body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
line-height: 1.6;
color: #333;
max-width: 800px;
margin: 0 auto;
padding: 20px;
}
.calc-container {
background-color: #f8f9fa;
border: 1px solid #e9ecef;
border-radius: 8px;
padding: 30px;
margin-bottom: 40px;
box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}
.calc-header {
text-align: center;
margin-bottom: 25px;
}
.calc-header h2 {
margin: 0;
color: #2c3e50;
}
.row {
display: flex;
flex-wrap: wrap;
margin: 0 -10px;
}
.col {
flex: 1;
min-width: 250px;
padding: 0 10px;
margin-bottom: 20px;
}
label {
display: block;
margin-bottom: 8px;
font-weight: 600;
font-size: 0.95em;
color: #495057;
}
input[type="number"] {
width: 100%;
padding: 12px;
border: 1px solid #ced4da;
border-radius: 4px;
font-size: 16px;
box-sizing: border-box;
transition: border-color 0.2s;
}
input[type="number"]:focus {
border-color: #4dabf7;
outline: none;
}
.section-title {
width: 100%;
padding: 0 10px;
margin-bottom: 15px;
color: #1c7ed6;
font-weight: bold;
border-bottom: 2px solid #e9ecef;
padding-bottom: 5px;
}
button.calc-btn {
width: 100%;
background-color: #228be6;
color: white;
border: none;
padding: 15px;
font-size: 18px;
font-weight: bold;
border-radius: 4px;
cursor: pointer;
transition: background-color 0.2s;
margin-top: 10px;
}
button.calc-btn:hover {
background-color: #1c7ed6;
}
#result-area {
margin-top: 25px;
padding: 20px;
background-color: #fff;
border: 1px solid #dee2e6;
border-radius: 4px;
display: none;
}
.result-row {
display: flex;
justify-content: space-between;
margin-bottom: 10px;
padding-bottom: 10px;
border-bottom: 1px solid #f1f3f5;
}
.result-row:last-child {
border-bottom: none;
margin-bottom: 0;
padding-bottom: 0;
}
.result-label {
color: #868e96;
}
.result-val {
font-weight: bold;
color: #212529;
}
.final-growth {
font-size: 1.4em;
color: #228be6;
}
.positive {
color: #2eb85c;
}
.negative {
color: #e55353;
}
.content-section {
margin-top: 50px;
}
h2, h3 {
color: #2c3e50;
}
p {
margin-bottom: 1.5em;
}
.formula-box {
background: #e7f5ff;
padding: 15px;
border-left: 4px solid #228be6;
font-family: monospace;
margin: 20px 0;
overflow-x: auto;
}
function calculateGrowth() {
// 1. Get input values
var prevOut = parseFloat(document.getElementById('prevOutput').value);
var prevLab = parseFloat(document.getElementById('prevLabor').value);
var currOut = parseFloat(document.getElementById('currOutput').value);
var currLab = parseFloat(document.getElementById('currLabor').value);
// 2. Validate inputs
if (isNaN(prevOut) || isNaN(prevLab) || isNaN(currOut) || isNaN(currLab)) {
alert("Please enter valid numbers in all fields.");
return;
}
if (prevLab <= 0 || currLab 0) {
growthRate = ((currProd – prevProd) / prevProd) * 100;
} else {
// Handle edge case where previous productivity is 0 (though unlikely in valid scenario)
growthRate = 0;
}
// 5. Calculate Absolute Change
var absChange = currProd – prevProd;
// 6. Display Results
document.getElementById('result-area').style.display = 'block';
// Format numbers
// We assume standard rounding to 2 decimals, but if values are small, we might need more precision.
// Dynamic precision checking could be done, but fixed 2-3 decimals is standard for business display.
document.getElementById('dispPrevProd').innerHTML = prevProd.toFixed(3) + " units/hr";
document.getElementById('dispCurrProd').innerHTML = currProd.toFixed(3) + " units/hr";
document.getElementById('dispAbsChange').innerHTML = absChange.toFixed(3);
var growthElem = document.getElementById('dispGrowthRate');
growthElem.innerHTML = growthRate.toFixed(2) + "%";
// Add color classes based on positive/negative growth
growthElem.className = "result-val final-growth"; // reset
if (growthRate > 0) {
growthElem.classList.add("positive");
} else if (growthRate < 0) {
growthElem.classList.add("negative");
}
}
How to Calculate Growth Rate of Average Labor Productivity
Labor productivity is a primary economic indicator that measures the efficiency of labor in the production of goods and services. Calculating the growth rate of this productivity is essential for businesses and economies to understand how efficiency changes over time.
What is Average Labor Productivity?
Average labor productivity is defined as the total output (measured in units produced or the monetary value of GDP) divided by the total labor input (measured in total hours worked or number of employed workers). It essentially answers the question: "How much value does one hour of labor generate?"
The Formula
To find the growth rate, you must first calculate the productivity for two distinct periods (e.g., Year 1 and Year 2).
Step 1: Calculate Productivity for Each Period
Productivity = Total Output / Total Labor Input
Step 2: Calculate Growth Rate Percentage
Growth Rate = [(Current Productivity – Previous Productivity) / Previous Productivity] × 100
Example Calculation
Let's look at a manufacturing company to see how the numbers work in practice:
- Period 1 (Previous): The factory produced 10,000 widgets using 500 labor hours.
- Period 2 (Current): The factory produced 12,000 widgets using 550 labor hours.
Step 1: Determine Productivity Levels
- Previous Productivity = 10,000 / 500 = 20 widgets/hour
- Current Productivity = 12,000 / 550 = 21.818 widgets/hour
Step 2: Apply Growth Formula
- Growth Rate = ((21.818 – 20) / 20) × 100
- Growth Rate = (1.818 / 20) × 100
- Growth Rate = 9.09%
In this example, even though labor hours increased, the output increased at a higher rate, resulting in a 9.09% increase in labor productivity.
Why This Metric Matters
For Businesses: Rising labor productivity growth often leads to higher profitability. It indicates that the workforce is becoming more efficient, often due to better technology, improved processes, or higher skill levels.
For Economies: On a macroeconomic scale, labor productivity growth is the main driver of rising living standards. It allows companies to pay higher wages without raising prices, thereby controlling inflation while boosting consumer power.
Common Inputs for Calculation
- Total Output: Usually Real GDP for countries, or Gross Value Added (GVA) / Total Units Produced for companies.
- Labor Input: Total hours worked is the most accurate measure, though total number of employees is sometimes used (headcount productivity).