Is Overtime Calculated Daily or Weekly?

Overtime is most commonly calculated on a weekly basis under federal law, but some states require daily overtime. The federal Fair Labor Standards Act (FLSA) mandates overtime pay for hours worked over 40 in a single workweek, while certain states like California also require overtime for hours over 8 in a day.

Formula

The basic formula for weekly overtime pay is:

Overtime Pay = (Total Hours Worked – 40) × Regular Hourly Rate × 1.5

Where:

• Total Hours Worked (t) – the number of hours you actually worked in the workweek (unit: hours)
• Regular Hourly Rate (r) – your standard pay rate before overtime (unit: dollars per hour)
• 1.5 – the standard overtime multiplier (time-and-a-half) required by the FLSA

If you work 45 hours at $20/hour, the overtime pay is (45 – 40) × 20 × 1.5 = $150. Total pay is 45 × 20 + (45 – 40) × 20 × 0.5 = $950.

Worked Example

Using the calculator defaults: you worked 45 hours in a week, and your regular rate is $20/hour.

1. First, find the overtime hours: 45 – 40 = 5 hours.
2. Multiply overtime hours by the regular rate: 5 × $20 = $100.
3. Multiply that by 1.5 (the overtime multiplier): $100 × 1.5 = $150.
4. For total pay, add the straight-time pay for all hours (45 × $20 = $900) plus the overtime premium ($150) to get $1,050.

The calculator shows $150 for overtime pay and $1,050 for total pay, matching the manual calculation.

How the Fair Labor Standards Act Defines Overtime

The FLSA, the main federal wage law in the United States, requires that non-exempt employees receive overtime pay at a rate of at least 1.5 times their regular rate for all hours worked over 40 in a workweek. A workweek is a fixed, recurring period of 7 consecutive 24-hour periods. It can start on any day and at any time, as long as it is consistent. The key point: the FLSA looks at the total hours in that 7-day period, not at individual days.

For example, if you work 10 hours on Monday, 8 hours Tuesday through Friday, and 2 hours on Saturday, your weekly total is 48 hours. Under federal law, you are entitled to 8 hours of overtime (48 – 40) even though no single day exceeded 8 hours.

When Daily Overtime Applies: State Rules

Some states have their own overtime laws that are more generous than the FLSA. In those states, overtime may be calculated on a daily basis as well as weekly. The most notable example is California, where overtime is required for:

• Hours worked over 8 in a single day (at 1.5 times the regular rate)
• Hours worked over 12 in a single day (at 2 times the regular rate)
• Hours worked over 40 in a week (at 1.5 times the regular rate)

Other states with daily overtime provisions include Alaska (over 8 hours in a day), Nevada (over 8 hours for certain employees), and Colorado (over 12 hours in a day, under specific conditions). If you work in a state with daily overtime, you may be entitled to overtime even if you work fewer than 40 hours in the week. For instance, working 9 hours on Monday and 7 hours on Tuesday (total 16 hours) would trigger 1 hour of daily overtime in California, despite the weekly total being below 40.

Which Method Applies to You?

To determine whether your overtime is calculated daily or weekly, you need to know:

1. Your state of employment – check your state’s labor department website for the specific overtime rules.
2. Your exempt status – the FLSA and most state laws only protect non-exempt employees. Exempt employees (often salaried workers in executive, administrative, or professional roles) are not entitled to overtime.
3. Your employer’s policy – some employers voluntarily offer daily overtime even when not required, but they must follow the law that is most favorable to the employee.

If your state has no daily overtime law, the federal weekly standard applies. If your state has a daily law, you get whichever calculation gives you more pay.

Common Mistakes and Misconceptions

One frequent mistake is assuming that overtime is calculated per pay period (e.g., every two weeks). That is incorrect – the FLSA uses a single workweek. If you work 50 hours one week and 30 the next, you are owed 10 hours of overtime for the first week, even though your two-week total is 80 hours. Conversely, if you work 45 hours in two consecutive weeks, you are owed 5 hours of overtime each week, not 10 hours in the second week.

Another misconception is that working on weekends or holidays automatically earns overtime. Unless your state or employer has a specific rule, weekend and holiday work is only paid at the regular rate unless it pushes your weekly total over 40 (or daily total over 8 in daily-overtime states).

Also, the regular rate is not always your hourly wage. If you receive bonuses, commissions, or other non-discretionary payments, those must be included in calculating your regular rate for overtime purposes. For example, if you earn a $100 production bonus in a week where you worked 45 hours at $20/hour, your regular rate becomes (45×20 + 100) ÷ 45 = $22.22, and your overtime rate is $33.33 per hour.

How to Track and Calculate Your Overtime

To accurately calculate your overtime, you should:

• Record your start and end times for each shift, including unpaid breaks (if any).
• Add up total hours for each day, then for the week.
• Check your state’s daily overtime threshold (if any).
• Apply the appropriate overtime rate for each category (daily vs. weekly).
• Include all non-discretionary bonuses in your regular rate calculation.

Many payroll systems automatically handle this, but it’s wise to verify your pay stub. If you believe your employer is not paying overtime correctly, you can file a complaint with the U.S. Department of Labor’s Wage and Hour Division or your state labor agency.

Limits of the Formula

The simple formula above assumes a single regular rate and straightforward hours. It does not account for:

• Multiple pay rates (e.g., different rates for different jobs)
• Bonuses or commissions that alter the regular rate
• State-specific daily overtime rules
• Exempt vs. non-exempt status

For those situations, you need a more detailed calculation. The calculator provided here is a basic tool for the most common scenario: a non-exempt employee with a fixed hourly rate and no additional pay components.

Frequently Asked Questions

Is overtime calculated per day or per week in the U.S.?

Under federal law, overtime is based on a 7-day workweek: any hours over 40 in that week are overtime. However, some states like California also require overtime for hours over 8 in a single day. You are entitled to whichever method gives you more pay.

What if I work 10 hours on Monday and 30 hours the rest of the week?

Your weekly total is 40 hours, so under federal law you would not earn overtime. But in a state with daily overtime, you would earn 2 hours of overtime for Monday (10 – 8 = 2) at 1.5 times your rate, even though the weekly total is exactly 40.

Does working on a Saturday or Sunday count as overtime?

Not automatically. Only if your total weekly hours exceed 40 (or your daily hours exceed the state threshold) does overtime kick in. Weekend work is just regular hours unless it pushes you over the limit.

Can my employer average my hours over two weeks to avoid paying overtime?

No. The FLSA requires overtime to be calculated on a single workweek basis. Averaging hours over multiple weeks is not allowed for non-exempt employees. If you work 50 hours one week and 30 the next, you must be paid 10 hours of overtime for the first week.

How do bonuses affect overtime calculation?

Non-discretionary bonuses (like production or attendance bonuses) must be included in your regular rate. Your overtime rate is then 1.5 times that higher rate. Discretionary bonuses (like a surprise holiday gift) are excluded.

What is the difference between overtime and double time?

Overtime is typically 1.5 times your regular rate. Double time is 2 times your regular rate, and it is required in some states (e.g., California for hours over 12 in a day) or by union contracts. The FLSA itself does not require double time.

Related

• Calculate Time Since a Date: Elapsed Time Calculator
• Time Value of Money: Formula and Calculation
• Calculate Time Lapse Duration: Formula and Examples

in t | Total hours worked | hours | 45 | 0
in r | Regular hourly rate | $ | 20 | 0
out ot | Overtime pay (weekly) | $ | (t - 40) * r * 1.5 | 2
out total | Total pay (weekly) | $ | t * r + (t - 40) * r * 0.5 | 2