AT825520 - Australian Workers’ Union Construction and Maintenance (Western Australia) Award 2003 [Transitional]
20.1 Where work is impracticable on any day through shortage of material, which shortage the employer could reasonably have avoided, the employee shall be paid for the time lost in such case.
20.2 Provided however, the employer may deduct payment for any day the employee cannot be usefully employed because of any strike or because of any breakdown of machinery or because of any stoppage of work by any cause for which the employer cannot be held responsible.