How to Calculate Overtime Pay Under the FLSA

Quick takeaways

• Under the Fair Labor Standards Act (FLSA), most non-exempt employees must receive at least 1.5× their regular rate for hours worked over 40 in a workweek. (29 U.S.C. § 207(a)(1))
• The “regular rate” is not necessarily the hourly wage on the paycheck—it’s usually derived from total compensation for the week, including certain bonuses, shift differentials, and other earnings (subject to inclusion/exclusion rules). (29 C.F.R. § 778.109)
• For overtime math, you’ll typically need three numbers:
  (1) workweek hours, (2) regular rate, and (3) overtime hours. Then use:

  • Overtime pay (total entitlement) = overtime hours × 1.5 × regular rate
• Timekeeping matters. If your time records are wrong, the overtime calculation will be wrong—no matter how correct your math is.
• DocketMath helps you structure inputs (hours and the regular-rate components) so you can produce a clear, reproducible figure and a reasonable audit trail.

Inputs you need

To calculate overtime pay under the FLSA, collect inputs that drive two parts of the formula: (a) overtime hours and (b) the regular rate.

1) Workweek definition and hours worked

The FLSA overtime trigger is based on a workweek—a fixed, recurring period of 7 consecutive days the employer establishes.

Gather:

• Workweek start date (or at least the 7-day window you’re calculating)
• Total hours worked in the workweek

  • Include hours actually worked
  • Exclude time that is not compensable (this guide focuses on the overtime math; record-keeping quality still matters)

2) Non-exempt status (eligibility for FLSA overtime)

This calculation applies when the employee is non-exempt from FLSA overtime. If the employee is exempt, the FLSA overtime requirement generally doesn’t apply.

Gather:

• Enough information to support the employee’s non-exempt classification (e.g., documented role classification and duties analysis, or an internal payroll policy)

3) Regular rate information

The regular rate is the employee’s rate for the normal workweek conceptually reflecting all remuneration for employment, subject to specific statutory/regulatory rules about what must be included or excluded.

Depending on how the employee is paid, you may need:

• Base pay for the workweek
• Other included weekly earnings, such as:

  • Non-discretionary bonuses or incentive pay
  • Certain shift differentials
  • Piece-rate conversions (when applicable)
• Total compensation intended to be included in the regular rate, for the same workweek

Quick regular-rate checklist (per workweek)

• Base pay for the week
• Plus/minus other earnings that are included in the regular rate
• Divide by the correct regular-rate denominator (commonly hours actually worked, depending on the pay plan and facts)

How the calculation works

Step 1: Identify overtime hours (hours over 40)

Overtime hours are the portion of the workweek above 40.

• Overtime hours = max(0, total hours in the workweek − 40)

Example:

• Total hours in the workweek: 45
• Overtime hours = 45 − 40 = 5

Step 2: Determine the regular rate for the workweek

There are multiple pay structures, and the “regular rate” may not equal the hourly wage shown on a timesheet or paycheck. The goal is to derive a single regular rate for the workweek based on the remuneration that must be included.

Here are three common ways to think about it:

Scenario A: Pure hourly wage (simplest case)

If pay is strictly hourly and there are no additional regular-rate components to include:

• Regular rate = hourly rate

Example:

• Hourly rate: $20.00
• Regular rate = $20.00

Scenario B: Hourly base plus a non-discretionary bonus

A common approach:

1. Compute base pay for the week
2. Add the portion of non-discretionary bonus that must be included
3. Divide the total by the hours used in the regular-rate denominator

Illustration:

• Hourly rate: $18.00
• Hours worked: 44
• Base pay: 44 × $18.00 = $792.00
• Non-discretionary bonus included: $88.00
• Total remuneration included: $792.00 + $88.00 = $880.00
• Regular rate: $880.00 ÷ 44 = $20.00

Scenario C: Weekly salary converted to an hourly regular rate

For weekly salary arrangements, overtime calculations often require deriving an hourly regular rate by dividing the weekly salary (and included additions) by the number of hours the salary is intended to cover (which can depend on the pay plan and facts). The structure remains:

• Regular rate = (weekly salary + included pay components) ÷ hours

Step 3: Apply the FLSA overtime multiplier (time-and-a-half)

FLSA overtime is time-and-a-half:

• Overtime pay (total entitlement) = overtime hours × (regular rate × 1.5)
  (29 U.S.C. § 207(a)(1))

Example 1 (hourly only):

• Hours: 45
• Overtime hours: 5
• Regular rate: $20.00
• Overtime pay: 5 × ($20.00 × 1.5) = 5 × $30.00 = $150.00

Example 2 (hourly + non-discretionary bonus):

• Hours: 44
• Overtime hours: 4
• Regular rate: $20.00
• Overtime pay: 4 × ($20.00 × 1.5) = 4 × $30.00 = $120.00

Step 4: Reconcile with what the employee already received (“additional owed”)

Many people want the additional overtime premium (what’s owed on top of straight-time), not just the total entitlement.

A common reconciliation method:

1. Compute total overtime entitlement at 1.5×
2. Account for straight-time that may already be included in regular wages

If you’re calculating the additional overtime premium (the “0.5×” piece):

• Additional overtime premium = overtime hours × (regular rate × 0.5)

This aligns with the algebra:

• Total at 1.5× = straight-time (1.0×) + premium (0.5×)

Step 5: Document assumptions and formulas for defensibility

If calculations are reviewed later (internally, during audit, or in a dispute), assumptions and inputs matter as much as the multiplication.

Document:

• The workweek used (7 consecutive days)
• Total hours and computed overtime hours
• The regular-rate formula, including which pay components were included/excluded
• Outputs:

  • Total overtime entitlement
  • Additional overtime premium (if you’re reconciling what was already paid)

If you want to run this workflow with DocketMath, start at /tools and enter the hours plus the regular-rate components you identified.

Common pitfalls

The multiplier math (the 1.5× part) is usually straightforward. Errors often come from workweek scope and especially Step 2 (regular rate).

Pitfall checklist (frequent calculation errors)

• Using hours per day totals instead of hours per workweek (overtime is weekly)
• Treating “overtime hours” as all hours over 8 per day (that’s not the FLSA rule)
• Using the hourly rate as the regular rate when additional payments must be included in the regular rate
• Ignoring a non-discretionary bonus/incentive component that should be included
• Guessing the regular rate rather than deriving it from total included weekly remuneration
• Double-counting pay components (e.g., including a bonus both in base and again as a separate item)
• Mixing pay periods (e.g., computing the regular rate for one week while overtime hours come from another)
• Missing hours due to incomplete/incorrect time records (timekeeping quality directly impacts overtime entitlement)

Tip: When something looks off, validate the regular-rate inputs first—that’s where most drift happens.

Bonus-specific pitfall: discretionary vs. non-discretionary

A bonus that is non-discretionary generally feeds into the regular rate calculation more often than a discretionary bonus. Misclassifying this can change the regular rate and therefore the overtime amount.

Sources and references

• 29 U.S.C. § 207(a)(1) — FLSA overtime requirement (time-and-a-half for hours over 40 in a workweek for covered, non-exempt employees).
• 29 C.F.R. § 778.105 — Workweek definition (7 consecutive days; employer-defined recurring period).
• 29 C.F.R. § 778.109 — Regular rate concept (remuneration included; general framework).
• 29 C.F.R. Part 778 — Regulations explaining how regular rate and overtime calculations operate.

Next steps

1. Pick the workweek (7 consecutive days) and accurately total hours worked.
2. Confirm non-exempt status for overtime eligibility (per your organization’s classification process).