How to deal with an alcoholic business owner?

The owner of our business doesn't come in very often, but he calls us from home and complains about everything that culd go wrong, even if it hasn't happened yet. He does this several times a day and it's worse when he has been drinking. He wastes a couple hours per day of peoples' time by doing this. Is there some tactful way to tell him to get off the sauce and let his business operate?