Labor Market Forces And Government Intervention (Copy)
8.3.1 Demand for Labour as a Derived Demand
- Derived Demand:
- Demand for labour arises from demand for the goods and services labour helps to produce.
- If demand for a product increases, demand for labour to produce that product also increases.
- Labour is not demanded for itself but for its productive contribution.
8.3.2 Factors Affecting Demand for Labour in a Firm or Occupation
- Demand for the Product:
- Higher demand for goods increases demand for labour to produce more.
- Productivity of Labour:
- More productive workers increase marginal product and revenue, increasing labour demand.
- Cost of Other Inputs:
- If capital becomes cheaper, firms may substitute labour with machinery, reducing labour demand.
- Wage Rate:
- Higher wages decrease quantity demanded of labour (movement along demand curve).
- Technology:
- Technological improvements may increase or decrease labour demand depending on whether they complement or substitute labour.
- Government Policies:
- Regulations, minimum wage laws, and taxes can affect labour demand.
8.3.3 Causes of Shifts in and Movement Along the Demand Curve for Labour
- Movement Along the Demand Curve:
- Caused by change in wage rate.
- Higher wage → lower quantity demanded; lower wage → higher quantity demanded.
- Shifts in Demand Curve:
- Changes in product demand, productivity, input prices, or government policies shift the entire curve right (increase) or left (decrease).
8.3.4 Marginal Revenue Product (MRP) Theory
- Definition:
- MRP of labour is the additional revenue generated from employing one extra unit of labour.
- Calculation:
- MRP = Marginal Product (MP) × Marginal Revenue (MR)
- For competitive firms, MR = price of output, so MRP = MP × Price.
- Derivation of Labour Demand:
- Firms hire labour up to point where wage = MRP.
- Labour demand curve equals the MRP curve, which slopes downward due to diminishing MP.
8.3.5 Factors Affecting the Supply of Labour to a Firm or Occupation
- Wage Factors:
- Higher wages incentivize more workers to supply labour or current workers to supply more hours.
- Non-Wage Factors:
- Working conditions, job security, career prospects, location, and benefits.
- Social and cultural factors, such as gender roles or education levels.
- Labour market policies and training availability.
8.3.6 Causes of Shifts in and Movement Along the Supply Curve of Labour
- Movement Along Supply Curve:
- Caused by changes in wage rate.
- Higher wage → higher quantity of labour supplied.
- Shifts in Supply Curve:
- Changes in non-wage factors like working conditions, population size, education, or government policy.
- Immigration or emigration affecting labour pool size.
8.3.7 Wage Determination in Perfect Markets
- Equilibrium Wage Rate:
- Wage where labour demand equals labour supply.
- Equilibrium Employment Level:
- Number of workers employed at equilibrium wage.
- Perfect Competition:
- Many employers and workers, wage takers with no power to set wages.
8.3.8 Wage Determination in Imperfect Markets
- Influence of Trade Unions:
- Can negotiate higher wages and better conditions for members.
- May restrict labour supply or exert bargaining power to push wages above equilibrium.
- Influence of Government:
- National minimum wage laws set wage floors to protect low-income workers.
- Can lead to unemployment if set above equilibrium wage.
- Influence of Monopsony Employers:
- Single or dominant employer in labour market with wage-setting power.
- Wage paid is lower than in competitive market.
- Employment is lower; monopsonist hires less labour at lower wage.
8.3.9 Determination of Wage Differentials by Labour Market Forces
- Wage differences arise due to:
- Skill levels and qualifications.
- Experience and training.
- Working conditions (hazardous, unpleasant jobs pay more).
- Geographical mobility and local labour market conditions.
- Union presence and bargaining power.
- Discrimination and social factors.
8.3.10 Transfer Earnings and Economic Rent
- Transfer Earnings:
- Minimum payment required to keep a factor of production in its current use.
- Opportunity cost of labour; what a worker could earn in the next best alternative job.
- Economic Rent:
- Payment to a factor of production above its transfer earnings.
- Extra income due to scarcity, unique skills, or market power.
- Factors Affecting Transfer Earnings and Economic Rent:
- Availability of substitutes.
- Mobility of labour.
- Uniqueness of skills or qualifications.
- Geographical constraints.
Diagrams
Diagram 1: Labour Demand and Supply Curves
Wage
↑
| S (Labour Supply)
| /
| /
| /
| /
| /
| /
| /
| /
|/___________________________ D (Labour Demand)
|
|
|
|______________________________→ Employment
- Equilibrium at intersection determines wage and employment.
Diagram 2: Marginal Revenue Product (MRP) and Labour Demand
Wage / MRP
↑
| MRP Curve (downward sloping)
| *
| * *
| * *
|* *
|________________________________→ Labour Employed
Wage
- Labour hired where Wage = MRP.
Diagram 3: Monopsony Labour Market
Wage
↑
| S (Labour Supply)
| /
| /
| / MC of Labour (above S)
| /
|/___________________________ D (Labour Demand)
|
|
|
|______________________________→ Employment
- Monopsonist sets wage below competitive level.
- Employs fewer workers.
Diagram 4: Wage Differentials
Wage
↑
| High-skilled jobs
| _________
| | |
| | |
| |_________|
| Medium-skilled jobs
| _____
| | |
| |_____|
| Low-skilled jobs
| __
| | |
|_|_|
|___________________________→ Different Occupations
Diagram 5: Transfer Earnings and Economic Rent
Wage
↑
| Economic Rent
| ___________
| | |
| | |
| |___________|
| Transfer Earnings
|__________________
|___________________________→ Labour Employed
Written and Compiled By Sir Hunain Zia, World Record Holder With 154 Total A Grades, 7 Distinctions and 11 World Records For Educate A Change A2 Level Economics Full Scale Course