Cambridge O Level2281

Firms

Economics 2281 Chapter Notes

What this chapter covers

Firms - Different types of firmsFirms - MergersFirms - Economies and diseconomies of scale
ShareWhatsAppPost
Firms notes

Unable to load PDF

The notes viewer could not load. Please refresh the page.

Read online free. Download a watermarked copy with a free account.

Read the notes

The full Firms notes as text: skim, search, and jump between subtopics.

~13 min read

In this chapter

  1. 1Sole Traders and Partnerships
  2. 2Private and Public Limited Companies
  3. 3Multinationals, Cooperatives & Public Corporations
  4. 4Measuring Firm Size and Growth
  5. 5Economies and Diseconomies of Scale
  6. 6Calculating Costs, Revenue, and Profit

1. Sole Traders and Partnerships

The simplest forms of business are unincorporated, meaning the business does not have a separate legal identity from its owners. The two main types are Sole Traders and Partnerships. A Sole Trader is a business owned and controlled by one person. They make all decisions, take all profits, but are also subject to unlimited liability. A Partnership is owned by 2 to 20 partners who share the work, profits, and responsibilities. Like sole traders, general partners also face unlimited liability. These structures are common for small businesses like local shops, tradespeople, and professional services like accountants or lawyers.

Key term

Unlimited Liability: The owner(s) of a business are personally responsible for all of its debts, meaning their personal assets (like their house or car) can be used to pay them off.

Examiner insight

Examiners reward answers that clearly link a feature of the business type (e.g., unlimited liability) to a specific consequence for the owner (e.g., risk to personal assets).

Common pitfall

Confusing a partnership with a private limited company. Partnerships have unlimited liability, while limited companies offer limited liability.

Worked example 15 marks

Aisha is a talented baker who wants to start her own small cake shop. She has some savings but will need a small loan. She expects to work alone initially. Advise Aisha on whether she should set up as a sole trader or a partnership, justifying your answer.

  1. 1
    1. Identify Aisha's situation: She is starting a small, new business, working alone, and has limited finance.
  2. 2
    1. Consider the Sole Trader option: This fits well. It is easy and cheap to set up. She would have full control and keep all profits. The main disadvantage is unlimited liability, which is a risk if the business fails and she has a loan.
  3. 3
    1. Consider the Partnership option: This is less suitable as she plans to work alone. A partnership requires at least one other person. While a partner could bring in more capital and skills, it would mean sharing profits and control, which doesn't seem to be her plan.
  4. 4
    1. Conclusion and Advice: Aisha should set up as a sole trader. It is the most appropriate structure for her situation as a single owner-operator. She should be aware of the risk of unlimited liability but the simplicity and full control make it the best choice for a small startup.

Recap

  • A sole trader is a business owned by one person.
  • A partnership is a business owned by 2-20 partners.
  • Both sole traders and partnerships are unincorporated businesses.
  • The key feature of unincorporated businesses is unlimited liability for the owners.
  • Sole traders keep all profits but are responsible for all debts.
  • Partners share profits, workload, and responsibility for debts.

Quick check

  1. State two advantages of a partnership compared to a sole trader.2 marks

2. Private and Public Limited Companies

When a business wants to grow, it may choose to become a company. This process is called incorporation, which gives the business a separate legal identity from its owners (shareholders). The most important advantage of this is limited liability. There are two main types. A Private Limited Company (Ltd) can only sell shares to friends, family, and associates; shares are not available to the general public. A Public Limited Company (PLC) can sell its shares to the public on a stock exchange. This allows PLCs to raise huge amounts of capital for expansion, but they face more complex legal rules and public scrutiny. Both are also known as joint-stock companies.

Key term

Limited Liability: The financial responsibility of a company's owners (shareholders) is limited to the value of their investment, protecting their personal assets from business debts.

Fun fact

The term 'Ltd' or 'PLC' after a company's name is a legal requirement that acts as a warning to people dealing with the company that the owners' liability is limited.

