The deemed employer provision in s 175 of the Workers' Compensation and Rehabilitation Act 1981 (WA) extends to the constraints on common law damages in Part IV Division 2. Workers suing deemed employers (principal contractors) must comply with the same statutory restrictions — including leave requirements and disability thresholds — as apply to claims against actual employers. The purposes stated in s 3 of the Act are not exhaustive, and the 1993 amendments enlarged the Act's purposes to encompass constraints on common law damages.
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