Isaac is a picker and packer in a large warehouse. His compensation is determined by a schedule of pay grades and he is paid by an hourly rate. This makes it easier when Isaac works overtime or weekends, his hours are calculated through a clocking system and he is paid accordingly. Which pay system is used in Isaac$$s case?

Group of answer choices

Employee$/$person$-$based system

Performance$-$based system

Time$-$based system

Incentive$-$based system