Worked example 14 marks

A successful private limited company (Ltd) that manufactures computer games wants to expand globally. The directors are considering converting to a public limited company (PLC). Explain one advantage and one disadvantage of this change.

  1. 1
    1. Advantage: The main advantage is the ability to raise significant capital. By floating on the stock exchange, the company can sell shares to the general public, raising millions to fund global expansion, marketing, and research into new games.
  2. 2
    1. Disadvantage: A key disadvantage is the potential loss of control. The original owners' stake will be diluted as new shares are sold. The company also becomes vulnerable to a hostile takeover if another entity buys a majority of the shares. Furthermore, they must publish detailed financial accounts and are subject to greater media and shareholder scrutiny.

Recap

  • Incorporated businesses have a separate legal identity from their owners.
  • Limited liability protects shareholders' personal assets.
  • Private Limited Companies (Ltd) cannot sell shares to the general public.
  • Public Limited Companies (PLC) can sell shares on the stock exchange.
  • PLCs can raise more capital than Ltds but have more regulations and risk of takeover.

Quick check

  1. What is the key difference between a private and a public limited company regarding the sale of shares?1 mark

3. Multinationals, Cooperatives & Public Corporations

Beyond the common structures, other organisations exist. Multinational Corporations (MNCs) are huge companies that produce or sell goods and services in more than one country, like Apple or Toyota. They bring jobs, technology, and investment to host countries but can be criticised for exploiting workers, avoiding tax, and driving local firms out of business. Cooperatives are organisations owned and controlled by their members, who share the profits. Examples include retail cooperatives (like a local food store) or worker cooperatives where the employees are the owners. Public Corporations are businesses owned by the government (the state). They are created to provide essential public services that might not be profitable for private firms, such as a national postal service or public broadcaster.

Key term

Multinational Corporation (MNC): A company that has its headquarters in one country but operates production or service facilities in at least one other country.

Examiner insight

When discussing MNCs, top answers provide a balanced view, considering both the positive and negative impacts on different stakeholders like workers, the government, and local firms.

Worked example 14 marks

Analyse two potential benefits for a developing country's economy of a large European car manufacturer opening a factory there.

  1. 1
    1. Benefit 1: Job Creation. The factory will directly create hundreds or thousands of jobs for local people, from assembly line workers to managers. This reduces unemployment and increases household incomes, leading to higher spending in the local economy (a multiplier effect).
  2. 2
    1. Benefit 2: Transfer of Technology and Skills. The MNC will bring advanced production techniques, machinery, and management skills. Local workers will be trained, increasing the human capital of the country. Local supplier firms may also have to improve their quality to work with the MNC, raising standards across the industry.

Worked example 22 marks

Explain one reason why a government might keep a service, such as the railway system, as a public corporation rather than privatising it.

  1. 1
    1. A key reason is to ensure the provision of a public service. A private firm's main goal is profit, so it might cut unprofitable but socially necessary routes (e.g., to remote villages). A state-owned public corporation can be run with a social welfare objective, ensuring the entire network is maintained for the public good, even if parts of it lose money.

Recap

  • MNCs operate in multiple countries.
  • MNCs can bring benefits (jobs, investment) and costs (exploitation, pollution) to host nations.
  • Cooperatives are owned and run by their members for their mutual benefit.
  • Public corporations are state-owned and often provide essential services.

Quick check

  1. State one benefit and one drawback of an MNC for a host country.2 marks

4. Measuring Firm Size and Growth

There is no single perfect way to measure the size of a firm. Common methods include: number of employees, amount of capital employed (value of assets), market share (the firm's percentage of total market sales), and turnover (total sales revenue). A firm can be large on one measure but small on another (e.g., a capital-intensive oil rig firm has huge capital but few employees). Firms grow in two main ways. Internal (or organic) growth involves the firm expanding its own operations by selling more products or opening new locations. External growth involves joining with another firm through a merger (a friendly agreement) or a takeover (one firm buys another). This external integration can be: Horizontal (joining a firm at the same stage of production, e.g., two car makers), Vertical (joining a firm at a different stage, e.g., a car maker buying a tyre factory), or Conglomerate (joining a firm in a totally unrelated industry).

