Wharfie - someone who works on the wharves. Wharfies have very strong unions, and are often accused of being a pack of bludgers as Australian Wharves have among the lowest levels of efficiency in the world, whereas the wharfies seem to be earning packets (= a lot).
Take a break from drinking like the author of this article did - Read why and how in his book Between Drinks: Escape the Routine, Take Control and Join the Clear Thinkers