If employees, in high-trust environments, are required to take polygraph tests a clause stipulating this should be in all contracts of employment. Always have evidence available about the validity and administration of the test. The case of Lekhoba and others / Atlehang Staff Solutions (Pty) Ltd – (2019) 28 CCMA outlines a matter in which employees were told that they needed to take a polygraph test but this requirement did not appear in their employment contract...