"Child labor" is, generally speaking, work for children that harms them or exploits them in some way (physically, mentally, morally, or by blocking access to education).
The kindest people use child labor
( z1 use :ARG0 ( z2 person :ARG1-of ( z3 have-degree :ARG2 ( z4 kind :ARG0 z2 ) :ARG3 ( z5 most ) ) ) :ARG1 ( z6 labor :ARG0 ( z7 child ) ) )