Well I my i can guess that u r a really caring person .

U care about your co workers thats really good.

If he sells thats because people buys and may be even your manager buys from him .

So i thnk u should mind ur own business and let him do what he wants .

And if he gets caught its his problem nothing will happen to you .

By the way have u ever tried smoking weed .

If not Call that freind buy some tommoro and try it just for experience mate.

Its awesom mate it makes u feel u r the king of the world ...

So try it ha