Minimum wage is often paid by some of the most physically and emotionally intensive work—service industry jobs. Having to work in a hot kitchen all day or deal with irate customers while being paid less than you need to survive is not exactly the best situation to be in.
It's easy to misunderstand words if you've only read them. Be honest, how many of us mispronounced 'chameleon' the first seven times you read it before your 2nd grade teacher informed you how it was properly pronounced? A lot. However, what about those phrases and common terms you just know you misheard but feel too embarrassed to say anything?