The author doesn't ask so much for a job, as reflects about something more profound: meaningful, purposeful relationships with others which enables them to manifest their morals, values, identity,...

Interesting work isn't interesting for the sake of spending 8+ hours a day "doing" something. It only becomes interesting when it has an impact on the world which one feels is meaningful.

For sure, a novelist could write books for no other reason then deriving enjoyment of the sheer act of committing words to paper or a screen. But the vast majority of people feel that the things they do in life truly become meaningful when they are seen, used, enjoyed,... by others.

One could argue that one could do so by volunteering, taking initiative, or starting one's own business. However, the vast majorities of opportunities to enter meaningful professional relationships still involve signing a dotted line and a salary.