Nah, Getting a piece is slang for sex. I just found a nice play on words in that piece work is one way of getting paid for certain services. Merely a coincidence.
Ah, you see in SA the black people often translate their given names to a westernised version (to make it easier for us whities to say). So if a prozzie happened to be named Jabulani, she would translate it to happiness. And piece work is what we call half day minimum wage housework - but could also refer to prostitution.