Secret Sales Guy analyzes that ne'er-do-well on most companies' payroll: the moronic heir apparent:

A few tales involved drunken hijinks that would likely have had superiors suggesting a career change. There was the story of nerve damage caused by a broken bottle at an Anchorage, AK wedding reception. There was even a tale told in hushed tones involving the accidental deaths of some colleagues. No one really knew what drove Johnny back to the cold bosom of the family biz, but whatever the reason, we were stuck with him and he with us. Johnny was named operations director, a title and role created especially for him. This meant it was his responsibility to make sure that everything ran smoothly. As he would explain, "If I'm doing my job right, you won't even notice I'm doing my job."

More here.