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Microlesson · 5-min read

Efficiency Rating and Employee Productivity

## Efficiency Rating

### Why It Matters

When a firm uses payment-by-results (piece rate/incentive wages), payment is directly linked to output. The firm must measure each worker's efficiency to calculate their correct pay. Efficiency ratings also feed into manpower planning and employee requirement budgets.

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### Three-Step Process

Step 1: Determine Standard Time (Performance Standard)

  • Technique: Time & Motion Study or Work Study
  • Worker sample: Use a heterogeneous group (mix of fast, average, slow workers) to set a fair standard
  • Add contingency allowances for unforeseen interruptions

Step 2: Measure Actual Performance

  • Record actual output and time taken per worker
  • Develop a reliable tracking system for individual performance

Step 3: Compute Efficiency Rating

$$\text{Efficiency (\%)} = \frac{\text{Standard Time}}{\text{Actual Time}} \times 100$$

EfficiencyInterpretation
≥ 100%Worker is efficient (meets or beats the standard)
< 100%Worker is inefficient (takes longer than standard)

> Standard Time = time the job should take. Actual Time = time it did take.

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## Employee Productivity

Definition: Output produced per unit of input (human resources, materials, capital, energy, etc.)

### Factors Affecting Productivity

FactorImpact
Skillful workforceTasks completed competently and efficiently
Proper job placementRight person in the right role
Training & developmentContinuous skill improvement
Optimal workforce sizeAvoids over-staffing (waste) and under-staffing (overload)
Work study & standardizationEstablishes fair wages and simplifies processes

### Methods to Improve Productivity

  • Regular performance evaluations with constructive feedback
  • Incentive and recognition programs
  • Positive work culture fostering teamwork and communication
  • Adoption of modern technology and tools
  • Conducive work environment with adequate resources

Worked example

### Example 1

Efficiency Calculation: Standard time for a task = 4 hours. Worker A completes it in 3.5 hours → Efficiency = (4 ÷ 3.5) × 100 = 114.3% (efficient — gets a higher incentive payment). Worker B takes 5 hours → Efficiency = (4 ÷ 5) × 100 = 80% (inefficient — lower incentive payment).

### Example 2

Manpower Planning using Efficiency: A factory needs to produce 10,000 units next month. Standard time per unit = 2 hours. Workforce efficiency = 80%. Required worker-hours = (10,000 × 2) ÷ 0.80 = 25,000 hours. Each worker works 200 hours/month → workers required = 25,000 ÷ 200 = 125 workers.

⚠️ Common exam mistakes

  • Inverting the efficiency formula — Standard Time is in the NUMERATOR (time allowed), Actual Time is in the denominator (time taken)
  • Using a homogeneous sample of only fast workers to set standard time — this creates an unfairly high benchmark; a heterogeneous group is required
  • Thinking efficiency above 100% is a problem — it means the worker beat the standard, which is desirable in a payment-by-results scheme
  • Confusing standard time with actual time in exam problems — always re-read which is which before applying the formula
Reference:
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