Often it is the ‘unseen' aspects of employees, as well as the intangible outcomes of people working together, that cause leaders the most problems in optimizing a workforce.
I believe in systems theory and in the management process to make and/or deliver a product or service. And, as part of those systems and processes, employees will either make the processes work well or they will cause problems. Great leaders realize that employees are the most important part in any system.
Good employees will do great things if their leaders just give them the tools needed, the training required, and enough structure to measure outcomes!