How to Calculate Time and a Half Pay

To work out time-and-a-half pay, multiply the employee's hourly rate by 1.5 to get the overtime rate, then multiply that by the number of overtime hours worked. Add the result to straight-time earnings for the week. That is the complete formula. Federal law requires it for every non-exempt hourly worker who logs more than 40 hours in a workweek, and getting it wrong exposes you to back pay claims, liquidated damages, and civil penalties.

What Time-and-a-Half Actually Means

Time-and-a-half is an overtime rate equal to 1.5 times the employee's regular rate of pay. If someone earns $16 an hour, their time-and-a-half rate is $24. That premium is the legal minimum under federal law. You can always pay more. What you cannot do is pay less.

The word "regular" is where most employers get tripped up. The regular rate is not always the same as the base hourly wage. If a worker receives a non-discretionary bonus, a shift differential, or a production incentive during the week, those amounts factor into the regular rate before you calculate overtime. Ignore them and you will owe a retroactive adjustment.

A few definitions worth nailing down before you run any numbers:

• Workweek, not workday. The 40-hour overtime threshold is a weekly measure. It covers any fixed, recurring period of 168 consecutive hours (seven 24-hour days). Your workweek can begin on any day of the week; it just has to stay consistent. An employee who works four 10-hour days (exactly 40 hours) earns no overtime, even though each shift was long.
• Salaried does not mean exempt. The exemption from overtime pay depends on job duties and salary level, not on whether someone is paid hourly or salaried. Many salaried workers qualify for overtime under the FLSA. If you are unsure, the safe move is to treat the worker as non-exempt.
• No comp-time trades in private business. Private-sector employers cannot legally give paid time off in exchange for unpaid overtime. Government employers may, under specific rules. If you run a restaurant, retail store, or contractor business, you owe the cash premium. Time off in lieu is not a legal substitute.

How to Calculate Time-and-a-Half Pay: Step by Step

Run these five steps for any hourly worker in any week where total hours exceed 40.

Step 1: Confirm the regular rate. For a worker paid a flat hourly wage with no additional compensation, the regular rate equals the hourly rate. If the worker received any non-discretionary bonus, shift differential, or production incentive during the week, divide that amount by total hours worked and add it to the base rate. The resulting blended figure is the regular rate.

Step 2: Calculate the overtime rate. Multiply the regular rate by 1.5. A $15-an-hour worker earns $22.50 per overtime hour. A $20-an-hour worker earns $30. You can use our free overtime calculator to run these numbers instantly for any wage and any number of overtime hours, without a spreadsheet.

Step 3: Count the overtime hours. Subtract 40 from total hours worked during the workweek. Any positive remainder is overtime. Forty-seven hours worked means 7 overtime hours.

Step 4: Multiply the overtime rate by overtime hours. Seven overtime hours at $22.50 is $157.50 in overtime pay.

Step 5: Add to straight-time pay. Forty hours at $15 is $600. Add $157.50. Total weekly gross: $757.50.

The table below shows the full picture for 8 hours of overtime at four common wage levels:

Hourly Rate	OT Rate (x 1.5)	Regular Pay (40 hrs)	OT Pay (8 hrs)	Total Weekly Gross
$12.00	$18.00	$480.00	$144.00	$624.00
$15.00	$22.50	$600.00	$180.00	$780.00
$18.00	$27.00	$720.00	$216.00	$936.00
$20.00	$30.00	$800.00	$240.00	$1,040.00

The pattern is predictable: every overtime hour costs exactly 50% more than the regular rate. Eight hours of overtime for a $20-an-hour worker adds $240 to the weekly payroll, on top of the $800 in straight-time pay. That math matters when you are scheduling around a labor budget.

What Does Federal Overtime Law Actually Require?

Under 29 U.S.C. § 207 (the Fair Labor Standards Act), employers must pay non-exempt employees at least 1.5 times their regular rate for all hours worked beyond 40 in a workweek. The law applies to businesses with at least two employees and $500,000 in annual revenue, or to any business engaged in interstate commerce. That second category catches nearly every employer in the country.

