give (someone) (his or her) dues
1. To give someone the appropriate payment for services or work that he or she has done. After intense negotiations, the local government will finally be giving rural farmers their dues.
2. To give someone that which he or she deserves, which can be a reward or retribution, depending on the situation. Don't worry about those stool pigeons, we'll be sure to give them their dues. After all her hard work, I really hope the company finally gives Mary her dues.