Chapter 3: Labor Costing and Remuneration
Labor cost is the second major element of product cost after materials. Effective labor costing involves determining the cost of labor for each job or process, controlling labor costs, and designing remuneration systems that motivate workers while maintaining cost efficiency. This chapter covers labor cost classification, time-keeping, remuneration methods, and labor cost control.
3.1 Classification of Labor Costs
| Type | Definition | Treatment | Example |
|---|---|---|---|
| Direct Labor | Workers directly involved in production | Charged directly to product cost | Machine operators, welders, assembly workers |
| Indirect Labor | Workers supporting production but not directly involved | Treated as factory overhead | Supervisors, maintenance staff, quality inspectors |
Components of Labor Cost
| Component | Description | Nepal Context |
|---|---|---|
| Basic Wages | Payment for normal working hours | Minimum wage: NPR 17,300/month (2024) |
| Overtime | Payment for hours beyond normal (usually 1.5x-2x rate) | Nepal Labor Act: OT at 1.5 times normal rate |
| Allowances | Dearness allowance, travel, housing | DA commonly paid in Nepali factories |
| Employer Contributions | Provident fund, social security, insurance | 10% employer contribution to SSF |
| Bonus | Festival bonus, performance bonus | One month's salary as Dashain bonus (mandatory) |
3.2 Remuneration Methods
Time-Based Systems
| Method | Formula | Advantages | Disadvantages |
|---|---|---|---|
| Time Rate | Earnings = Hours worked × Rate per hour | Simple, guaranteed income, quality focus | No incentive for efficiency, difficult to control costs |
| High Day Rate | Higher hourly rate with strict standards | Attracts skilled workers, maintains quality | Still no direct link to output |
Piece-Rate Systems
| Method | Formula | Advantages | Disadvantages |
|---|---|---|---|
| Straight Piece Rate | Earnings = Units produced × Rate per unit | Direct incentive, easy calculation | No guaranteed minimum, quality may suffer |
| Differential Piece Rate (Taylor) | Low rate below standard, high rate at/above standard | Strong incentive to meet standard | Penalizes slow workers heavily |
Incentive/Bonus Systems
| System | Formula | Time Saved Benefit | Feature |
|---|---|---|---|
| Halsey Plan | Earnings = T×R + 50% × (S-T) × R | 50% to worker, 50% to employer | Guaranteed base + bonus for efficiency |
| Rowan Plan | Earnings = T×R + (S-T)/S × T × R | Proportional bonus (decreasing %) | Prevents rushing; bonus % decreases as time saved increases |
Where T = Time taken, S = Standard time, R = Rate per hour
Worked Example
Given: Standard time = 10 hours, Time taken = 7 hours, Rate = NPR 100/hour
Time Rate: 7 × 100 = NPR 700
Piece Rate: (assuming standard output = 1 unit/10 hours, rate per unit = 1000): NPR 1,000
Halsey: 7×100 + 50%×(10-7)×100 = 700 + 150 = NPR 850
Rowan: 7×100 + (10-7)/10 × 7 × 100 = 700 + 210 = NPR 910
3.3 Labor Turnover
Labor turnover is the rate at which employees leave and are replaced. High turnover increases costs (recruitment, training, lost productivity) and affects quality.
| Formula | Calculation |
|---|---|
| Separation Method | LTO = (Number of separations / Average workers) × 100 |
| Replacement Method | LTO = (Number of replacements / Average workers) × 100 |
| Flux Method | LTO = (Separations + New hires) / Average workers × 100 |
Costs of Labor Turnover
| Preventive Costs | Replacement Costs |
|---|---|
| Good working conditions, fair wages | Recruitment advertising, interviewing |
| Training programs, career development | Training new employees, lower initial productivity |
| Employee benefits, welfare facilities | Increased scrap/defects during learning period |
3.4 Idle Time and Overtime
| Concept | Types | Treatment |
|---|---|---|
| Normal Idle Time | Tea breaks, machine setup, maintenance | Included in labor cost (factory overhead) |
| Abnormal Idle Time | Power cuts, strikes, machine breakdowns | Charged to Costing P&L (not to product) |
| Overtime Premium | Extra payment above normal rate | If for specific job: direct cost. If general: overhead |
3.5 Comprehensive Remuneration Comparison — All Methods
Scenario: Standard time = 12 hours per job. Rate = NPR 200/hour. Piece rate = NPR 2,400/job. Three workers complete the job in different times:
| Method | Worker A (8 hrs) | Worker B (12 hrs) | Worker C (15 hrs) |
|---|---|---|---|
| Time Rate | 8×200 = 1,600 | 12×200 = 2,400 | 15×200 = 3,000 |
| Piece Rate | 2,400 | 2,400 | 2,400 |
| Halsey (50% bonus) | 8×200 + 50%(12-8)×200 = 1,600+400 = 2,000 | 12×200 + 0 = 2,400 | 15×200 + 0 = 3,000 |
| Rowan | 8×200 + (4/12)×8×200 = 1,600+533 = 2,133 | 12×200 + 0 = 2,400 | 15×200 + 0 = 3,000 |
| Taylor Differential | Low rate NPR 180, High rate NPR 220. A meets standard: 1×220×(12/8) = 2,640 | At standard: 2,400 | Below: 1×180×(12/15) = 2,160 |
Key Observations:
1. Time rate rewards slow workers (C earns most!) — no efficiency incentive
2. Piece rate pays equally regardless of time — rewards efficiency but no guaranteed minimum
3. Halsey gives worker 50% of time saved — guaranteed base + moderate incentive
4. Rowan gives proportional bonus — higher than Halsey when time saved is small, lower when time saved is large (prevents rushing)
5. Taylor punishes below-standard workers severely — strongest incentive but can demoralize
Rowan vs Halsey Crossover: When exactly 50% of time is saved, both give identical earnings. Below 50% savings, Rowan pays more. Above 50% savings, Halsey pays more. This makes Rowan self-limiting — workers cannot earn excessively by rushing.
