Fluctuating Workweek Overtime Calculator
Enter a fixed weekly salary and hours worked to get the FLSA fluctuating workweek regular rate, the half-time overtime premium, and total weekly gross.
Fluctuating Workweek Overtime Calculator
Salary and hours
The salary that does not change with hours worked. Enter the weekly amount: if you are paid biweekly, divide by 2, and if semimonthly, multiply by 24 and divide by 52. The pay period converter does the conversion for you.
Total hours actually worked in this one workweek. The FLSA workweek is a fixed, recurring 168-hour period, and overtime is never averaged across two weeks or a pay period.
Additional pay this week (optional)
Since the DOL 2020 final rule, nondiscretionary bonuses, commissions, and premium pay are compatible with the fluctuating workweek method, and they must be added to the salary before dividing. Truly discretionary bonuses, decided after the fact with no advance promise, are excluded.
State (compliance check only)
Optional. The state you pick never changes a computed number here. It only checks whether you are in one of the seven that prohibit or restrict the method under state wage law.
Comparison only. This is what the same week would pay if the salary were treated as covering 40 hours and every hour past 40 were paid at time-and-a-half. It is not a second legal answer. It is the number you owe instead when the fluctuating workweek conditions are not met, or when your state does not allow the method. Additional pay is added flat to gross under both methods.
Regular rate as hours climb
Your salary and additional pay held constant, spread across different hours worked. Every extra hour drags the regular rate down, which is why the half-time premium stays modest.
How the fluctuating workweek regular rate is calculated
The fluctuating workweek method pays a non-exempt employee a fixed weekly salary that covers every hour worked, however many that turns out to be. Because the salary already pays straight time for all of those hours, including the hours past 40, only the incremental half of the overtime rate is still owed. That is the whole reason for the 0.5 factor.
The arithmetic is three steps. Take an $800 salary and a 48-hour week:
- Regular rate: $800 divided by 48 hours worked = $16.6667 an hour
- Overtime premium: 0.5 x $16.6667 x 8 hours over 40 = $66.67
- Total weekly gross: $800 + $66.67 = $866.67, an effective $18.06 an hour
Notice the divisor. You divide by the hours actually worked, not by 40 and not by scheduled hours (29 CFR 778.114(b)). That divisor is the whole method, and it means the regular rate falls every time hours climb:
| Hours worked | Regular rate | Half-time premium | Total gross |
|---|---|---|---|
| 40 | $20.0000 | $0.00 | $800.00 |
| 45 | $17.7778 | $44.44 | $844.44 |
| 50 | $16.0000 | $80.00 | $880.00 |
| 55 | $14.5455 | $109.09 | $909.09 |
| 60 | $13.3333 | $133.33 | $933.33 |
The more hours worked, the less each hour is worth, which is why the total premium stays modest even in a 60-hour week. You can verify the tool against the regulation itself: 29 CFR 778.114(c) Example 1 uses a $600 fixed weekly salary and prints $16.00 at 37.5 hours, $13.64 at 44 hours, $12.50 at 48 hours, and $12.00 at 50 hours. Example 3 adds a $100 weekly productivity bonus to the same salary and prints $18.67 at 37.5 hours and $14.58 at 48 hours, which confirms that non-excludable additional pay belongs in the numerator, before the divide.
Fluctuating workweek vs. standard time-and-a-half
The gap between the two methods is the number most people come here for. Under the standard method the salary is treated as compensation for 40 hours, so the hourly rate is the salary divided by 40 and every hour past 40 is paid at 1.5 times that rate. Same $800 salary, same 48-hour week:
| Step | Fluctuating workweek | Standard time-and-a-half |
|---|---|---|
| Hourly rate | $800 / 48 = $16.6667 | $800 / 40 = $20.0000 |
| Overtime multiplier | 0.5x | 1.5x |
| Overtime pay on 8 hours | $66.67 | $240.00 |
| Total weekly gross | $866.67 | $1,040.00 |
That is a $173.33 gap on a single week, roughly $9,000 across a year of similar weeks. One convention keeps the comparison honest. Bonuses, commissions, and shift premiums are added flat to gross in both columns instead of being folded back into the standard hourly rate, so the only thing separating the two totals is the overtime treatment.
