As you monitor and measure performance, stay focused on outcomes, says Bruce Tulgan in
It’s Okay to be the Boss (Collins). Look at the work product and keep asking questions: "Did you do what you said you were going to do? Why or why not? How did you do it? How long did each step take? Why? Press for details and ask for explanations. And don't forget to ask around. Ask customers, clients, vendors, co-workers and other managers."