"We want the zero hour work week!"
Vs
"nobody needs to work"
"We want the zero hour work week!" implies a desire to reduce the standard work week to zero hours. It suggests people still want to work and contribute value through their work, just with fewer required work hours.
"Nobody needs to work" is a broader statement that questions whether work itself is necessary. It could be interpreted as meaning that people should not be obligated or required to work at all, and that their basic needs should still be met without contributing labor.
Overall, the first sentence focuses more on reducing work hours while still valuing work itself. The second calls into question whether work is inherently needed for people to live and thrive. Both discuss reducing the role of work, but they have slightly different philosophical implications.