Her success is 'just reward for' her hard work. [=she deserves her success because of her hard work]
She is 'reaping the rewards' of success. [=is getting all the good things that come with success]
The police are offering a 'reward for' information leading to the capture of the fugitive.
(..) Are you certain it is the panda who is a fool? You just destroyed your ancestral home, Shen. A trivial sacrifice... when all of China is my reward. Then will you finally be satisfied? Will the subjugation of the whole world finally make you feel better? It's a start. I might also convert (..)2011 Kung Fu Panda 2