A brown nose who has advanced beyond the ass lick and ass kiss stages. One who truly enjoys the work. No humiliation or inconvienience will deter their attempt to impress, compliment, or patronize their perceived superior.
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".