Cambridge IGCSE0455

Firms and production

Economics 0455 Chapter Notes

What this chapter covers

Firms and production - Demand for factors of productionFirms and production - Labour-intensive and capital-intensive productionFirms and production - Production and productivity
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In this chapter

  1. 1Production and Productivity
  2. 2Understanding Business Costs
  3. 3Revenue, Profit and Break-Even
  4. 4The Aims of a Business
  5. 5Labour vs. Capital Intensive Production

1. Production and Productivity

Production is the process of combining inputs (factors of production like land, labour, and capital) to create outputs (goods and services) to satisfy consumer wants. Productivity, on the other hand, is a measure of efficiency. It measures how much output is produced per unit of input over a period of time. For example, labour productivity measures the output per worker. Firms constantly strive to increase productivity because it means they can produce more with the same amount of resources, which leads to lower average costs and potentially higher profits.

Productivity of Labour = Total Output / Number of Workers

Productivity of Capital = Total Output / Units of Capital

Key term

Productivity: The rate of output per unit of input, measuring the efficiency of production.

Examiner insight

Examiners reward students who can clearly distinguish between an increase in total production (more output) and an increase in productivity (more output per worker or machine).

Common pitfall

Confusing production (the total amount made) with productivity (the rate of production). A firm can increase production by hiring more workers, but this might decrease productivity if the new workers are less efficient or get in each other's way.

Worked example 12 marks

A factory employs 50 workers and produces 10,000 shirts per week. Calculate the labour productivity.

  1. 1

    Step 1: Identify the formula for labour productivity: Total Output / Number of Workers.

  2. 2

    Step 2: Substitute the given values into the formula: 10,000 shirts / 50 workers.

  3. 3

    Step 3: Calculate the result: 200 shirts per worker per week.

Worked example 24 marks

The same factory invests in new sewing machines. Output increases to 12,000 shirts per week, still with 50 workers. Explain the effect on production and productivity.

  1. 1

    Step 1: Identify the change in production. Production has increased from 10,000 to 12,000 shirts per week.

  2. 2

    Step 2: Calculate the new labour productivity: 12,000 shirts / 50 workers = 240 shirts per worker per week.

  3. 3

    Step 3: Compare the old and new productivity. Productivity has increased from 200 to 240 shirts per worker.

  4. 4

    Step 4: Conclude that the investment in new machinery has increased both total production and labour productivity.

Recap

  • Production is the process of making goods and services.
  • Productivity is a measure of efficiency, typically output per input.
  • An increase in productivity leads to lower average costs.
  • Firms can increase productivity through training, new technology, and better management.
  • Do not confuse an increase in total output with an increase in productivity.

Quick check

  1. What is the key difference between production and productivity?2 marks
  2. State one way a firm can increase the productivity of its labour.1 mark

2. Understanding Business Costs

To understand a firm's profitability, we must first understand its costs. Costs can be split into two main types. Fixed Costs (FC) are costs that do not change regardless of the level of output, such as rent on a factory, insurance, or salaries for administrative staff. Variable Costs (VC) are costs that change directly with the level of output, such as raw materials, components, and wages for production workers paid by the hour. Total Cost (TC) is simply the sum of fixed and variable costs. To make comparisons, firms often look at Average Cost (AC), which is the cost per unit of output, calculated by dividing the total cost by the quantity produced.

Total Cost (TC) = Fixed Costs (FC) + Total Variable Costs (TVC)

Total Variable Cost (TVC) = Variable Cost per unit × Quantity (Q)

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

Key term

Fixed Cost: A cost of production that does not change with the level of output in the short run.

Common pitfall

Incorrectly classifying a cost. For example, assuming all wages are variable costs; a manager's monthly salary is a fixed cost, whereas a production worker's piece-rate wage is a variable cost.

Worked example 15 marks

A bakery has monthly fixed costs of $2,000. The variable cost to produce one loaf of bread is $1.50. In March, it produces 4,000 loaves. Calculate:a) Total Variable Cost,b) Total Cost, andc) Average Cost.

  1. 1

    a) Total Variable Cost (TVC) = Variable Cost per unit × Quantity = $1.50 × 4,000 = $6,000.

  2. 2

    b) Total Cost (TC) = Fixed Costs + Total Variable Costs = $2,000 + $6,000 = $8,000.

  3. 3

    c) Average Cost (AC) = Total Cost / Quantity = $8,000 / 4,000 = $2.00 per loaf.

Recap

  • Fixed costs do not vary with output (e.g., rent).
  • Variable costs vary directly with output (e.g., raw materials).
  • Total Cost is the sum of fixed and variable costs.
  • Average Cost is the total cost divided by the quantity produced.
  • As output increases, fixed costs are spread over more units, which can help to reduce average cost.

