How can you force a person to work if they will work willingly?

That makes no sense at all.

It is never moral to steal.
It is never moral for one man to determine whether another man should or shouldn't have what he worked for. It leads to corruption and tyranny.

__________________
Poor Spot! He was tired of being thought of as stupid. "I'm gonna join Mensa," he said to myself, "and then I'll be legally permitted to wear the society's insignia--a tattoo of a little map pin pushed into my flesh--and then everyone'll know that I'm not dumb at all!"
Spot Joins Mensa
by James "Kibo" Parry