Overtime pay is a crucial aspect of employment law, ensuring that employees are compensated fairly for working beyond their standard hours. In many countries, including the United States under the Fair Labor Standards Act (FLSA), non-exempt employees are entitled to overtime pay for hours worked exceeding 40 in a workweek. This calculator helps you determine your regular pay, overtime pay, and total earnings based on your hourly rate, hours worked, and the applicable overtime multiplier.
The Math Behind Overtime Pay
The calculation involves a few key steps:
Regular Pay: This is calculated by multiplying your standard hourly rate by the number of regular hours you worked. The standard workweek is typically 40 hours.
Regular Pay = Hourly Rate × Regular Hours Worked
Overtime Rate: This is your regular hourly rate multiplied by an overtime multiplier. The most common multiplier is 1.5 (time-and-a-half), but some agreements or laws might stipulate 2.0 (double time) or other rates.
Overtime Rate = Hourly Rate × Overtime Multiplier
Overtime Pay: This is calculated by multiplying your overtime rate by the number of overtime hours you worked.
Overtime Pay = Overtime Rate × Overtime Hours Worked
Total Pay: This is the sum of your regular pay and your overtime pay.
Total Pay = Regular Pay + Overtime Pay
Example Calculation
Let's consider an example:
Hourly Rate: $25.50
Regular Hours Worked: 40 hours
Overtime Hours Worked: 5 hours
Overtime Multiplier: 1.5 (time-and-a-half)
Using the formulas:
Regular Pay = $25.50 × 40 = $1020.00
Overtime Rate = $25.50 × 1.5 = $38.25
Overtime Pay = $38.25 × 5 = $191.25
Total Pay = $1020.00 + $191.25 = $1211.25
This calculator automates these steps, providing a quick and accurate way to estimate your earnings when working overtime.
Important Considerations
While this calculator provides a good estimate, always refer to your employment contract, company policy, and local labor laws for the definitive rules regarding overtime pay. Some roles or industries may have specific exemptions or different calculation methods.
function calculateOvertime() {
var hourlyRateInput = document.getElementById("hourlyRate");
var regularHoursInput = document.getElementById("regularHours");
var overtimeHoursInput = document.getElementById("overtimeHours");
var overtimeMultiplierInput = document.getElementById("overtimeMultiplier");
var regularPayResultDiv = document.getElementById("regularPayResult");
var overtimePayResultDiv = document.getElementById("overtimePayResult");
var totalPayResultDiv = document.getElementById("totalPayResult");
var hourlyRate = parseFloat(hourlyRateInput.value);
var regularHours = parseFloat(regularHoursInput.value);
var overtimeHours = parseFloat(overtimeHoursInput.value);
var overtimeMultiplier = parseFloat(overtimeMultiplierInput.value);
// Input validation
if (isNaN(hourlyRate) || hourlyRate < 0 ||
isNaN(regularHours) || regularHours < 0 ||
isNaN(overtimeHours) || overtimeHours < 0 ||
isNaN(overtimeMultiplier) || overtimeMultiplier <= 0) {
regularPayResultDiv.innerHTML = "Regular Pay: Invalid Input";
overtimePayResultDiv.innerHTML = "Overtime Pay: Invalid Input";
totalPayResultDiv.innerHTML = "Total Pay: Invalid Input";
return;
}
var regularPay = hourlyRate * regularHours;
var overtimeRate = hourlyRate * overtimeMultiplier;
var overtimePay = overtimeRate * overtimeHours;
var totalPay = regularPay + overtimePay;
regularPayResultDiv.innerHTML = "Regular Pay: $" + regularPay.toFixed(2);
overtimePayResultDiv.innerHTML = "Overtime Pay: $" + overtimePay.toFixed(2);
totalPayResultDiv.innerHTML = "Total Pay: $" + totalPay.toFixed(2);
}