Calculate your workforce absence percentage and estimated financial impact.
Average headcount during the period.
Standard workdays (exclude weekends/holidays).
Sum of all days missed by all employees.
To estimate financial loss.
Absenteeism Rate0.00%
Total Scheduled Workdays:0
Productivity Days Lost:0
Estimated Financial Cost:$0.00
function calculateAbsenteeism() {
// 1. Get Inputs
var numEmployees = parseFloat(document.getElementById('numEmployees').value);
var workDays = parseFloat(document.getElementById('workDays').value);
var totalAbsentDays = parseFloat(document.getElementById('totalAbsentDays').value);
var avgHourlyWage = parseFloat(document.getElementById('avgHourlyWage').value);
var hoursPerDay = parseFloat(document.getElementById('hoursPerDay').value);
// 2. Validate Inputs
if (isNaN(numEmployees) || numEmployees <= 0 || isNaN(workDays) || workDays <= 0) {
alert("Please enter valid numbers for Employees and Workdays.");
return;
}
if (isNaN(totalAbsentDays) || totalAbsentDays < 0) {
totalAbsentDays = 0;
}
if (isNaN(hoursPerDay) || hoursPerDay 0) {
rate = (totalAbsentDays / totalScheduledDays) * 100;
}
// 5. Logic: Calculate Cost (if wage provided)
var totalCost = 0;
if (!isNaN(avgHourlyWage) && avgHourlyWage > 0) {
// Cost = Absent Days * Hours Per Day * Hourly Wage
totalCost = totalAbsentDays * hoursPerDay * avgHourlyWage;
}
// 6. Display Results
var resultContainer = document.getElementById('resultContainer');
var finalRateEl = document.getElementById('finalRate');
var totalScheduledEl = document.getElementById('totalScheduledResult');
var daysLostEl = document.getElementById('daysLostResult');
var costEl = document.getElementById('costResult');
var benchmarkFill = document.getElementById('benchmarkFill');
var interpretation = document.getElementById('rateInterpretation');
resultContainer.style.display = 'block';
finalRateEl.innerText = rate.toFixed(2) + "%";
totalScheduledEl.innerText = totalScheduledDays.toLocaleString();
daysLostEl.innerText = totalAbsentDays.toLocaleString();
// Format Currency
costEl.innerText = new Intl.NumberFormat('en-US', { style: 'currency', currency: 'USD' }).format(totalCost);
// Benchmark Logic (Visual Feedback)
// Generally, 4% is concerning
var interpretText = "";
var fillClass = "";
if (rate <= 1.5) {
fillClass = "good";
interpretText = "Excellent! Your rate is very low compared to industry averages.";
} else if (rate <= 3.5) {
fillClass = "good"; // Still acceptable
interpretText = "Good. This falls within a standard acceptable range.";
} else if (rate <= 5) {
fillClass = "warn";
interpretText = "Warning. Your absenteeism is higher than average.";
} else {
fillClass = ""; // Red by default in CSS logic if not overridden, actually defined as default bg in CSS above is red, classes override it.
// My CSS logic: base is red, classes are green/yellow.
// Wait, CSS says: .benchmark-fill { background: #e74c3c; } (Red)
// So remove classes for red.
interpretText = "Critical. High absenteeism may be impacting productivity severely.";
}
// Reset classes
benchmarkFill.className = 'benchmark-fill';
if (rate <= 3.5) benchmarkFill.classList.add('good');
else if (rate 6 stays red (base class)
benchmarkFill.style.width = Math.min(rate * 10, 100) + "%"; // Scale for visual bar
interpretation.innerText = interpretText;
interpretation.style.color = (rate > 5) ? "#c0392b" : "#7f8c8d";
}
How to Calculate Absenteeism Rate for All Employees
Understanding workforce availability is critical for maintaining productivity and morale. The absenteeism rate is a key HR metric that measures the percentage of unscheduled absences against the total scheduled work time. While some absence is inevitable due to illness or emergencies, a high rate can indicate underlying issues with workplace culture, stress, or management.
The Standard Absenteeism Formula
To calculate the rate manually, you need three core data points: the number of employees, the number of workdays in the period (month or year), and the total days lost to absence.
Absenteeism Rate = (Total Days Absent / Total Scheduled Workdays) × 100
Where Total Scheduled Workdays is calculated as:
Total Scheduled Workdays = Average # of Employees × Workdays in Period
Step-by-Step Calculation Example
Let's assume you run a company with 50 employees. You want to calculate the absenteeism rate for the month of November, which has 22 workdays.
Calculate Potential Capacity: 50 employees × 22 days = 1,100 total scheduled workdays.
Track Absences: Your HR records show that 5 employees were sick for 2 days each, and 1 employee missed 5 days. Total absent days = (5 × 2) + 5 = 15 days.
Apply Formula: (15 ÷ 1,100) × 100 = 1.36%.
In this example, a 1.36% rate is generally considered healthy.
What is a "Normal" Absenteeism Rate?
While benchmarks vary by industry, most HR experts consider an absenteeism rate between 1.5% and 2.5% to be healthy. Rates consistently measuring above 4% often trigger a review of attendance policies or employee engagement strategies.
Why Calculate the Cost?
The percentage tells you about time, but not money. By multiplying the total hours lost by the average hourly wage, you can estimate the direct financial impact. This calculator includes a cost estimator to help you quantify the "hidden" expense of missing shifts.
Types of Absences to Include
Unscheduled Absences: Sick days, unexcused absences, family emergencies.
Do NOT Include: Approved vacation time, public holidays, or jury duty (as these are usually planned for).