contest and announce the winner live. This exciting start to Safety and Health Week 2026 serves as a powerful reminder to renew our commitment to safety and well-being in workplaces, homes, and communities. Live French audio interpretation available. Space is limited.

Register for Launch

Safety and Health Week Events
Events are happening across Ontario!
Steps for Life in Toronto, Kingston, Sarnia and more…. Participate in this 5-km family walk that aims to educate the community. It highlights the ripple effects of workplace tragedies.

See Safety and Health Events

Mental Health Week 2026
2026-05-04 08:00 - 2026-05-10 17:00
CMHA Mental Health Week Website
This Mental Health Week, the CMHA is encouraging people across Canada to look beyond the surface and see the whole person. By embracing honesty and vulnerability, we open the door to deeper connections and the mental health benefits that come with it. In doing so, we can create a ripple effect of courage and understanding across the country.
Importance of Connection
Come Together, Canada: Stronger Connections. Better mental health
Social connection is essential to overall health and well-being. But too many people are feeling alone. In Canada, millions of people say they feel lonely often or always. This May 4-10, CMHA is inviting people across Canada to Come Together. It’s a call to spark small, everyday actions of connection, and to recognize the role we all play in supporting mental health through connection.
Together, we can strengthen mental health, build healthier communities, and help more people feel connected. CMHA Web Page
OHCOW’s Workplace Mental Health Webinar Series
Mayday! Mayday! Webinar series will be starting on Friday May 1, and continuing for the next 4 consecutive Fridays in May. For more info see the web page. OHCOW Mayday Mayday Web Series Download the CMHA poster, part of their Mental Health Toolkit for the workplace.

National Nursing Week
2026-05-11 08:00 - 2026-05-17 17:00
OHCOW’s Occupational Health Nurses
During Nursing Week we especially appreciate our Occupational Health Nurses (OHNs). OHNs use an inter-disciplinary team approach to address health and safety concerns in the workplace. Find out more about the role of nurses in occupational health on our About Page. The Role of the Occupational Health Nurse at OHCOW
In celebration of National Nurses Week 2024 “Our Nurses. Our Future”, several of our OHCOW Occupational Health Nurses discuss the nursing role in our organization, and how our nurses can assist Ontario workers and their families. Hear Podcast
Nursing Week 2026
From the Ontario Nurses’ Association: During Nursing Week, we celebrate the dedication, expertise, and achievements of registered nurses (RNs), registered practical nurses (RPNs) and nurse practitioners (NPs.) This year, for ONA nurses, Nursing Week is being held May 11-17. Our 2026 Nursing Week theme is:
Experts in Care, Fighting for Change.
This theme highlights the value and expertise that nurses bring, particularly in an era where their positions are being cut and eroded. Our members are trustworthy voices advocating for high-quality public health care in every sector. Ontario Nurses’ Association Website The Registered Nurses’ Association of Ontario (RNAO) has defined this year’s them for Nurses’ week as Empowered Nurses Save Lives. In keeping with that theme, RNAO and its chapters, regions without chapters, and interest groups have organized an exciting lineup of free events that offer something for every nurse and nursing student. This theme highlights the value and expertise that nurses bring, particularly in an era where their positions are being cut and eroded. Our members are trustworthy voices advocating for high-quality public health care in every sector. Many online and in person events are taking place this week!
See events:
May 12, 2026, 10 a.m. to 11AM
Designing Evidence-Driven Nursing Education
May 12, 2026, 7 p.m. to 8 p.m.
The Handover: A Nurse’s Last Shift
May 13, 2026, 11 a.m. to 12 p.m.
Mapping Your Path to Career Success
& more! See all RNAO Nurses’ Week Events

