JKL is a retailer with more than 45 shops around the country.

JKL is a retailer with more than 45 shops around the country. The directors suspect that a serious fraud has occurred at one of the branches and a team of internal auditors has been sent to investigate

An analytical review investigation shows that sales revenue is in line with budget, but overtime payments to shop staff exceed budget by 20%.

How should the internal audit team proceed?