有劳

(polite) thank you for your trouble (used when asking a favor or after having received one)

to have; there is / (bound form) having; with; -ful; -ed; -al (as in 有意[you3 yi4] intentional)

to toil / labor / laborer / to put sb to trouble (of doing sth) / meritorious deed / to console (Taiwan pr. [lao4] for this sense)

a good dog deserves a bone (idiom)