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POLYGRAPH TESTING

Employers are often faced with misconduct or criminal activities in the work environment without knowing exactly where, how and by whom it is committed. We often want resort to Polygraph testing, but we are not sure what to do or whether it is worth doing.

Here is some information pertaining to Polygraph testing which should help to clarify some issues around Polygraph testing.

A Polygraph test is a test used to verify a person’s truthfulness and is often called a “Lie Detector Test”.

Polygraph testing is a fairly new concept in South Africa, especially in disputes relating to employment relationships. There is no legislation at the moment to control the use of the test or to protect the employee’s right against the abuse of the test.

It is against the Constitution of South Africa to compel a person to undergo a Polygraph test unless the person consents to the test in writing.

The individual must be informed that:

  • the examinations are voluntary;
  • only questions discussed prior to the examination will be used;
  • the individual has a right to have an interpreter, if necessary;
  • should the individual prefer, another person may be present during the examination, provided that person does not interfere in any way with the proceedings;
  • no abuse in whatever way will be allowed;
  • no discrimination will be allowed;
  • no threats will be allowed.

Employers are permitted to use Polygraph testing to investigate specific incidents where:

  • Employees had access to the property which is the subject of the investigation;
  • There is a reasonable suspicion that the employee was involved in the incident;
  • There has been economic loss or injury to the employer’s business e.g. theft of company property;
  • The employer is combating dishonesty in positions of trust;
  • The employer is combating serious alcohol, illegal drugs or narcotics abuse and fraudulent behaviour within the company;
  • The employer is combating deliberate falsification of documents and lies regarding true identity of the people involved.

The CCMA will accept Polygraphists as expert witnesses whose evidence needs to be tested for reliability. The Commissioner needs to determine the admissibility and reliability of the evidence.

A Polygraph test may not be interpreted as implying guilt but may be regarded as an aggravating factor especially where there is other evidence of misconduct. The results of a Polygraph test on their own are not a basis for proving guilt; it can only be used to support other evidence.

Contact Louise for any Human Resources or Industrial Relations queries or problems.

Louise van Rensburg
LvR HR Consulting

Tel: 021 671-9364
Mobile: 082 378 2044
E-mail: finops@telkomsa.net
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