Injured Workers Day
2026-06-01
Every year on June 1st, Ontarians pay respect to the hundreds of workers who have died or become injured while working on their job sites. The Ontario Injured Workers Day is an opportunity to recognize the individuals who have suffered injuries and fatalities as a result of their workplace conditions.
Bill 118, the Injured Workers Day Act
In Ontario, we owe a debt to Sudbury MPP and NDP Labour critic Jamie West, who in 2024 pushed to have June 1 officially recognized as Ontario’s Injured Workers Day. He introduced his Private Member’s Bill, Bill 118, the Injured Workers Day Act, in the Ontario legislature. Because of this Act, June 1 of every year will be formally recognized as Injured Workers Day. See OHCOW page about this achievement.
Read Bill 118, Injured Workers Day Act, 2024, S.O. 2024 here.
See the Ontario Federation of Labour Page here.
See the UFCW Injured Workers page here.
See Injured Workers’ Day WebsiteCanadian Labour Congress
Protests at Queen’s Park and Across Ontario!
On June 1st every year, injured workers and labour activists gather outside the Legislative Assembly at Queen’s Park in Toronto and in cities across the province to mark Injured Workers’ Day. We rally on this day to celebrate the gains made through united action, raise current concerns – and remind governments we cannot be ignored.
Key Details for 2026 Injured Workers’ Day:

Location: Queen’s Park, Toronto (Legislative Assembly of Ontario).
Time: 11:00 AM (June 1st).
Purpose: To fight against attacks on the workers’ compensation system
Action: In addition to Toronto, other actions are held across Ontario, including locations in Hamilton, London, Windsor, and Thunder Bay.

Injured and ill workers across Ontario will gather on Monday to mark the 44th Annual Injured Workers’ Day.
ONIWG is calling attention to ongoing injustices faced by injured workers. Events Across Ontario

Brain Injury Awareness Month 2026
2026-06-01 08:00 - 2026-06-30 17:00
Brain Injury on the Job
1. Immediate Action & Reporting

Report the Injury: Notify your supervisor immediately and seek medical attention. Ensure a formal report is filed.
File a WSIB/WCB Claim: Contact your provincial workers’ compensation board to initiate a claim for lost wages and medical coverage. For example, Ontario workers can use the WSIB Mild Traumatic Brain Injury Program of Care for community-based early recovery and occupational support.

2. Returning to Work

Workplace Accommodations: Employers are legally obligated to accommodate recovering employees to the best of their ability. This often involves modified hours, ergonomic adjustments, or reduced workloads.
Planning: Use the Brain Injury Canada Return to Work Guidebook for practical self-assessments, checklists, and strategies on how to transition back to employment successfully.

Ontario Brain Injury Association
This year’s focus:
When Overdose Doesn’t Kill – But Still Harms – Ontario Brain Injury Association Raises Alarm
Overlooked Consequences of Overdose & Brain Injury Go to Site This June, Brain Injury Awareness flags will be raised at city halls, municipalities, and community locations across Ontario.You can be part of the movement by flying a virtual flag online!
Update your social media profile photo, LinkedIn profile, virtual background, or email signature throughout June to show your support for individuals and families living with brain injury.Find Digital Resources Here.

Opioid overdose and Brain Injury
Opioid overdoses can have catastrophic results, including brain injury. Brain injuries present new challenges and changes that can be difficult to cope with, particularly if the survivor is also trying to cope with substance use.
Drug poisoning occurs when a toxic amount of one or more substances is introduced into the body, a situation commonly referred to as an overdose. Overdose risk is influenced by multiple factors, including the amount of substance taken, changes in substance tolerance, the use of multiple substances (knowingly or unknowingly), and the physiological effects of substances, such as suppression of breathing, consciousness, or other vital functions. Go to Opioid overdose page

In Canada, June is Brain Injury Awareness Month. Each year national, provincial, and local associations run campaigns to increase awareness about the prevalence of brain injury, the obstacles that exist for those with brain injury, and the need for more services and support at all stages of recovery.
This Brain Injury Awareness Month, we are going Beyond the Injury to raise awareness of brain injury and its profound impacts on all aspects of daily life, for individuals and for family/caregivers.
Our goal is to generate more national awareness and understanding of brain injury, and to raise money to continue developing programs and resources that will improve the lives of all Canadians living with brain injury. Go to Brain Injury Canada

