In workers compensation claims involving diseases of gradual onset, the compensable disease is the disabling symptoms precipitated by work, not the underlying pre-existing condition. A worker's ignorance of the medical cause of a gradually developing condition constitutes 'other reasonable cause' under s 37(1) of the Workers Rehabilitation and Compensation Act 1988 (Tas) for failure to give timely notice. A Commissioner's failure to address a statutory dispensation provision specifically raised by a party is an error of law vitiating the decision.
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