Quick check

  1. Is the electricity bill for factory machinery a fixed or variable cost? Explain your answer.2 marks
  2. What is the formula for Total Cost?1 mark

3. Revenue, Profit and Break-Even

Revenue is the income a firm earns from selling its goods or services. Total Revenue (TR) is calculated by multiplying the price per unit by the quantity of units sold. Profit is the primary goal for most firms and is the reward for taking risks. It is calculated as the difference between total revenue and total cost. If costs are greater than revenue, the firm makes a loss. A crucial concept for any business is the break-even point. This is the level of output and sales where Total Revenue equals Total Cost (TR = TC). At this point, the firm is making neither a profit nor a loss. Producing more than the break-even quantity results in a profit, while producing less results in a loss.

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

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

Break-even Point (in units) = Fixed Costs / (Price per unit - Variable Cost per unit)

Key term

Break-even Point: The level of output at which a firm's total revenue equals its total costs, resulting in zero profit or loss.

Examiner insight

Candidates who can accurately calculate the break-even point and explain its significance to a business, such as for setting targets or making pricing decisions, often score highly.

Worked example 13 marks

A business sells 1,000 phone cases a month at a price of $15 each. Its total costs for the month are $9,000. Calculate the firm's monthly profit.

  1. 1

    Step 1: Calculate Total Revenue (TR). TR = Price × Quantity = $15 × 1,000 = $15,000.

  2. 2

    Step 2: Use the profit formula: Profit = Total Revenue - Total Cost.

  3. 3

    Step 3: Substitute the values: Profit = $15,000 - $9,000 = $6,000.

  4. 4

    Step 4: The firm's monthly profit is $6,000.

Worked example 24 marks

A new cafe has fixed costs of $5,000 per month. The average price of a coffee is $4, and the average variable cost (milk, beans, cup) is $1. How many coffees must it sell per month to break even?

  1. 1

    Step 1: Identify the formula for the break-even point in units: Fixed Costs / (Price - Variable Cost per unit).

  2. 2

    Step 2: The value (Price - Variable Cost per unit) is also called the contribution per unit. Calculate this first: $4 - $1 = $3.

  3. 3

    Step 3: Substitute the values into the break-even formula: Break-even Point = $5,000 / $3.

  4. 4

    Step 4: Calculate the result: 1666.67. Since you cannot sell a fraction of a coffee, the cafe must sell 1,667 coffees to ensure it covers all its costs.

  5. 5

    Step 5: The break-even point is 1,667 coffees per month.

Recap

  • Total Revenue is the total income from sales (Price x Quantity).
  • Profit is the money left after all costs have been deducted from revenue (TR - TC).
  • A loss occurs when total costs are greater than total revenue.
  • The break-even point is where total revenue equals total cost.
  • Knowing the break-even point helps firms set sales targets.

Quick check

  1. If a firm's TR = $50,000 and its TC = $55,000, what is the result?1 mark
  2. What is 'contribution per unit'?1 mark

4. The Aims of a Business

While it's easy to assume all firms just want to make as much money as possible, their objectives can be more varied. The main objective for most private sector firms is profit maximisation, which means producing at the level of output that creates the largest possible gap between total revenue and total cost. However, firms may have other goals. For a new business, the primary aim might simply be survival. Other firms might aim for growth, seeking to increase their market share or expand into new areas. Some managers might aim for sales revenue maximisation to increase their personal prestige or bonuses. Additionally, some organisations like cooperatives or social enterprises have social objectives, such as benefiting their members or the community, which can be more important than maximising profit.

Key term

Profit Maximisation: The business objective of producing at the level of output where the positive difference between total revenue and total cost is greatest.

Fun fact

The LEGO Group's official motto 'Only the best is good enough' reflects a focus on product quality, which builds brand loyalty. This strong brand allows it to charge premium prices, helping it achieve its ultimate long-term goal of profit maximisation.

Worked example 16 marks

Discuss why a large, established supermarket might choose to pursue objectives other than profit maximisation in the short run.

  1. 1

    Step 1: Acknowledge that profit maximisation is the likely long-term goal.

  2. 2

    Step 2: Suggest an alternative short-term goal, such as growth in market share. The supermarket might lower prices (sacrificing short-term profit) to attract customers from rivals.

  3. 3

    Step 3: Suggest another goal, such as deterring new entrants. The supermarket could keep prices low to make the market seem unprofitable to potential competitors.

  4. 4

    Step 4: Mention corporate social responsibility (CSR). The firm might invest in community projects or environmentally friendly practices. This costs money and reduces short-term profit but improves brand image and can lead to higher long-term profits.

