I've seen both sides of that. I guess it depends on what kind of work ethic one has. I knew one guy that didn't smoke, and just drank a little. Lazy butt-head didn't want to work. Then I've seen one guy that took a few hits off a joint before he started work (home repair job) and worked like a mad man. He had his "smoke" breaks, but he did (and still does) wonderful work. He takes pride in his work. Like I said, depends on what kind of intestinal fortitude a person has.

Take the road less traveled