Surge in medicinal cannabis use creates growing problem for WA's mining industry

The growing use of prescribed medicinal cannabis is creating a headache for WA mining companies. (ABC South West: Asha Couch)

Mining companies in Western Australia are standing down workers who legally use prescription cannabis, as they struggle to determine what level of use makes an employee unfit for work.  

Tom (name changed for privacy reasons) said he was stood down from working on a Fortescue Metals Group site for more than five weeks, and later resigned, over the confusion and stress caused by his legal use of medicinal cannabis.