There is work that one needs to do to run the body, and such work even animals have to do. This you need not call as work; this you can call as labor of living. If you are alive then you have to feed yourself. This even animals have to do. This is not work.
What is work? Work is that which you do in order to satisfy what you may call as your gaping consciousness or thirsty soul. That is what defines work. That is what you need to figure out.
Keeping this strict criterion in mind: I have to do that which will offer me contentment.