These are the most time-consuming paychecks to create. Timesheets, approved by the supervisor, are used and taxes are calculated for that unique paycheck. 

These are the time-consuming paychecks to create. The basis for the payment, approved by the supervisor, is used and taxes are calculated for that unique paycheck. 

These checks are the same all year long as long as the pay rate remains constant and there are no commissions or bonuses.