Everyone needs to pitch in, you need to serve humanity so that it provides you with the things you need. If the only thing you can do to do your part is sanitation work, then sanitation work it shall be. That is, until you find new ways to serve others.

Slavery is something altogether different, and you really have to be in a position of privilege to conflate the two. The history of slavery is an incredibly dark one. Out of respect to those who've suffered under it's cruelty, I don't think it's right to use that word in this context. Doing your part is not slavery.