National Day of Mourning is observed every year in Canada on April 28 to commemorate those who have been injured, made ill or killed while on the job due to workplace hazards or incidents. The observance has a decades-long history, beginning in 1984. It was officially declared an annual day of remembrance the following year by the Canadian Labour Congress. In 1991, the day became a national observance, when the Workers’ Mourning Day Act was passed.
Every year on April 28, ONA members, staff and colleagues commemorate those who have been injured, made ill or killed at work. Health-care workers especially see some of the highest rates of workplace injuries and illnesses – more than construction, mining and manufacturing. A recent survey of CFNU members saw that over half of respondents experienced some type of violence or abuse related to their job in the past year.
We honour ONA members, including Brian Beattie, who died due to COVID-19; a member who passed away in a work-related car accident; Nelia Laroza and Tecla Lin who died after contracting SARS; and Lori Dupont, who was murdered while working at a Windsor hospital. The list of members who have passed away due to work-related issues sadly continues to grow.
The Ontario Nurses’ Association has been a leader in occupational health and safety issues that affect not only our members, but everyone in society. We will continue to advocate for members’ health and safety at the government, employer and Bargaining Unit levels.
Workplace injuries, deaths and illnesses are preventable.

Events
We encourage ONA members, family, and friends to join us in recognizing the National Day of Mourning by participating in events in your community.
Learn More
- Ontario Nurses’ Association - Workplace Safety
- Occupational Health and Safety: A Guide for ONA Members
- Workplace Violence and Harassment: A Guide for ONA Members
- Ontario Nurses' Association - Joint Health and Safety Committees
- Ontario Nurses’ Association - Workplace Safety & Insurance Board
- Sign up for ONA’s Health and Safety eBulletin, “On the Safe Side”
- Canadian Centre for Occupational Health and Safety
- Workers Health and Safety Centre
- Canadian Labour Congress – Workplace Health and Safety