Ok , i can see that thats the way it currently works to keep people from moving to a competitor for some
.But the question i am asking isnt really that. The question is whether or not a bonus as an incentive at the end of the year is a way to maximize the staffs performance. :
Do they perform better due to having a personal bonus as a goal at the end of the year?
Yes. It is how sales people have functioned since ever. They make 2 to 5 times their salary through commissions, which are basically bonuses.
The fixed year end bonus for other workers is also a great motivator because people use it for vacations and so on. They plan their lives around the bonus.