Key requirements from the statute:

• The 40-hour workweek threshold is absolute. You cannot average hours across two weeks to avoid overtime. A worker who clocks 50 hours in week one and 30 hours in week two is owed 10 hours of overtime pay for week one, period.
• The law covers the workweek, not the pay period. Biweekly payroll does not change when overtime is earned. If you pay on the 1st and 15th, you still calculate overtime by the individual workweek, then combine the weeks on the paycheck.
• Exempt employees (executive, administrative, professional, and certain outside sales roles) are excluded, but exemptions require meeting both a salary-level test and a duties test. Calling someone a "manager" is not enough. They must genuinely direct two or more employees and have real authority over hiring decisions.
• Violations carry serious consequences. The Department of Labor can pursue back pay, liquidated damages equal to the back pay amount (effectively doubling what you owe), and civil penalties for willful violations.

If you have hourly workers, assume the FLSA applies. Confirm any exemption with an employment attorney before relying on it.

What Counts Toward the Regular Rate of Pay?

This is the calculation that trips up the most employers. The regular rate is broader than the base wage, and using the wrong number means every overtime calculation for that week is wrong.

Items that must be included in the regular rate:

• Non-discretionary bonuses. If you announced a bonus for meeting a production target, attendance metric, or sales goal, that bonus is non-discretionary. It must be prorated back into the regular rate for the workweek it is earned or paid. Divide the bonus by the total hours worked that week, add the result to the hourly rate, and recalculate the overtime premium on that blended rate.
• Shift differentials. A $2-per-hour night shift premium gets added to the base rate before calculating overtime. A worker earning $15 base plus a $2 differential has a regular rate of $17 and an overtime rate of $25.50, not $22.50.
• Production incentives and piece-rate pay. If a worker earns more based on units produced or tasks completed, that compensation factors into the regular rate for the pay period.

Items excluded from the regular rate (per the statute):

• Discretionary bonuses decided entirely by the employer after the fact, with no prior promise
• Gifts and payments for periods when no work is performed (vacation pay, sick pay, holiday pay)
• Employer contributions to bona fide pension, profit-sharing, or insurance plans
• Premium pay already calculated at 1.5 times the rate or higher (such as voluntary holiday double-time pay)

If your workers regularly receive bonuses or shift differentials, you need to recalculate the blended regular rate every week they work overtime. One $400 bonus in a week with 8 overtime hours changes what you owe by enough to matter in a DOL audit.

Do State Laws Add More Rules on Top of Federal Overtime?

Yes. Several states impose stricter overtime requirements, and when state law conflicts with federal law, the rule more favorable to the employee wins. You follow whichever standard results in higher pay.

States with notable additions:

• California. Overtime starts after 8 hours in a single workday, not just after 40 hours in a week. Workers also earn double time after 12 hours in a day and for all hours worked on the seventh consecutive day in a workweek. California overtime is far more complex to track without software that handles daily totals separately from weekly totals.
• Alaska. Daily overtime after 8 hours per day, in addition to the federal weekly threshold.
• Nevada. Daily overtime after 8 hours per day for workers earning below 1.5 times the state minimum wage.
• Colorado. Daily overtime kicks in after 12 hours in a single day.

If you employ workers in multiple states, you need to track daily and weekly hours as separate figures. A time-clock system that stores raw punch records (not just weekly summaries) makes cross-state compliance auditable without a spreadsheet. Check your state-by-state requirements on Kloqk's overtime laws by state guide.

What About Double Time Pay?

Double time means paying 2x the regular rate. No federal law requires it. The FLSA sets 1.5x as the floor for overtime and stops there. Double time is either a voluntary business practice, a union contract term, or a state requirement (California being the main example).

When employers do pay double time, usually on holidays or after 12 hours in a shift, the math follows the same principle: base rate multiplied by 2. A $15 worker earns $30 per double-time hour. If those double-time hours also exceed 40 in the workweek, double time applies (since it is the higher rate). You always pay whichever premium is greater.

If you have promised double time in an offer letter or employee handbook, that promise is legally enforceable even though the law does not require it. Read your own written policies before scaling back a practice, and consult an employment attorney if you need to change a policy that has been in place for a while.

How Does Overtime Tracking Work in Practice?

The bottleneck is not the formula. It is the underlying hours data. You need accurate clock-in and clock-out records for every shift, every day, for every non-exempt worker. Federal regulations under 29 CFR 516.5 require employers to keep payroll records for at least three years and time-card records showing daily start and stop times for at least two years. Paper records are legal. They are also easy to lose, difficult to audit, and nearly impossible to query when a dispute arises.

