Random observation,

I recently spent 3 months working in Boston, USA. I would go to my local bar most evenings and quickly caught on to the unwritten law that you tip the bar staff $1 with every pint (drink).

Now the argument is you got to tip the Staff because the minimum wage is only like $3, however over the course of an hour he would serve 100-200 drinks on average, taking into account he was often tipped more than $1 and NEVER not tipped.

This would mean his wage was around $200 on hour! Surely there is some catch servers and waiters in USA cannot be making this much otherwise everyone would be doing it, but I cannot see the catch he pocketed all this in cash.