Day of Mourning

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Reported fatalities for the Day of Mourning

The National Day of Mourning occurs annually on April 28, to honour those who have died, been injured or suffered an illness in a workplace. The Day of Mourning was enshrined in national legislation by an act of parliament on February 1, 1991.

Each year on the Day of Mourning, the WSIB and the Ministry of Labour report fatalities that occurred in Ontario workplaces. The Day of Mourning fatality statistic is a province-wide fatality number and includes all workplaces in Ontario, not just those covered by the WSIB. The number is fully reconciled with the WSIB, the Ministry of Labour and the Chief Prevention Office. In 2017, there were 227 individuals who died from a work-related injury or illness in Ontario.

It is important to note that the different methodologies used for reporting fatalities for various purposes can result in different statistics being reported. The following describes why WSIB fatality statistics differ from the Day of Mourning statistics.

The WSIB traumatic and occupational disease fatality statistics only include those workplaces covered by the WSIB under the Workplace Safety and Insurance Act. They include traumatic fatalities that occurred in the year specified as well as occupational disease fatalities for which entitlement was granted in the previous year, although the fatality may have occurred years earlier. Workers who passed away while in receiving 100 per cent permanent disability benefits granted under a pre-1990 legislative framework are not included. The WSIB recognizes these individuals were employed in an Ontario workplace, suffered from a permanent disability, and have since passed away. The WSIB is unable to confirm these deaths as being related to the original injury or illness, and therefore they are not included in our annual fatality reporting.


The provincial number includes Ministry of Labour fatalities for people not covered under the Workplace Safety and Insurance Act, as well as those occupational disease fatalities where the death occurred in the specified year. This number differs from WSIB-only statistics where occupational disease fatalities are reported when entitlement has been granted for survivor benefits within the specified year. For more information on fatalities related to the Day of Mourning please visit the Ministry of Labour website at