"he gives 110 percent of what other people give"

Likewise overachiever, overachieving is to be expected for many with these dictionary definitions of the words.

o·ver·a·chieve (vr--chv)
intr.v. o·ver·a·chieved, o·ver·a·chiev·ing, o·ver·a·chieves
To perform better or achieve more success than expected.
over·a·chievement n.
over·a·chiever n.

Noun        1.        overachiever - a student who attains higher standards than the IQ indicated