Let's assume the following scenario. One early morning, at work, you walk to the coffee maker to refill your coffee mug. When you get over to the coffee maker, two individuals are there talking. Based off of the strong smell in the general area, it is quite evident that one of these individuals has been consuming alcohol. Furthermore, let's assume that one of them works on a plant floor and operates heavy machinery which is quite dangerous.
What should you do in such a circumstance? If both of these individuals were office workers, it might be worth forgetting since you're not sure who the individual is who may have been drinking. However, there is a chance that one of the two could be putting themself and others in serious danger, due to the nature of their job.
You would never want to accuse someone of committing such a serious offense without reasonable proof.
This one is a bit of a sticky wicket. Could anyone offer any guidance?