3.6 Overtime Premium — Detailed Treatment
| Situation | Normal Rate Portion | Premium Portion | Example |
|---|---|---|---|
| OT for specific job | Direct labor cost of that job | Direct labor cost of that job | Customer requests urgent order requiring OT → full OT cost charged to that job |
| OT due to general overload | Direct labor cost of respective jobs | Factory overhead (spread across all jobs) | Peak season OT → premium is overhead, not charged to specific job |
| OT due to inefficiency | Direct labor cost | Abnormal cost → P&L | Machine breakdown caused delay → OT premium written off, not to product cost |
Numerical Example: Worker works 50 hours in a week. Normal hours = 40. OT rate = 1.5× normal. Normal rate = NPR 200/hr.
Normal earnings: 40 × 200 = NPR 8,000
OT earnings: 10 × 200 × 1.5 = NPR 3,000
Total: NPR 11,000
Breakdown: Normal rate for all hours = 50 × 200 = NPR 10,000 (direct labor). OT premium = 10 × (300-200) = NPR 1,000 (overhead or direct depending on cause).
3.7 Labor Efficiency and Productivity Measures
| Measure | Formula | Example | Interpretation |
|---|---|---|---|
| Labor Productivity | Output / Labor hours | 5,000 units / 2,500 hours = 2 units/hour | Higher is better |
| Labor Efficiency Ratio | Standard hours / Actual hours × 100 | 2,400 / 2,500 × 100 = 96% | Below 100% = inefficiency |
| Activity Ratio | Standard hours for actual output / Budgeted hours × 100 | 2,400 / 2,600 × 100 = 92.3% | Output achieved vs planned |
| Capacity Ratio | Actual hours / Budgeted hours × 100 | 2,500 / 2,600 × 100 = 96.2% | Capacity utilization |
3.8 Labor Cost Control in Nepal
| Challenge | Description | Control Measure |
|---|---|---|
| High Absenteeism | Workers absent for festivals, agriculture seasons, family events | Attendance incentives; planned leave calendars; cross-training |
| Low Skill Level | Many workers lack formal training | On-the-job training; CTEVT certification programs; apprenticeships |
| Union Demands | Annual wage demands beyond productivity gains | Productivity-linked wages; gain sharing; transparent financial data |
| Migration | Trained workers leave for foreign employment | Competitive compensation; career paths; retention bonuses |
| Compliance | Labor Act provisions increase costs (SSF 20%, Dashain bonus, gratuity) | Budget for mandatory costs; automate payroll compliance |
Practice Questions
Short Answer:
1. Distinguish direct and indirect labor with examples.
2. Compare time rate and piece rate systems.
3. Explain the Halsey and Rowan bonus plans with formulas.
4. What is labor turnover? How is it measured?
5. How are idle time and overtime treated in cost accounts?
Long Answer:
6. Standard time for a job is 8 hours. Worker completes it in 5 hours. Rate = NPR 150/hour. Calculate earnings under: Time rate, Piece rate (rate per unit = NPR 1,200), Halsey, and Rowan plans. (15 marks)
7. Compare the Halsey and Rowan incentive plans. Under what circumstances does each give higher earnings to the worker? Show graphically. (15 marks)
8. Discuss the factors affecting choice of remuneration system. Which system is most suitable for a Nepali garment factory? (15 marks)
9. Explain the concept of labor turnover. What are its causes, costs, and control measures? (15 marks)
10. A factory has 500 workers. During the year: workers left 50, new hires 60, transfers in 10. Calculate labor turnover using all three methods. (15 marks)
Exam Tips: ✓ Halsey and Rowan calculations are always asked ✓ Memorize both formulas and practice with different numbers ✓ Compare all methods in a single table for clarity ✓ Know the treatment of idle time and overtime ✓ Labor turnover formulas are frequently tested