By insisting that all potential new employees complete a Drug and Alcohol test allows you as the employer the opportunity to gain an understanding if the potential employee has in the past engaged in the use of illicit drugs. Understanding this allows you to make a clear decision to whether you want to introduce that behaviour into our business. It also deters potential employees from applying if they know that they will be tested at pre employment stage and potentially ongoing in your business. Therefore, removing a future risk to the safety of your staff and business.