Mudau Supply (Pty) Ltd (Mudau) is involved in the warehousing and distribution of breakfast

cereals. Mudau noticed a substantial increase in stock losses in its warehouse. Approximately

R14 500 worth of stock was lost over a period of 5 days in June 2022. The site has a high level

of security with guards inside the warehouse and at access gates. Employees are searched

before leaving premises and there are cameras situated all around the warehouse and on the

outside of the building as well. Notwithstanding that, Mudau faced severe stock losses. Nobody

knew how exactly the stock was removed or where it was taken. The video surveillance did not

show any employees removing the stock and no employees were caught with stock in their

possession. All employees who were on shifts during those times (eight in total) were sent for

polygraph testing, including two stock takers, the cage loaders, dispatch clerks and the vehicle

loader who took the goods out of the cage and put them in the truck. Mudau has a clause in its

employment contract which obligates employees to undergo polygraph testing when requested

to.

With reference to the relevant legislation and case law, discuss when may a polygraph test be

used and how a chairperson of a disciplinary committee should use such evidence.