Chino

You're probably the only person who will listen to his quacking. He's more than likely burned every bridge before you.

If you can't step away from his issues, though they are detrimental to you, then you might be addicted to them just as much as he is addicted to the drug. Since you grew up in an alcoholic environment, it's entirely possible you learned and have deeply ingrained codependent behaviors.

Codependent No More is a great book that is always suggested here. Alanon and Naranon are 12 step recovery programs that are suggested too. They're great self help programs that help us break free from the chains (decisions and choices) that imprison us.

As far as work goes, if it's interfering with your work, you have choices. You can find another job or talk to his superiors. We're only as sick as our secrets and you're keeping his.