This is not a choice an employer makes week by week. Which number you owe is determined by whether the 29 CFR 778.114(a) conditions were genuinely satisfied and by whether your state allows the method at all. If they were not, the standard figure from the overtime pay calculator is the one that applies.
The five conditions, and where employers get it wrong
29 CFR 778.114(a) sets five conditions, all of which have to hold:
- The employee's hours genuinely fluctuate from week to week.
- The employee receives a fixed salary that does not vary with the hours worked.
- The salary is enough to pay at least the applicable minimum wage for every hour worked in the weeks with the most hours (29 U.S.C. 206(a)(1)).
- The employer and employee have a clear and mutual understanding that the salary covers all hours worked, whatever the number.
- The employee receives at least half-time extra pay for every hour past 40.
Four failure modes account for most of the litigation:
- Docking the salary for short weeks. The moment pay drops because hours dropped, the fixed-salary condition is broken.
- No written clear-and-mutual-understanding. It is the first document a plaintiff's lawyer asks for, and an unwritten arrangement is hard to defend.
- Leaving nondiscretionary bonuses out of the regular rate. Commissions, production bonuses, and shift premiums raise the regular rate and therefore the premium. The shift differential calculator covers that premium pay in detail.
- Applying the method to hours that do not actually fluctuate. A schedule that is 50 hours every single week is fixed, not fluctuating.
The remedy risk is what makes these mistakes expensive. When the method is invalidated, back overtime is typically recalculated at time-and-a-half, the multiple shown in the comparison above, and often across a multi-year lookback. The retro pay calculator works out what that correction comes to. Anything about withholding on the corrected gross belongs in the salary to paycheck calculator, since every figure on this page is gross pay.
States that do not allow the fluctuating workweek
Seven states prohibit or restrict the method under state wage law, because their law does not let a non-exempt employee's salary compensate more than 40 hours in a week. In these states overtime is owed at time-and-a-half:
| State | Authority |
|---|---|
| Alaska | Dresser Industries, Inc. v. Alaska Dep't of Labor, 633 P.2d 998 (Alaska 1981) |
| California | Skyline Homes, Inc. v. Dep't of Industrial Relations, 211 Cal. Rptr. 792 (Cal. Ct. App. 1985) |
| Connecticut | Williams v. General Nutrition Centers, Inc., 166 A.3d 625 (Conn. 2017) |
| Montana | Glick v. State of Montana, 509 P.2d 1 (Mont. 1973) |
| New Jersey | N.J. Dep't of Labor v. Pepsi Cola Co., 2000 WL 34401845 (N.J. Admin. 2000), aff'd 2002 N.J. Super. Unpub. LEXIS 2 |
| New Mexico | N.M. Dep't of Labor v. EchoStar Communications Corp., 134 P.3d 780 (N.M. Ct. App. 2006) |
| Pennsylvania | Chevalier v. General Nutrition Centers, Inc., affirmed by the Pennsylvania Supreme Court in November 2019 |
"Prohibit or restrict" is more accurate than "ban." New Jersey's authority is administrative and appellate rather than a high-court holding. Pennsylvania sits at the other end of the range: the state Supreme Court held in November 2019 that the method is unlawful under the Pennsylvania Minimum Wage Act. Federal law permitting the method does not preempt a stricter state rule, so where state law is tighter, state law governs.
California is the largest of the seven and the furthest from the federal rules, since it also runs daily overtime past 8 hours, double time past 12, and a seventh-consecutive-day rule that this page deliberately does not model. Work those weeks in the California overtime calculator instead. State wage law changes: confirm your state's current position before relying on this method. This page is not legal advice.
