Generally managers are hired to act us buffer between higher order management and employee. HOM don't want to micro manage employees, but they want responsibility, which lower rank employee (the one who do actual work) tend to carry the least. While most workforce would come defensive, that they work responsibily, but indeed most don't. So they higher this manager who do micro manage employee on HOM behalf. The minute most employee gets a good offers, they will fly like its none of there responsiblity, so HOM higher this buffer manager to manage this minute but important aspect for successful project delivery.