Market Share (%) = (Firm's Sales / Total Market Sales) x 100

Key term

Integration: The joining together of two or more firms, which can be horizontal (same stage of production), vertical (different stages), or conglomerate (unrelated industries).

Common pitfall

Mixing up backwards and forwards vertical integration. Backwards is towards the raw material source; forwards is towards the final consumer.

Worked example 13 marks

A popular coffee shop chain buys the farming cooperative that grows its coffee beans. Identify and explain this type of integration.

  1. 1
    1. Identification: This is an example of backwards vertical integration.
  2. 2
    1. Explanation: It is 'vertical' because the two firms are at different stages of the production process (farming is primary sector, coffee shop is tertiary sector). It is 'backwards' because the coffee shop is buying a firm earlier in the supply chain (its supplier). This gives the coffee shop more control over the quality, price, and reliability of its main raw material.

Recap

  • Firm size can be measured by employees, capital employed, market share, or turnover.
  • Internal growth is when a firm expands by itself.
  • External growth is joining with another firm via merger or takeover.
  • Horizontal integration is merging with a competitor.
  • Vertical integration is merging with a supplier or customer.
  • Conglomerate integration is merging with an unrelated firm.

Quick check

  1. A supermarket merges with another supermarket. What type of integration is this?1 mark

5. Economies and Diseconomies of Scale

As firms grow larger and increase their scale of production, they often become more efficient. This leads to a fall in the average cost of producing each unit. These cost-saving advantages are called economies of scale. The main types include: Purchasing economies (getting discounts for buying in bulk), Technical economies (using larger, more efficient machinery), Financial economies (getting lower interest rates on loans), Managerial economies (hiring specialist managers), and Marketing economies (spreading advertising costs over more output). However, if a firm grows too large, it can suffer from diseconomies of scale. This is where long-run average costs start to rise due to problems of control, coordination, and communication in a huge organisation, and poor staff morale.

Average Cost (AC) = Total Cost (TC) / Quantity (Q)

Key term

Economies of Scale: The factors that lead to a reduction in average costs as a business increases its scale of production.

Examiner insight

High-scoring answers name a specific type of economy of scale (e.g., 'financial') and then clearly explain the mechanism by which it reduces average cost (e.g., 'banks see them as less risky, offering lower interest rates').

Worked example 14 marks

Explain how a large airline like Emirates might benefit from(a) purchasing economies and(b) marketing economies of scale.

  1. 1
    1. (a) Purchasing Economies: Emirates orders hundreds of aircraft from manufacturers like Airbus and Boeing. Because it places such large, bulk orders, it can negotiate significant discounts on the price of each plane. This lowers its average fixed cost per aircraft compared to a small airline buying just one or two planes.
  2. 2
    1. (b) Marketing Economies: Emirates runs global advertising campaigns and sponsors major sports teams like Arsenal FC. The cost of this marketing is huge, but it is spread over millions of passengers worldwide. This means the advertising cost per passenger is very low, a benefit a small local airline could not achieve.

Recap

  • Economies of scale cause long-run average costs to fall as output increases.
  • Key types include purchasing, technical, financial, and managerial economies.
  • Diseconomies of scale cause long-run average costs to rise as a firm becomes too large.
  • Reasons for diseconomies include poor communication, coordination issues, and low worker morale.

Quick check

  1. What is the term for rising average costs when a firm grows too large?1 mark

6. Calculating Costs, Revenue, and Profit

To understand a firm's performance, we must analyse its costs and revenues. Costs are split into two types. Fixed Costs (FC) do not change with output, such as rent for a factory. Variable Costs (VC) change directly with output, such as raw materials. Total Cost (TC) is simply fixed costs plus variable costs. Revenue is the money a firm receives from selling its output. Total Revenue (TR) is the price per unit multiplied by the quantity sold (P x Q). Profit (or Loss) is the ultimate measure of success; it is the difference between total revenue and total cost (TR - TC). If TR is greater than TC, the firm makes a profit. If TC is greater than TR, it makes a loss. The break-even point is where the firm makes neither a profit nor a loss, which occurs when Total Revenue = Total Cost.

