A defence under s 175 of the Workers' Compensation and Rehabilitation Act 1981 (WA) must plead with sufficient clarity the contractual works, the connection between the worker's injury and the execution of those works, and which limb of the definition of 'disability' in s 5 is relied upon. A worker's mere presence on premises for the purpose of performing contractual works is not of itself sufficient to establish the necessary connection where the injury arose from non-contractual works. The question of the precise nature and extent of the required connection between injury and contractual work remains open.
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