In workers' compensation suicide cases, the 'results from' requirement in s 25 of the Workers Compensation Act 1987 requires only material contribution, not proximate cause. A finding that the worker's power of volition was seriously compromised (dethronement of volition) is a finding of fact that can be made on lay evidence without expert medical evidence of insanity. Total dependency of a child on a worker is not incompatible with the worker's spouse in fact providing support where the worker was under a legal obligation to maintain the child. The Court doubted but did not decide whether the traditional insanity inquiry remains necessary in suicide cases, and left open whether s 14(3) applies to death by suicide.
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