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Substance abuse and the Workplace
Zero tolerance sounds straightforward — until a positive test, a privacy challenge, or unreliable breathalyser result turns your disciplinary case on its head. This workshop unpacks the critical legal distinctions between being under the influence, intoxicated and merely testing positive, with a sharp focus on alcohol and cannabis in the workplace. Delegates will explore the latest case law on breathalyser admissibility, observation tests, cannabis privacy rights and why blanket zero-tolerance policies are increasingly being struck down as disproportionate. Walk away with the knowledge to design a substance abuse policy that is legally compliant, evidence-ready and fair.
DATE: 24 July 2026
DURATION: 3 hours
TIME: 10:00 – 13:00
PRICE: R750 per person excl VAT
Here’s what we will be covering:
- Understanding Zero Tolerance
- Definition and purpose of zero tolerance in the workplace under South African law.
- The limits: Why dismissal is not always justified and what proportionality means.
- Under the Influence vs Testing Positive
- Legal distinction between being “under the influence,” “intoxicated,” and merely testing positive for an intoxicating substance.
- Alcohol
- Admissibility and Reliability of Breathalyser Tests
- Are breathalyser results sufficient and reliable for disciplinary hearings? Practical steps for compliance and evidentiary value.
- The importance of calibrated devices and trained personnel.
- Importance of Observation Tests
- Why physical and behavioural observation remains critical for proving impairment, especially where testing technology may be challenged.
- Recent disputes and outcomes relying on observation vs breathalyser results: Relevant case law.
- Admissibility and Reliability of Breathalyser Tests
- Cannabis
- Right to Privacy vs Employer’s Duty to Safety
- Update on the right to private cannabis use (Minister of Justice v Prince, Enever v Barloworld) and how it intersects with occupational health and safety obligations.
- Proportionality: Blanket zero-tolerance policies found to be overbroad and irrational by the LAC if they invade privacy and do not serve a legitimate safety purpose.
- Testing: Intoxication – Urine vs Saliva?
- Comparison of urine versus saliva testing: which route to go.
- Scientific and legal considerations for choosing tests; implications for policy and fairness.
- Right to Privacy vs Employer’s Duty to Safety
- What should be in your policy
- Clause essentials: Scope, purpose, prohibited conduct, testing procedures, privacy rights, consequences and support measures.
- Legal compliance: Consent for testing, confidentiality, progressive discipline, accommodation for medicinal/rehabilitating employees.
PLEASE NOTE: No recordings available. Slides are available to attending delegates. Fees are charged per delegate and not per screen.
Please notify me when a date has been set for this webinar
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