Depends on the industry. For grunt work it's pretty easy. If you're manufacturing widgets, count how many widgets you make per employee hour while staying below

Depends on the industry. For grunt work it's pretty easy. If you're manufacturing widgets, count how many widgets you make per employee hour while staying below a certain defect rate. For professional jobs where the task is never the same and your contribution is applying your intelligence to defining, understanding, and solving new problems in the best way, it's not easy because developing a test of productivity can be nearly as hard as doing the work, maybe even harder.