Men's Health Month 2026
2026-06-01 08:00 - 2026-06-30 17:00
Suspenders ON!
This June, get your Suspenders On for someone you care about.
Suspenders On is a Canadian Men’s Health Foundation campaign for Men’s Health Month. It’s a simple, visible way to show up for the men in your life and help start the conversations that matter. See the 2026 Campaign
Listen to a Podcast that Adresses Men’s Issues
Listen to real conversations with influential Canadians, athletes, health experts, and men who’ve lived through crisis, tackling mental and physical health, stress, and resilience. Better health starts when men stop carrying it alone. Hear Podcast
Answers to Questions on Men’s Health
The Canadian Men’s Health Foundation Website has a section dedicated to providing answers for questions about the most common men’s health conditions. Whether it is Colorectal Cancer or other cancers, Depression, Erectile Dysfunction or Heart Disease and more, they provide professional advice and links to get further counselling and treatment. CMHF Men’s Health Conditions .
Health Canada and the Public Health Agency of Canada have many online resources on Men’s health and life issues, including family life and work-life balance. Government Page on Men’s Issues
Each year, the week leading up to and including Father’s Day is Men’s Health Week — an excellent opportunity to reflect on and raise awareness about the importance of the health and well-being of Canadian men. Some organizations such as The Canadian Men’s Health Foundation designates the entire month of June as Men’s Health Month. In 2017, The provincial government started a partnership with the Canadian Men’s Health Foundation to promote healthier lifestyles for men. In 2021, the Canadian Institutes of Health Research published information about the health of boys and men in Canada, looking at mental health and wellness, violence, disease, accident rate, and physical activity.
Last year the 2025 Men’s Health Report was published, and contained concerning reports of the health of Canadian men, physically and mentally.
In the workplace, it is known that men are less likely to seek support for mental health, depression and emotional distress. In 2023, research was done specifically on the mental health of workers in the skilled trades, and found a connection between physical safety on the job and mental health.

Workplace Mental Health Webinar Series

OHCOW’s Mayday, Mayday Webinar series has featured sessions on mental health in male-dominated trades, such as the 2023 webinar, Crisis Planning for Worker & Responder Mental Health.
See the playlist for the 2025 Mayday, Mayday here.
Additional resources:
Government of Canada
Canadian Mental Health Association

National Indigenous People's Day
2026-06-21 08:00 - 17:00
National Indigenous Peoples Day events in Toronto The following pdf details the information shared in an OHCOW all staff meeting regarding the significance, history and meaning of June 21.
The Summer Solstice is a significant marker in many cultures. Being the longest day of the year, it is a “threshold” day holding deep spiritual and cultural significance for many Indigenous peoples.
As mentioned in the document, there is an art exhibition in Windsor entitled Water Protectors Exhibit for National Indigenous Peoples Day featuring work by Indigenous artists.
The document also includes notes about the history of the commemorative day and a link to a map showing events throughout the province, as well as links to Indigenous artists, information about collaborative partnerships, and territory acknowledgements. Ontario is addressing the alarming increase in cancer, diabetes, heart disease and respiratory diseases among Indigenous peoples. A report entitled “Path to Prevention – Recommendations for Reducing Chronic Disease in First Nations, Inuit and Métis”, which is focused on chronic diseases and health inequities in these populations in Ontario.
The report identifies risk factors for these communities as tobacco use, alcohol consumption, physical inactivity and unhealthy diets. The policy recommendations were developed through extensive engagement with First Nations, Inuit and Métis communities, the Government of Ontario and non-government organizations. There was a process for validation by First Nations, Inuit and Métis to ensure the recommendations accurately reflects the priorities of their communities.
The report is a key part of the Aboriginal Cancer Strategy and a companion report to Taking Action to Prevent Chronic Disease: Recommendations for a Healthier Ontario. SEE REPORT
