Yukon Workers' Compensation Health and Safety Board

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Policy EN-07 - Pre-Existing Conditions

Effective Dates

July 1, 2008 to July 1, 2015



General Information

Where a factor other than the work injury is negatively affecting the worker’s ability to return to the pre-injury earning level it is important to identify them as soon as possible.  

For the purpose of this policy, a pre-existing condition is any condition unrelated to a work injury which may affect recovery or the extent of injury. Pre-existing conditions may be known to exist prior to a work injury (usually because they caused symptoms), or they may develop post-injury.

Where a worker has completed necessary medical treatments but his or her ability to return to the pre-injury earning level is negatively affected by a pre-existing condition, compensation entitlement may be adjusted to reflect the impact of the pre-existing condition.


This policy provides direction to Yukon Workers’ Compensation Health and Safety Board (YWCHSB) decision-makers concerning claims that may involve pre-existing conditions.