Polygraph tests —commonly referred to as lie detectors—are increasingly used by South African employers in disciplinary investigations. While there is no statute specifically regulating them, polygraphs are legally permitted under strict conditions , and may play a valuable supporting role in proving misconduct. Used correctly, polygraph results have even contributed to decisions made on a balance of probabilities , which is the standard of proof in labour disputes. However, misuse or overreliance can lead to rulings of unfair dismissal.

In an age where trust and integrity are at the core of a company’s success, maintaining transparency among employees is essential. While pre-employment screenings, including polygraph tests, help ensure that the right individuals are hired, businesses are increasingly recognizing the importance of ongoing honesty checks throughout an employee's tenure. Periodic honesty screening polygraphs are becoming a valuable tool for businesses looking to maintain high standards of trust and integrity within their workforce. In this blog, we will explore the benefits of implementing periodic polygraph screenings to ensure the continued integrity and security of your organization.