A biweekly payroll schedule allows employees to receive compensation every two weeks. Human resources departments often need to calculate the total number of biweekly payroll hours in a pay period. Normally, companies have a lag time between the dates payroll hours accrue and the date the payroll hours actually get paid.

Determine the payroll period for the payroll date. For example, If a payday falls on the 20th of the month, the payroll period could actually cover work hours between the first and the 13th of the month.

Determine all hours worked for hourly employees during the payroll period. Use the actual hours worked for each hourly employee, since an hourly employee may work a parttime schedule. For example, assume that hourly employees worked a total of 5,000 hours during the payroll period.

Determine all hours worked for salaried employees during the payroll period. You would calculate 80 hours worked for each salaried employee. Multiply 80 times the number of salaried employees. For example, assume the company has 20 salaried employees, then 80 x 20 = 1,600.

Add the hourly and salaried hours. Continuing the same example, 5,000 + 1,600 = 6,600. This figure represents the biweekly payroll hours for the company.