Employees join companies but leave managers. A Gallup poll of more 1 million employed U.S. workers concluded that the No. 1 reason people quit their jobs is a bad boss or immediate supervisor.
75% of workers who voluntarily left their jobs did so because of their bosses and not the position itself. In spite of how good a job may be, people will quit if the reporting relationship is not healthy.
"People leave managers not companies... in the end, turnover is mostly a manager issue."