Legal dagga use poses challenges to workplace policies By Liam Ngobeni Share Pretoria - The 2018 Constitutional Court decision to legalise the consumption of cannabis âin privateâ has created a number of challenges for employers and employees, according to experts. Among them is the question on whether an employee could lose their job by consuming dagga outside working hours, especially in safety-sensitive industries where workers are prohibited from being under the influence of intoxicating liquor or drugs. This is among one of the legal and ethical dilemmas raised by medico-legal experts from the University of Pretoria in a recent research article in the South African Medical Journal.