Productivity measure & KRA

During our professional career many times one would be challenged with productivity questions. If you are a manager or a supervisor you are responsible for your team's productivity as well. People are not born equal and hence this measure can not be the same for all resources working in a team. However you can't differentiate them openly when you set your KRA's. The way you can solve this problem is by keeping productivity targets at the team level rather than keeping them at individual level. If the team wins the organization wins !!