Differential pay schedule is based on: choose one answer.
a. fica
b. different levels of performance
c. futa
d. gross pay e. none of these

The correct option is B.
Differential pay schedule is a type of payment plan in which workers are paid different amount per hour for the different types of work done during the pay period. For instance, a worker may participate in a task which is paid $20 per hour and in another difficult task, which is paid $45 per hour. The number of hours for both tasks have to be added up to get salary amount due.