Once you know which method applies, running it across a whole crew is the next problem. The WorkLogs44 Payroll Calculator app handles full multi-employee payroll with per-worker independent math for all 50 states plus DC, so a mixed roster of salaried and hourly staff comes out in one pass.
Frequently Asked Questions
Common questions about fluctuating workweek overtime calculator
How do you calculate overtime under the fluctuating workweek method?
Divide the fixed weekly salary, plus any nondiscretionary bonuses, commissions, or shift premiums paid for that week, by the total hours actually worked. That gives the regular rate for that week. Then pay an extra 0.5 times that rate for every hour past 40. Because the salary already covers straight time for all hours worked, only the half-time premium is still owed. Example: $800 salary, 48 hours worked. $800 / 48 = $16.6667 an hour, then 8 overtime hours x 0.5 x $16.6667 = $66.67, for total gross of $866.67 (29 CFR 778.114).
Why is the overtime rate half-time instead of time-and-a-half?
It is still time-and-a-half. The straight-time half is just already inside the salary. The FLSA requires 1.5 times the regular rate for overtime hours. Under a fixed salary paid for all hours worked, the 1.0 portion has been paid, so the employer owes the remaining 0.5. With a standard hourly setup none of it has been paid yet, so the full 1.5 is owed. What changes is what the salary was agreed to cover, not the multiplier. To run the standard version, use the overtime pay calculator.
Is the fluctuating workweek method legal?
Under federal law, yes, if all five conditions in 29 CFR 778.114(a) are met: hours genuinely fluctuate week to week, the employee receives a fixed salary that does not vary with hours, the salary is enough to cover at least the applicable minimum wage for every hour in the highest-hours week, there is a clear and mutual understanding that the salary covers all hours worked, and the employee gets at least half-time extra for overtime hours. But Alaska, California, Connecticut, Montana, New Jersey, New Mexico, and Pennsylvania prohibit or restrict it under state law, and state law wins where it is stricter. California also layers on daily overtime, which the California overtime calculator handles.
Can you pay bonuses or commissions under the fluctuating workweek method?
Yes. The DOL final rule announced 20 May 2020 and effective 8 August 2020 confirmed that bonuses, premium payments, and other additional pay are compatible with the method. The catch is that non-excludable additional pay must be added to the salary before you divide by hours worked, so it raises the regular rate and therefore raises the overtime premium. Truly discretionary bonuses, decided after the fact with no advance promise, stay out of the regular rate. For the premium-pay side, see the shift differential calculator.
Do the employee's hours have to drop below 40 for the method to apply?
No. The regulation requires that hours fluctuate, not that they fall below 40. The DOL has reiterated that hours need not fluctuate above and below 40, and the Second Circuit reached the same conclusion in 2020. Hours that swing between 45 and 60 still fluctuate. What the method cannot survive is hours that are effectively fixed.
What happens in a week when the employee works fewer than 40 hours?
The full salary is still paid. That is the trade for the reduced overtime premium, and it is a condition of the method, not a courtesy. Docking the salary for hours not worked undercuts the fixed-salary requirement in 29 CFR 778.114(a)(2) and can invalidate the arrangement, often retroactively, exposing the employer to overtime recalculated at time-and-a-half. The retro pay calculator works out that back pay.
What is the minimum salary needed to use the fluctuating workweek method?
There is no dollar threshold. It works as a rate test instead: the salary must produce at least the applicable minimum wage for every hour worked in the weeks with the most hours. The federal minimum wage is $7.25 an hour, so a $500 weekly salary only clears $7.25 up to about 69 hours ($500 / $7.25 is about 68.97), while a 70-hour week yields $7.14 and fails the condition. Many states and cities set a higher minimum, which raises the bar. Note also that this is a non-exempt pay method, not the exempt salary threshold, which is a separate test.
Is the fluctuating workweek the same as "Chinese overtime"?
Yes. "Chinese overtime" is a dated colloquial nickname for the same half-time method. The regulation calls it the fluctuating workweek method, and that is the term to use in policy documents and pay agreements.