Fluctuating workweek calculator

Calculate overtime for a salaried non-exempt employee paid under the fluctuating workweek method.

Fluctuating workweek…Fixed weekly salary ($): 900Hours worked this week: 50📈
In shortRegular rate = weekly salary ÷ hours worked that week. Overtime premium = 0.5 × regular rate × hours over 40. A $900 salary for 50 hours gives an $18 regular rate and $90 overtime.

Your fluctuating workweek inputs

Enter your numbers and press Calculate.

The math behind the fluctuating workweek

Regular rate = weekly salary ÷ hours worked.

Overtime premium = 0.5 × regular rate × hours over 40.

Total = salary + premium.

Example with real numbers

A field supervisor on a $900 weekly salary under the fluctuating workweek method works 50 hours. The regular rate is $18.00, overtime premium is $90 for 10 hours, and pay for the week is $990. In a 45-hour week the rate is $20.00 and the premium $50.

When this calculation helps

The fluctuating workweek method lets employers pay a fixed salary for hours that vary, plus half-time for overtime. It has conditions: a clear understanding, hours that truly fluctuate, and a salary that never falls below minimum wage for all hours.

Several states do not allow this method. Check before using it.

A second example

A property maintenance supervisor is paid a fixed $1,100 a week under the fluctuating workweek method. In a 38-hour week there is no overtime and pay is the $1,100 salary, which works out to $28.95 an hour. In a 58-hour week the regular rate falls to $18.97, and the premium for 18 overtime hours is $170.69, so pay for that week is $1,270.69.

Reading the result

The regular rate is the salary divided by all hours worked, so the more hours worked, the lower the rate and the smaller the premium per overtime hour. Total pay is only correct if every condition of the method is met, including hours that truly vary, a clear understanding and a salary that always meets minimum wage. If an includable bonus was paid, add it to the salary first, or the rate and premium will come out too low.

Where a fluctuating workweek goes wrong

The fluctuating workweek by team type

Field and site supervisorsUse it when project work swings hours widely from one week to the next.
Small officesCompare with plain hourly pay; if hours are steady, hourly is often easier to run and explain.
Pro tipBefore you start, show the employee pay for a 42-hour week and a 55-hour week side by side. Seeing how the rate drops in long weeks avoids later surprises.

What people ask about the fluctuating workweek calculator

Is it legal everywhere?

No; some states prohibit it.

Why does the rate change each week?

The same salary is divided by different hours.

What if hours are below 40?

The full salary is still paid.

Can it go below minimum wage?

No, the regular rate must meet minimum wage.

Can I pay bonuses under the fluctuating workweek method?

Federal rules allow bonuses and premium pay on top of the fixed salary. They must be included in that week’s regular rate, so add them to the salary figure before calculating.

Does the salary have to stay the same every week?

Yes. A fixed salary that does not change with hours worked is a core condition of the method. If the salary is cut in slow weeks, the method does not apply and overtime would be owed at the normal 1.5 times rate.

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Skip the manual totals

Instead of adding up timesheets before you open the fluctuating workweek calculator, let EZTime total employee hours. Book a demo to see it with your team.

General information and an estimate only. It is not legal or payroll advice. The fluctuating workweek method has conditions and is not allowed in some states. Check with a qualified professional.