Mate I'm just referring to a salary earner who earns a salary plus incentive pay. The guy in your article is a wage earner (hourly rate). He is paid an hourly rate hence his beef if he is paid under that rate whilst still at work.
I'm not sure what deal the cadets are on but I would imagine it would involve a pinneaple and a bottom!
In NZ a salary is a salary and can't be adjusted for the amount of hours you work.