Is Overtime Calculated Weekly or Biweekly?

This overtime calculator estimates overtime pay from your hours, regular hourly rate, and overtime multiplier. Enter the hours worked in each workweek, along with your rate and multiplier, to see overtime hours and estimated gross pay; the legal calculation is generally weekly, even when payroll is biweekly.

Formula

For this example calculator, each workweek is calculated separately. Estimated gross pay = [min(hours in week 1, 40) × regular hourly rate + max(0, hours in week 1 − 40) × regular hourly rate × overtime multiplier] + the same calculation for week 2. Overtime hours = max(0, week 1 hours − 40) + max(0, week 2 hours − 40).

• h1 and h2 are hours worked in each separate workweek, in hours.
• r is the regular hourly rate, in dollars per hour.
• m is the overtime multiplier; 1.5 represents time-and-a-half.
• 40 is the standard weekly threshold used in the general U.S. federal rule for covered, nonexempt employees. Actual eligibility and applicable rules can vary.

The calculator treats all hours above 40 in each week as overtime and assumes a fixed hourly rate and multiplier. It does not determine legal coverage, include bonuses or other pay in the regular rate, or account for state, local, or special industry rules.

Worked Example

Using the defaults—45 hours in week 1, 38 in week 2, a $20 hourly rate, and a 1.5 multiplier:

1. Week 1 regular hours: min(45, 40) = 40. Week 1 overtime hours: max(0, 45 − 40) = 5.
2. Week 1 pay: 40 × $20 + 5 × $20 × 1.5 = $800 + $150 = $950.
3. Week 2 regular hours: min(38, 40) = 38. Week 2 overtime hours: max(0, 38 − 40) = 0.
4. Week 2 pay: 38 × $20 = $760.
5. Total estimated gross pay: $950 + $760 = $1,710.00. Total overtime: 5 + 0 = 5 hours.

Why Overtime Is Usually Weekly

For most nonexempt employees covered by the U.S. Fair Labor Standards Act (FLSA), overtime is determined by the workweek, not by the pay period. The general federal rule requires overtime pay at no less than one and one-half times the employee’s regular rate for hours worked over 40 in a workweek. A workweek is a fixed, recurring period of 168 hours—seven consecutive 24-hour periods. It can begin on any day and at any hour, but the employer must use a defined workweek consistently.

A biweekly pay period contains two workweeks. The employer totals and calculates each week independently, then combines the amounts on the paycheck. The check’s frequency does not turn the weekly threshold into 80 hours across two weeks.

Weekly Versus Biweekly: A Practical Comparison

Consider someone who works 45 hours in the first week and 35 in the second. The total is 80 hours over the two-week pay period, but five hours exceed 40 in week one. Those five hours are generally overtime under the standard federal rule; the second week’s unused hours do not cancel them.

The reverse matters too. Someone who works 40 hours in one week and 40 in the next has 80 hours in the pay period but no weekly overtime under that basic calculation. A payroll system may display one biweekly total, but the underlying calculation should preserve the hours and overtime for each workweek.

What Counts as Hours Worked?

Overtime is generally based on hours worked, rather than simply the number of hours an employee was scheduled or paid for. Whether particular time counts can depend on the circumstances and applicable law. Work an employer requires or knowingly permits may count even if it was not scheduled, so employees should record all time worked and raise discrepancies promptly.

Paid leave, such as vacation or sick time, generally is not itself time worked for the federal overtime threshold. However, employer policies, contracts, or state law may provide more favorable treatment. Do not assume that a paid holiday or leave day automatically counts as hours worked when calculating federal weekly overtime.

Pay Rates, Exceptions, and Limits

For hourly workers, time-and-a-half is often explained as 1.5 times the regular hourly rate, but the legal regular rate can be more involved than the base wage. Certain bonuses and other compensation may need to be included in the regular-rate calculation. The calculator’s estimate does not account for those additions or other pay arrangements.

Not every employee is legally entitled to overtime under the same rule. Coverage, exemptions, job duties, pay arrangements, and special rules can affect eligibility; a job title alone does not settle whether an exemption applies. State and local laws may set different thresholds or provide stronger protections. When rules overlap, the applicable requirements may depend on the location and circumstances. Check the U.S. Department of Labor or the relevant state labor agency for current guidance, or seek qualified advice about an individual dispute.

Common Payroll Mistakes to Check

• Adding two weeks together first: Check each defined workweek separately instead of comparing only the pay-period total with 80 hours.
• Using a calendar week by assumption: The employer’s established workweek may start on a different day or time.
• Leaving out work time: Keep a record of all hours actually worked, including work outside a posted schedule.
• Assuming every paid hour is an hour worked: Paid leave and other paid nonwork time may be treated differently from time on the job.
• Assuming every extra hour is automatically paid at exactly 1.5 times base wage: Eligibility, regular-rate calculations, and local requirements can change the result.

Frequently Asked Questions

Is overtime based on 80 hours in a biweekly pay period?
No, not under the standard federal rule for covered, nonexempt employees. The 40-hour threshold is tested separately in each workweek, even if the paycheck covers two weeks.

Can 45 hours one week and 35 the next cancel out?
No. Under the general weekly method, the five hours over 40 in the first week remain overtime; the second week’s 35 hours do not erase them.

Does overtime start after eight hours in a day?
Not under the general federal rule, which uses a weekly threshold. Some state laws or specific work arrangements may also impose daily overtime rules, so location matters.

Does vacation or holiday pay count toward the 40-hour threshold?
Paid leave is generally not time worked for the federal threshold. A state law or employer policy may provide a different, more favorable benefit.

What if my paycheck shows no overtime after I worked more than 40 hours?
Compare your time records with the employer’s defined workweek and pay statement, and check whether all work time was recorded. If the calculation still seems wrong, contact payroll or the relevant labor agency.

Related

• Days Between Dates Calculator and How It Works
• Years Calculator from Date of Birth
• Years Calculator From Date: How It Works

in h1 | Hours in workweek 1 | hours | 45 | 0
in h2 | Hours in workweek 2 | hours | 38 | 0
in r | Regular hourly rate | $/hour | 20 | 0
in m | Overtime multiplier | x | 1.5 | 0
out pay | Estimated gross pay | $ | min(h1,40)*r+max(0,h1-40)*r*m+min(h2,40)*r+max(0,h2-40)*r*m | 2
out oh | Overtime hours | hours | max(0,h1-40)+max(0,h2-40) | 2