"Drinkers earn 10 to 14 percent more money at their jobs than nondrinkers and men who drink socially, visiting a bar at least once a month, bring home an additional 7 percent in pay, according to a new Reason Foundation report by economists Bethany Peters, Ph.D., and Edward Stringham, Ph.D."
From here. A Reason study. I think it's funny that people with Ph.D's are studying this. And they are doing it on the Reason website. Which is mostly a conservative website. And really, it was the conservatives who slammed through the 21 year old drinking age in the 80's -- thus ensuring that as kids go to college, they spend most of their college career (a time widely perceived to be about becoming an adult) learning how to cheat the system to get booze. Their first life lesson as an adult comes in the form of learning how to cheat.
And it turns out, they might make more.