Occupational disease cohort statistics 

The table lists occupational disease claims, by workplace cohort and entitlement status, registered with the WSIB between January 1, 2000 and December 31, 2020*.

Cohort Name Allowed Not allowed Pending
Abitibi-Bowater 26  <5
Algoma Steel Foundry 387  777 
GE Peterborough 462  369  <5
Herbicide Spray Program 43  449 
INCO Iron Ore Recovery Plant 11 
Kidd Metallurgical Division <5 <5
Kitchener Waterloo Rubber Workers 85  345  <5
McIntyre Powder 111  115 31 
Neelon Castings <5 117 
Pittsburg Plate Glass
Plastimet Fire
Sunrise Propane Explosion <5
Ventra Plastics / Pebra 83  38  <5
Weyerhaeuser Construction Project 205  24


A workplace cohort includes a group of workers within a defined location or workplace claiming benefits for a work-related illness resulting from a common exposure(s).

The table includes occupational disease claims by cohort, not all occupational disease claims registered with the WSIB in total or for the employers/groups listed. For information on occupational disease claim statistics in general, please see our By the Numbers statistical report.

Due to the historical nature of the data reported, all cohorts may not be captured in the table. To report potential missing cohorts, please contact us at odprb@wsib.on.ca.

Please note that you must have a WSIB claim number to ensure that we have registered your claim to determine entitlement to WSIB benefits and services. If you are not sure if you have a claim registered with the WSIB for a work-related illness, or to file a new claim, please contact us at 1-800-387-0750.

Posted: February 12, 2021