[babul]

But in many fields e.g. finance/banking/consulting, its all about the bonus, which can be several times your salary.

(and yes, this in many ways is the root cause of the current world financial problem, but just saying)

[generalk]

Of course it depends on the field, and for top C-level executives the bonus is pretty much the biggest chunk of compensation. My particular bonus rests on my performance, and is based on profit besides, which is the most common form of bonus I've seen in the trenches of software development.