https://library.gv.com/how-google-sets-goals-okrs-a1f69b0b72c7#.8p6auzuqo
Though the video goes into more detail, here are a few keys to what make OKRs work at Google:
- Objectives are ambitious, and should feel somewhat uncomfortable
- Key Results are measurable; they should be easy to grade with a number (at Google we use a 0–1.0 scale to grade each key result at the end of a quarter)
- OKRs are public; everyone in the company should be able to see what everyone else is working on (and how they did in the past)
- The “sweet spot” for an OKR grade is .6 — .7; if someone consistently gets 1.0, their OKRs aren’t ambitious enough. Low grades shouldn’t be punished; see them as data to help refine the next quarter’s OKRs.