無功不受祿

Don't get a reward if it's not deserved. (idiom)

no; not so / (bound form) not; un-

to receive / to accept / to suffer / subjected to / to bear / to stand / pleasant / (passive marker)

meritorious deed or service / achievement / result / service / accomplishment / work (physics)

not to have / no / none / not / to lack / un- / -less

good fortune / official salary