Total Cost (TC) = Total Fixed Cost (TFC) + Total Variable Cost (TVC)

Average Cost (AC) = Total Cost (TC) / Quantity (Q)

Total Revenue (TR) = Price (P) x Quantity (Q)

Profit / Loss = Total Revenue (TR) - Total Cost (TC)

Break-even Point: TR = TC

Key term

Break-even Point: The level of output at which a firm's total revenue equals its total costs, resulting in neither a profit nor a loss.

Common pitfall

Confusing revenue with profit. Revenue is the total income from sales, whereas profit is what remains after all costs have been deducted from revenue.

Worked example 14 marks

A firm produces clocks. Its costs and revenues are shown below.

Output per weekTotal Cost ($)Total Revenue ($)
1,00010,00013,000
2,00016,00024,000
3,00018,00033,000
4,00028,00040,000

(a) Calculate the profit at an output of 3,000 clocks.(b) Calculate the average cost when producing 2,000 clocks.

  1. 1
    1. (a) To find profit, use the formula Profit = TR - TC. At an output of 3,000 clocks, TR = $33,000 and TC = $18,000.
  2. 2
    1. Calculation: Profit = $33,000 - $18,000 = $15,000.
  3. 3
    1. (b) To find average cost, use the formula AC = TC / Quantity. At an output of 2,000 clocks, TC = $16,000.
  4. 4
    1. Calculation: Average Cost = $16,000 / 2,000 = $8 per clock.

Recap

  • Fixed costs do not vary with output; variable costs do.
  • Total Cost = Fixed Costs + Variable Costs.
  • Total Revenue = Price x Quantity.
  • Profit = Total Revenue - Total Cost.
  • Break-even is the output level where Total Revenue equals Total Cost.

Quick check

  1. A firm's total revenue is $100,000 and its total cost is $85,000. Calculate its profit.1 mark

End-of-chapter exercise

Test yourself on the whole chapter. Work through these before moving on.

  1. Define 'unlimited liability' and state which type of business organisation it applies to.2 marks
  2. A firm produces 800 chairs at a total cost of $40,000. Calculate the average cost per chair.2 marks
  3. Explain two reasons why an entrepreneur might choose to set up a private limited company rather than operate as a sole trader.4 marks
  4. Distinguish between horizontal integration and vertical integration, providing a real-world example for each.4 marks
  5. Analyse how a large car manufacturer, such as Toyota, might benefit from both technical and financial economies of scale.6 marks
  6. A bakery has total fixed costs of $5,000 per month. In one month, it produces 10,000 bread loaves. The variable cost per loaf is $0.50. It sells each loaf for $2.00. Calculate the bakery's profit or loss for the month.5 marks
  7. Discuss why the government of a country might both encourage and seek to control the activities of multinational corporations.6 marks
  8. Evaluate the different ways a firm's size can be measured. Is any one measure the most reliable indicator of size?8 marks
  9. Explain why a firm that has grown very large might begin to experience diseconomies of scale, and analyse the possible consequences for the business.6 marks
  10. A successful partnership of architects wants to expand by opening offices in other countries. Discuss the advantages and disadvantages of changing the business to a public limited company (PLC) to finance this expansion.8 marks

Go deeper

Practise and revise with member-only material for this chapter.

Workbook

Exam-style practice questions with full worked solutions.

Unlock with a plan

Chapter at a Glance

A single-page summary of every key idea for fast revision.

Unlock with a plan

Free notes are just the start.

Unlock every Workbook and Chapter at a Glance, and generate your own worksheets and predicted papers.

Explore plans

Related chapters

The nature of the basic economic problemFactors of productionOpportunity costProduction possibility curve (PPC) diagramsThe role of markets in allocating resourcesDemand