Document name

Date of Injury

Document number

POL 04/2013

Acute injury means an injury caused by an identifiable work-related incident that results in immediate or near immediate symptoms.

Delayed onset injury means an injury caused by a single or series of work-related incidents or exposures over time that results in a delayed symptom onset.

Section 2(1)(r) of The Workers' Compensation Act, 2013 (the “Act”) states that "injury" means all or any of the following arising out of and in the course of employment:

1. the results of a wilful and intentional act, not being the act of the worker;
2. the results of a chance event occasioned by a physical or natural cause;
3. a disabling or potentially disabling condition caused by an occupational disease;
4. any disablement.”

1. The date of injury for acute injury claims is the date of the identifiable work-related incident.
2. The date of injury for delayed onset injury claims is the date the worker initially:
   1. sought medical care for the injury; or
   2. reported the injury to the WCB;

whichever occurs first.

3. The date of injury for communicable disease injury claims, although considered delayed onset, is the date the worker initially:
   1. sought medical care for the injury;
   2. reported the injury to the WCB; or
   3. informed the employer of the injury;

whichever occurs first.