A worker seeking to establish loss of earning capacity by reference to subcontracting rates must lead evidence of actual hours worked, expenses of operating as a subcontractor, and other relevant business costs — a simple multiplication of hourly charge-out rate by assumed full-time hours is insufficient. Where a worker runs a business and earns income, their current earning capacity is not nil merely because they cannot perform hands-on trade work. The distinction between imperfect evidence requiring broad assessment and impermissible speculation depends on whether the party has led the evidence within their power to produce.
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