Foundations of Economics and the Australian Economic Environment

The Economic Problem of Scarcity

The economic problem of scarcity is the fundamental concept in economics, arising from the conflict between finite resources and infinite human desires.

• Core Causes of Scarcity:
  • Limited Resources: There is a finite amount of resources available in the economy, including land, labor, capital, and raw materials.
  • Unlimited Wants: Human desires for goods and services (e.g., better food, housing, technology, or leisure) always exceed the amount available.
• The Three Key Economic Questions: Because resources cannot satisfy all wants, every economy must decide:
  • What to produce? Deciding which specific goods and services should be created.
  • How to produce? Determining the most efficient methods or technology for production.
  • For whom to produce? Deciding the distribution of goods and services among society.
• Categories of Limited Resources:
  • Land: Finite space for farming, housing, or industry. (Example: A city must choose between using land for parks, housing, or commercial buildings).
  • Capital: Limited machines, factories, and tools. (Example: A car manufacturer with $10$ machines must choose between producing family cars or sports cars).
  • Money/Financial Resources: Limited budgets for individuals, businesses, or governments. (Example: A family choosing between a holiday, a new car, or home renovations).
  • Time: Individuals only have $24$ hours a day. (Example: A student choosing between studying for exams or working a part-time job).

The Role of Opportunity Cost

Opportunity cost is the value of the next best alternative that is forgone when a choice is made. It is essential for managing limited resources like time, money, and labor.

• Personal Example: Studying on a Friday night means forgoing the fun of going to the movies with friends.
• Money Example: Spending $20$ dollars on fast food means that money cannot be used to buy a new shirt.
• Business Example: A company choosing to build a new factory over a new store; the store is the opportunity cost.
• Importance of Opportunity Cost: Understanding it helps individuals and businesses make smarter choices, utilize time and money better, and think critically before deciding.

The Circular Flow Model

The circular flow of income is a model demonstrating how an economy works by showing the movement of money between different sectors. It ranges from a simple 2-sector model to a complex 5-sector model.

The Two-Sector Model

This model assumes only two economic players:

• Households: Individuals living in the economy.
• Firms: Businesses producing goods and services.
• Interactions:
  • Factor Market: Households provide economic resources (land, labor, capital) to firms. In exchange, firms pay households income (wages, rent, interest, profit).
  • Goods Market: Firms use resources to produce goods and services. Households use their income to purchase these for consumption.

The Four-Sector Model

Introduces two additional players:

• The Government: Collects taxation ($T$) from households and firms. In return, provides public goods (health, education, roads) through government expenditure ($G$).
• Financial Sector: Includes banks and credit unions. Households and firms put savings ($S$) into banks, which then provide investment ($I$) loans to firms.

The Five-Sector Model

Introduces the Overseas Sector (The rest of the world):

• Imports ($M$): Households and firms buy goods and services produced in other countries.
• Exports ($X$): Firms sell goods and services to other countries.

Leakages and Injections

• Leakages (Money leaving the model): Savings ($S$), Taxation ($T$), and Imports ($M$).
• Injections (Money entering the model): Investment ($I$), Government Expenditure ($G$), and Exports ($X$).
• Economic Activity: Leakages rarely equal injections. When they are out of balance, the level of economic activity fluctuates.

The Price Mechanism: Demand and Supply

The price mechanism refers to the forces of demand and supply determining the price and quantity of goods and services. It helps solve the problem of scarcity and research efficient resource allocation.

Demand

• Definition: The quantity of a product consumers are willing and able to purchase at a given price and time.
• Law of Demand: As prices increase, demand decreases; as prices decrease, demand increases.
• Factors shifting the demand curve:
  • Increase (Shift Right): Rise in income, positive change in tastes (e.g., blueberries as a "superfood"), population growth, rise in prices of substitute goods, fall in prices of complementary goods, or expectation of future price rises.
  • Decrease (Shift Left): Fall in income, negative change in tastes, population decrease, fall in prices of substitute goods, rise in prices of complementary goods, or expectation of future price falls.

Supply

• Definition: The quantity of a good or service businesses are willing and able to offer for sale at a given price and time.
• Law of Supply: As prices increase, the quantity supplied increases; as prices decrease, supply decreases.
• Factors shifting the supply curve:
  • Increase (Shift Right): Increased efficiency (new technology), fall in production costs (lower wages/fertilizer costs), improved climate (rainfall), or more suppliers.
  • Decrease (Shift Left): Decreased efficiency (pests), rise in production costs, unfavorable climate (drought), or fewer suppliers.

