Nature compells us to work for food anyway, that's not exploitation and coercion, that's just survival.
The construct of society is predicated on the idea of "from each... to each..." That saying often gets conflated with left-wing politics, but that's just the point of animals (humans included) grouping together; after all, what's the point of living in society if it doesn't convey any benefits to the individual that they could not provide for themselves? That would be exploitative of the individual. But if they are benefitting, then it is only fair and just to also give back to the society one extracts benefits from, otherwise it is exploitative of the others.
Put another way: no one should be obligated to participate in society, but then society should likewise have no obligations to the non-participants.