  5. 5

    Step 5: Conclude that these other objectives are often strategic steps taken to secure or increase long-term profitability.

Recap

  • The primary aim of most private firms is profit maximisation.
  • New firms may prioritise survival over immediate profit.
  • Firms may aim for growth to gain market power and economies of scale.
  • Social objectives, like community welfare, are central to organisations like cooperatives.
  • Short-term goals like sales maximisation may be pursued to achieve long-term profit maximisation.

Quick check

  1. State one reason why a firm might not try to maximise profits in the short run.1 mark

5. Labour vs. Capital Intensive Production

Firms must decide on the combination of labour and capital they use in production. This leads to two main types of production methods. Labour-intensive production relies heavily on people, using a higher proportion of labour compared to machinery. Examples include hairdressing, fine dining restaurants, and high-end tailoring. Capital-intensive production uses a high proportion of machinery, equipment, and technology relative to labour. Examples include car manufacturing, oil refining, and automated bottling plants. The choice between these methods depends on several factors, including the nature of the product, the cost and availability of labour versus capital, and technological advancements. Factor substitution is the process of switching from one method to another, for example, replacing factory workers with robots if wages rise significantly or robotic technology becomes cheaper and more effective.

Key term

Factor Substitution: The process of replacing one factor of production with another, such as replacing workers with machinery, in response to changes in their relative prices or productivity.

Common pitfall

Assuming that 'capital-intensive' means expensive. It's about the ratio of capital to labour in the production process, not the absolute cost of the business.

Worked example 14 marks

A newspaper publisher decides to close its printing press and publish only online. Explain whether this represents a shift towards more capital-intensive or labour-intensive production.

  1. 1

    Step 1: Identify the original production method. Printing presses are large, expensive pieces of capital equipment, so traditional newspaper production was highly capital-intensive.

  2. 2

    Step 2: Identify the new production method. Online publishing requires servers, software, and computers (capital), but also a team of journalists, editors, and web developers (labour).

  3. 3

    Step 3: Analyse the change. The firm has eliminated the most capital-heavy part of its operation (the physical printing press). While it still uses capital (computers, servers), the process is now more reliant on the skilled labour of its digital team.

  4. 4

    Step 4: Conclude that the shift is likely towards a less capital-intensive method, or at least a different form of capital intensity, where the ratio of skilled labour to capital has increased in importance.

Worked example 24 marks

Explain two reasons why a clothing manufacturer might choose to use a labour-intensive production method in a country with low wages.

  1. 1

    Reason 1: Cost. If wages are very low, the cost of employing many workers may be cheaper than the cost of buying, installing, and maintaining expensive machinery. This lowers the firm's total costs and increases potential profit.

  2. 2

    Reason 2: Flexibility and Skill. For certain garments, particularly high-fashion or intricate items, human skill may be superior to what machines can produce. Labour can also be more flexible in switching between different designs compared to re-tooling a machine.

Recap

  • Labour-intensive production uses more labour relative to capital.
  • Capital-intensive production uses more capital relative to labour.
  • The choice depends on relative costs, technology, and the nature of the product.
  • Factor substitution is replacing one factor with another, e.g., workers with machines.
  • Rising wages are a common reason for firms to substitute capital for labour.

Quick check

  1. Is a car wash that uses automated brushes and dryers capital-intensive or labour-intensive?1 mark
  2. Give one reason a firm might substitute labour for capital.1 mark

End-of-chapter exercise

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

  1. Define 'variable cost' and provide one example relevant to a restaurant.2 marks
  2. A firm sells 2,000 units of its product at a price of $40 each. Its fixed costs are $30,000 and its total variable costs are $20,000. Calculate the firm's profit or loss.4 marks
  3. Explain, with examples, the difference between labour-intensive and capital-intensive production.4 marks
  4. A company that makes furniture has fixed costs of $50,000 per year. It sells each piece of furniture for $400. The variable cost per piece is $150. Calculate the number of furniture pieces the company needs to sell to break even.4 marks
  5. Analyse two reasons why an increase in the productivity of labour might lead to an increase in the demand for labour.6 marks
  6. Explain how a fall in a firm's fixed costs would affect its total costs, average costs, and break-even point.6 marks
  7. A firm's total output increases by 30% in a year, while its workforce increases by 10%. Analyse the likely impact on the firm's labour productivity and its average costs.6 marks
  8. Discuss whether profit maximisation is always the main objective of a private sector firm.8 marks
  9. Analyse the factors that might cause a firm to substitute capital for labour in its production process.8 marks
  10. Evaluate the usefulness of break-even analysis for a new business start-up. Consider both its benefits and its limitations.10 marks

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