Market Equilibrium

• Market Equilibrium occurs at the intersection of the demand and supply curves. This is the point where buyers and sellers agree on a price and quantity.
• Example: If demand for blueberries and supply for blueberries intersect at $6 \text{ dollars}$ and $600$ punnets, that is the equilibrium point.

Economic Growth and the Business Cycle

Economic growth is the persistent rise in Gross Domestic Product (GDP). The business cycle refers to the fluctuations in economic activity over time.

Phases of the Business Cycle

• Expansion/Recovery: GDP begins to rise.
• Boom: The peak of the cycle with high production, high spending, and full employment. However, booms lead to inflation (general rise in prices) when the economy reaches its production limit.
  • Features: High income, high wages, high interest rates (due to short supply of loanable funds), and high inflation.
• Contraction: Economic activity begins to slow.
• Recession: GDP falls persistently for $6$ months or longer. Recessions are caused by a lack of spending, not a lack of production capacity.
  • Features: Low income, high unemployment, low inflation, slow wage growth, high bankruptcy rates, and low interest rates.
• Depression: An extended period of falling GDP.

The Role of Government in the Economy

The Australian government intervenes in the economy to achieve specific objectives and maintain stability.

Major Economic Objectives

1. Economic Growth: Increasing GDP to create jobs, raise living standards, and provide tax revenue.
2. Low Unemployment: Aiming for a healthy rate, usually around $4\% \text{--} 5\%$.
3. Price Stability: Controlling inflation to protect purchasing power and encourage investment.
4. Balance of Payments / Strong Currency: Maintaining healthy trade (imports vs. exports) to keep the Australian dollar stable.
5. Fair Distribution of Wealth: Reducing inequality through progressive taxes and welfare payments to promote social stability.
6. Environmental Sustainability: Ensuring growth does not harm natural resources for future generations.

Reasons for Government Intervention

• Correcting Market Failures: Providing public goods (roads, defense) and regulating negative externalities (pollution).
• Promoting Economic Stability: Adjusting spending and taxes to prevent extreme booms or recessions.
• Redistributing Income: Using progressive taxes (wealthier pay more) and welfare (Age Pension, JobSeeker) to reduce poverty.
• Protecting Consumers and Workers: Laws preventing scams, ensuring workplace safety (Work Health and Safety Act), and setting minimum wages through the Fair Work Commission.
• Encouraging Sustainable Development: Regulating carbon emissions and supporting renewable energy.

Methods of Government Intervention

• Fiscal Policy: Managed by the government using spending and taxation. (Example: JobKeeper payments during COVID-19 provided a wage subsidy of $1,500$ dollars per fortnight per worker for eligible businesses to keep workers employed).
• Monetary Policy: Controlled by the Reserve Bank of Australia (RBA) using interest rates (the cash rate). Lowering rates stimulates spending; raising rates slows inflation. (Example: In $2020$, the RBA cut rates to a record low of $0.1\%$).
• Regulation and Legislation: Creating rules for business conduct and worker protection. The ACCC (Australian Competition and Consumer Commission) monitors competition. (Example: Qantas was fined $90 \text{ million dollars}$ in $2025$ relating to the illegal sacking of ground staff).
• Provision of Goods and Services: Direct funding for Medicare (health), public education (schools/unis), and infrastructure (NBN, roads). Australia spent approximately $252.5 \text{ billion dollars}$ on health in $2022\text{--}2023$, which was $9.9\%$ of GDP.

Questions & Discussion

• The Great Depression Case Study:
  • Students are asked to list the economic effects and brainstorm policies to fix a depressed economy.
  • Reference is made to John Maynard Keynes and his theories on the government's role in a depressed economy.
• Unemployment Article Analysis:
  • Investigation of the "new normal" of unemployment below $4\%$.
  • Comparison of current rates to historical trends since $1974$.
  • Discussion on the RBA's target rates versus actual rates and concerns regarding wages and inflation.
• Welfare and Social Services:
  • Discussion on welfare payment increases (starting March 20) due to indexation.
  • Increases to the Age Pension, Disability Support Pension, and Carer Payment.
  • The new JobSeeker rate for single individuals aged $22$ and over without children.
• Cost-of-Living Crisis (2025 Focus):
  • Discussion on pressures affecting Australian households and youth.
  • Debate prompt: "The government is doing enough to address Australia’s cost-of-living crisis."
  • Policy Pitch ideas: Housing subsidies, rent caps, job training, and youth transport discounts.