A time-clock system handles five things that paper cannot:

1. Automatic overtime alerts. The system flags when an employee is approaching 40 hours mid-week, before the overtime is earned, while you still have time to adjust the schedule.
2. Per-workweek calculations. The payroll export separates regular hours from overtime hours without any manual sorting or formula work.
3. Multi-state rules. Good software applies California's daily overtime rule for California employees and the federal weekly rule for everyone else, without you having to manage two separate processes.
4. Audit trail. Every punch is timestamped. If an employee disputes their hours or a Department of Labor investigator requests records, the data is searchable and exportable in seconds.
5. Regular-rate accuracy. If you log bonuses in the same system as hours, the software can compute the blended regular rate automatically rather than requiring a manual spreadsheet adjustment each pay period.

Kloqk's free time clock handles all of this for unlimited employees, with overtime totals calculated automatically in every timesheet. You do not need to purchase payroll software or upgrade to a paid plan to get accurate weekly overtime figures.

Three Overtime Calculation Mistakes That Cost Employers Money

Wage audits consistently surface the same errors. Here are the three that appear most often.

1. Misclassifying employees as exempt. Putting someone on salary and calling them a "manager" does not make them exempt from overtime. The exemption test requires both the right duties (genuine management authority, professional discretion, or independent judgment on significant matters) and the right salary level. A shift lead who supervises two people but has no real hiring or firing authority likely does not meet the executive exemption duties test. Run a proper analysis before relying on any exemption, or treat the worker as non-exempt and pay overtime.

2. Leaving non-discretionary bonuses out of the regular rate. If you told workers at the start of the quarter that they would earn a $300 productivity bonus for hitting a target, that bonus is non-discretionary. It belongs in the regular rate calculation for the week it is paid or earned. Many small businesses pay the bonus without adjusting the overtime calculation and end up with years of underpayment that compound into significant liability. The adjustment formula is not complex: divide the bonus by total hours worked that week, add the per-hour result to the base rate, and recalculate overtime premium on the new blended rate.

3. Rounding that consistently favors the employer. Many time clocks round punch times to the nearest 5 or 15 minutes. That is permitted under the FLSA, but only when the rounding is neutral over time (benefiting the employee and employer with roughly equal frequency). If your system always rounds clock-in times forward and clock-out times backward, you are systematically underpaying, even if no one intended to. Pull a sample of three months of raw punch data and compare it against rounded totals. If the employer consistently comes out ahead, fix the rounding policy and audit the prior two years.

Frequently Asked Questions

How do I calculate time and a half for a $17-an-hour employee?

Multiply $17 by 1.5. The overtime rate is $25.50 per hour. For each hour worked beyond 40 in the workweek, pay $25.50 instead of $17. If the employee worked 45 hours, they earn 40 hours at $17 ($680) plus 5 hours at $25.50 ($127.50), for a total weekly gross of $807.50.

Does overtime have to be approved in advance to be paid?

No. The FLSA requires you to pay overtime for all hours worked beyond 40 in a workweek, whether or not you approved those hours in advance. If an employee works unauthorized overtime, you must pay for it. Your remedy is a disciplinary conversation or policy enforcement, not withholding the wages. Never dock overtime pay as a penalty for working unapproved extra hours.

Can I pay a higher straight-time rate instead of time and a half?

Not as a substitute for the FLSA overtime premium. However, if a salaried non-exempt employee is paid on a fluctuating workweek basis under 29 CFR 778.114, the overtime premium drops to 0.5 times the regular rate (since the salary already covers straight time). This is a narrow method with strict requirements and is not available for standard hourly employees.

Is time and a half required for weekend or holiday work?

Not under federal law. The FLSA only requires time and a half for hours over 40 in a workweek, regardless of which day those hours fall on. If an employee works Saturday as part of a 40-hour week, no premium is legally required. Some employers pay holiday or weekend premiums voluntarily or by contract, and if they do, those payments may affect the regular rate calculation for overtime purposes.

How do I handle overtime for a salaried non-exempt employee?

Divide the weekly salary by total hours worked that week to get the regular rate. Then pay an additional 0.5 times that regular rate for each overtime hour (since the salary already covers the straight-time portion of the overtime hours). Alternatively, you can pay 1.5 times the regular rate on just the overtime hours, which is simpler and always compliant.