Effective cannabis testing protocols for workplace safety in South Africa post legalisation: Navigating the new normal

Abstract

The legalisation of private cannabis use in South Africa presents significant challenges for occupational health, especially in safety- sensitive environments. This article analyses the medical, legal and ethical issues surrounding workplace cannabis use, focusing on the pharmacodynamics and pharmacokinetics of delta-9-tetrahydrocannabinol (THC), the primary psychoactive compound. The recent legal precedent that critiques the effectiveness of zero-tolerance policies is reviewed, and the establishment of per se THC thresholds that are medically and legally sound is proposed. The study advocates for a tailored approach to risk categorisation and testing protocols in workplaces, aiming to support occupational health professionals in developing policies that are effective, ethical and compliant with legal standards.