chandsingh

I believe VBO includes all levels of vesting. If I recall, VBO is the sum of each individual's ABO multiplied by the person's vested percentage.

Only fully vested seems to strike a "doesn't make sense" notion in my mind.

Usually the only people who are not vested are young workers with a couple years of service. since ABO doesn't consider future pay increases, ABO and VBO tend to be very close together.