I'll repeat the old saying, “People join a company, but leave their manager.” I (Marty) truly believe that this is true. I have done it myself (left because of a terrible manager) and have seen it happen to others countless times. Some amount of attrition is normal and even healthy. Someone's spouse gets a major career opportunity elsewhere, or after several years with your company someone leaves to found their own startup, or someone decides to retire. However, if the people you really don't want to lose are consistently leaving, this is a real sign of a potential problem in management.
