Bob Dylan is right, but it's not my boss. The first person I must serve is me. Then, my family and those who I care for. Oh, and the cats.
All others are just means to an end, I am not their servant. I want to provide for my family and me? Alright, I make a deal with my boss. 30-40 hours of my time and skill for x of his money. That is a normal transactional business, nothing more, nothing less. He needs work done, I have the skill, just a fair exchange. No-one has a large leverage of power.
Of course we know the power shifts, when there's an abundance of workers or a lack thereof, but we still aren't servants.