Factor Markets and Income Distribution
Factor markets are markets for inputs — labour, land, capital, and entrepreneurship. They determine wages, rents, interest rates, and profits, explaining income distribution.
Derived Demand
Factor demand is derived demand — derived from demand for the final product. A restaurant demands chefs because consumers demand food. Firm hires labour until MRP = wage: MRP = MR × MP. The MRP curve is the firm’s factor demand curve — downward-sloping due to diminishing marginal productivity.
Labour Market and Wages
In competitive markets, wages = intersection of labour supply and demand. Wage differences arise from: skill/education (human capital), compensating differentials (dangerous jobs pay more), discrimination, market power (unions, monopsony), efficiency wages, geographic differences. Minimum wage: Nepal’s minimum wage (Rs 17,500/month) — debate between unemployment effects and living standards.
Rent
Economic rent: payment for land in fixed supply. Since supply is perfectly inelastic, rent is determined entirely by demand. Higher land demand in Kathmandu = higher rent than rural Jumla. Quasi-rent: earnings above transfer earnings in the short run. A talented CEO’s salary above alternatives is economic rent.
Interest
Return on capital — price of borrowing/reward for saving. Real interest rate = nominal rate minus inflation. Determined by supply of loanable funds (saving) and demand (investment). Factors: NRB policy, inflation expectations, risk, time period. Invest if expected return > interest rate (cost of capital).
Profit
Normal profit: minimum return to keep entrepreneur in business (opportunity cost). Supernormal profit: earnings above normal — signals resource allocation, attracts new firms. Profit rewards risk-taking, signals direction, motivates efficiency.
Income Distribution
Lorenz curve: plots cumulative % of income vs cumulative % of population. Gini coefficient: 0 = perfect equality, 1 = perfect inequality. Nepal’s Gini ≈ 0.33 (moderate inequality). Government policies: progressive taxation, social welfare, education subsidies, minimum wages, land reform.
Poverty
Absolute poverty: below subsistence level. Relative poverty: below median proportion. Nepal reduced poverty from ~42% (1995) to ~17% (2020s) largely through remittances and growth. Urban-rural and social group disparities remain.
Summary
Factor markets determine income distribution through wages, rent, interest, and profit. Derived demand and MRP determine factor prices. Understanding these helps businesses make hiring/investment decisions and evaluate economic policy.
Four Factors of Production and Their Returns
| Factor | Return | Who Receives | Nepal Example |
|---|---|---|---|
| Land | Rent | Landlords | Land rent in Kathmandu: Rs 50,000-500,000/month for commercial space |
| Labour | Wages/Salary | Workers/Employees | Minimum wage Rs 17,500/month; IT professionals Rs 50,000-200,000 |
| Capital | Interest | Investors/Lenders | NRB base rate ~7%; commercial loan rate 10-14% |
| Entrepreneurship | Profit | Entrepreneurs/Owners | Binod Chaudhary — Nepal’s first billionaire from CG Group |
Worked Example: Marginal Revenue Product
A Nepali garment factory pays workers Rs 800/day. Should it hire a 6th worker?
| Workers | Total Output (shirts) | MP (extra shirts) | Price per shirt (Rs) | MRP = MP × Price | Wage (Rs) | Hire? |
|---|---|---|---|---|---|---|
| 1 | 10 | 10 | 200 | 2,000 | 800 | ✔ Yes |
| 2 | 22 | 12 | 200 | 2,400 | 800 | ✔ Yes |
| 3 | 32 | 10 | 200 | 2,000 | 800 | ✔ Yes |
| 4 | 40 | 8 | 200 | 1,600 | 800 | ✔ Yes |
| 5 | 45 | 5 | 200 | 1,000 | 800 | ✔ Yes |
| 6 | 48 | 3 | 200 | 600 | 800 | ✘ No |
Decision: Hire 5 workers (MRP Rs 1,000 > wage Rs 800). Do NOT hire 6th worker (MRP Rs 600 < wage Rs 800). The firm hires until MRP = Wage. The MRP curve IS the firm’s demand curve for labour.
Lorenz Curve and Gini Coefficient
| Country | Gini Coefficient | Interpretation |
|---|---|---|
| Nepal | 0.33 | Moderate inequality |
| India | 0.35 | Moderate-high inequality |
| USA | 0.39 | High inequality |
| Sweden | 0.25 | Low inequality |
| South Africa | 0.63 | Extreme inequality |
Nepal’s Gini of 0.33 indicates moderate inequality, but this masks significant urban-rural and caste-based disparities. Kathmandu’s per capita income is several times higher than remote hill districts.
Exam Tips
Tip 1: MRP worked example (hire until MRP = wage) is the most tested factor market topic. Tip 2: Four factors with their returns is a basic but frequently asked question. Tip 3: Lorenz curve and Gini coefficient with country comparisons shows analytical depth. Tip 4: Nepal minimum wage and labour market issues (brain drain, labour shortage in agriculture) are relevant exam topics.