It’s because law schools forget (or worse, don’t care) about teaching law students how to manage people.
The fundamental problem is communication. All managers need to understand the motivations of their ‘subordinates’ – what makes them come to work and why. A mutual understanding, along with frequent and candid one-on-one communication, goes a long way.
It’s not about ‘do this’ or ‘do that’. It’s about working cohesively together to attain mutual goals.
If there are law schools that include fundamentals of management courses, I’d like to hear about it.