The Art of Calculating Overtime

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If you are an organization that employs nonexempt or hourly employees, you may be familiar with the overtime regulations mandated by the Fair Labor Standards Act (FLSA). According to the law, nonexempt employees must receive overtime pay for hours worked in excess of 40 in a workweek, and at a rate not less than time and one-half their regular rate of pay. On the surface, calculating overtime appears to be straight forward, even if math isn’t your strong suit. Calculating overtime when you pay your employees on a semi-monthly pay schedule, however, introduces a far more complex calculation than other pay schedules. Let’s break it down.

Semi-Monthly Pay Period

Having a semi-monthly pay period will create two pay days per month and there are several different options when creating a semi-monthly pay period. For the sake of simplicity, we have chosen the pay periods of the 1st15th and the 16th-last day of the month for our examples below. The pay periods are identified in orange and purple.

As opposed to a bi-weekly pay period, a semi-monthly pay schedule means that pay days may land on different days of the week. Likewise, a pay period may span across more than one workweek, which is where the confusing calculation of overtime comes into play. An employer is required to look at the workweek and not the pay period when calculating overtime. This means that you may have to look at the hours worked from days in a previous pay period to calculate a workweek’s hours. Highlighted in yellow outlines below are examples of where two pay periods share a workweek.

Calculating Overtime

Company: ElectroCity
Employee: Jack Black
Rate of Pay: $15.00 / hour
Pay Schedule: Semi-Monthly
Pay Period: February 1st – 15th

Below is an example of how an employer would calculate overtime hours in a semi-monthly pay period.

Workweek 1
Total hours in workweek 46
Total overtime hours 6
Total hours for pay period 10 Regular + 6 OT

In Workweek 1 we can see that Jack Black worked a total 46 hours, 6 of which are overtime. Only 10 regular hours and 6 overtime hours will be paid for the pay period because 30 hours were already paid in the previous pay period.

Workweek 2
Total hours in workweek 42
Total overtime hours 2
Total hours for pay period 40 Regular + 2 OT

Workweek 2 is entirely within the pay period, with no days falling into other pay periods. The entire total of 40 regular and 2 overtime will be paid for the pay period.

Workweek 3
Total hours in workweek 46
Total overtime hours 6
Total hours for pay period 38 Regular

Workweek 3 includes days for the upcoming pay period. The overtime hours for Workweek 3 fall within that pay period and not the current pay period. Therefore, only 38 regular hours will need to be paid – any overtime hours for the workweek will be paid in the next pay period.

Gross Payment Calculation Rate Gross Total
Total Regular Hours 88 $15 $1,320.00
Total Overtime Hours 8 ($15 x 1.5) $180.00
Total Payment $1,500.00
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