go above and beyond (one's) duty
To do more than what is expected of one. Wow, I can't believe you finished our whole report while I was out sick. You really went above and beyond your duty on this one!
go above and beyond one's duty
and go above and beyond the call of dutyFig. to exceed what is required of one. Doing what you ask goes above and beyond my duty. My job requires me to go above and beyond the call of duty almost every day.