OCR GCSE Economics: The labour market, wages, pay, money and interest rates (J205)

This guide follows the OCR GCSE (9-1) Economics (J205) specification, Version 2.0 (June 2026), for first assessment in 2019. It covers topic 2.7 (the labour market) and topic 2.8 (the role of money and financial markets), which sit in the content of Introduction to Economics (J205/01). The specification has no tiers, so all of it applies to you. Every number, firm and place in the worked examples is made up for illustration.

Pair it with the revision notes and the practice questions. The wider topic is in The Role of Markets and Money. Course pages: OCR GCSE Economics hub and the printable checklist. Not sure where to start? Try the free diagnostics.

What this unit covers

Spec	You must be able to
2.7	Explain the role and operation of the labour market, including how workers and employers interact
2.7	Analyse how wages are set by supply and demand, including the factors that move each
2.7	Explain and calculate gross pay and net pay, with deductions for income tax, national insurance and pension contributions
2.8	Explain money as a medium of exchange
2.8	Explain the role of the financial sector, including banks, building societies and insurance companies
2.8	Evaluate its importance for consumers, producers and government
2.8	Analyse how different interest rates affect saving, borrowing and investment
2.8	Calculate the effect on savings and borrowings of a change in the interest rate

2.7 The role of the labour market

A labour market is where people sell their work and firms buy it. Workers are the suppliers of labour. Employers are the demanders. The price of labour is the wage.

Employers want enough workers with the right skills at a cost that leaves a profit. Workers want pay, secure hours and decent conditions. They meet through job adverts, applications, interviews, offers and negotiation. If an employer cannot fill posts, it can raise the wage, train people or accept fewer skills. If workers cannot find jobs, they can accept lower pay, retrain or look elsewhere.

Demand for labour is a derived demand. A firm hires people only because customers want what those people help to make. If demand for bread falls, the bakery needs fewer bakers.

Wage determination

The demand curve for labour slopes downwards: at a lower wage, firms want to hire more workers. The supply curve slopes upwards: a better-paid job draws in more people who can and want to do it. The equilibrium wage is where the two curves cross, so the number of workers wanted equals the number on offer.

Illustrative market: skilled bakers in Town A.

Wage per hour	Bakers wanted (demand)	Bakers available (supply)	Result
£8	120	20	shortage of 100
£9	100	50	shortage of 50
£10	80	80	equilibrium
£11	60	110	surplus of 50
£12	40	140	surplus of 100

Equilibrium is £10 an hour with 80 bakers employed. Below £10, firms compete for scarce workers and bid wages up. Above £10, more people want the job than there are posts, so wages tend to drift down.

A sketch in words: wage is on the vertical axis and number of workers is on the horizontal axis. The demand line runs from top left to bottom right. The supply line runs from bottom left to top right. They cross at (80 workers, £10).

Shifts and movements

A change in the wage causes a movement along a curve. Anything else shifts the curve.

Suppose a new restaurant chain opens in Town A and wants 50 more bakers at every wage. Demand shifts right. New demand is 170, 150, 130, 110 and 90 at £8 to £12. Supply is unchanged. At £11 demand is now 110 and supply is 110, so the new equilibrium is £11 with 110 bakers. Wages rise by £1 (10%) and employment rises by 30 (37.5%).

Check: (£11 - £10) / £10 × 100 = 10%. (110 - 80) / 80 × 100 = 37.5%.

What shifts the demand for labour

• Demand for the product. A boom in sales lifts demand for the workers who make it.
• Productivity. Output per worker matters: a more productive hire adds more to what the firm earns.
• Machinery, its price and its capability. Cheaper machines can replace workers (demand shifts left) or make workers more productive (demand shifts right).

What shifts the supply of labour

• The skills, qualifications and training needed. Long, costly training means fewer people qualify.
• The size of the working-age population, including migration.
• Pay in other jobs. If similar jobs pay more, people move away.
• Working conditions and non-wage benefits such as hours, safety, flexibility and holidays.

Why wages differ between jobs

Surgeons earn more than shelf-stackers because supply is small (years of training, high entry standards) and demand is high (the work adds large value). Where supply is large and anyone can do the job, wages are lower. A job with unpleasant conditions may pay extra to attract workers.

Chain of reasoning for a question: cause (for example, more people train as electricians) → curve that shifts (supply right) → new equilibrium (lower wage, more employed) → effect on workers and employers (cheaper hiring, lower pay for each worker).

Gross pay and net pay

Gross pay is everything earned before anything is taken off. Net pay, or take-home pay, is the amount the worker actually receives.

Net pay = gross pay - income tax - national insurance - pension contributions

Income tax and national insurance go to the government. Pension contributions go into a retirement saving scheme for the worker.

Worked example 1: weekly pay with overtime

Illustrative rules for Country A (not real rates): income tax 20% on gross pay above £240 a week; national insurance 8% on gross pay above £190 a week; pension 5% of gross pay.

A worker is paid £11.50 an hour for 37 hours, plus 6 hours of overtime at time and a half.

Basic pay      = 37 × £11.50           = £425.50
Overtime rate  = £11.50 × 1.5          = £17.25
Overtime pay   = 6 × £17.25            = £103.50
Gross pay      = £425.50 + £103.50     = £529.00
Income tax     = (529 - 240) × 0.20    = £57.80
Nat. insurance = (529 - 190) × 0.08    = £27.12
Pension        = 529 × 0.05            = £26.45
Deductions     = 57.80 + 27.12 + 26.45 = £111.37
Net pay        = 529.00 - 111.37       = £417.63

Worked example 2: annual pay and a pay rise

Illustrative rules for Country A: income tax 20% on gross pay above £12,500 a year; national insurance 7% on gross pay above £9,000 a year; pension 4% of gross pay.

Gross pay £30,000
Income tax = (30,000 - 12,500) × 0.20 = £3,500
NI         = (30,000 - 9,000) × 0.07  = £1,470
Pension    = 30,000 × 0.04            = £1,200
Net pay    = 30,000 - 3,500 - 1,470 - 1,200 = £23,830
Per month  = 23,830 / 12 = £1,985.83 (to the nearest penny)

Net pay is 23,830 / 30,000 × 100 = 79.4% of gross.

Now the worker gets a £1,800 rise to £31,800. Tax becomes £3,860, NI £1,596 and pension £1,272, so net pay is £25,072. Net pay rises by £1,242, which is 69% of the £1,800 gross rise. The rest goes in extra deductions. Always compare net pay with net pay, or gross with gross.

2.8 Money as a medium of exchange

Money is anything generally accepted in payment for goods and services. As a medium of exchange it removes the problem of barter. In barter, a baker with spare loaves who wants shoes must find a shoemaker who wants bread at the same moment. That is called a double coincidence of wants. With money, the baker sells bread for money and then spends it on shoes from anyone.

Money makes trade quicker, lets people specialise and makes prices easy to compare. The specification names the medium of exchange role, so concentrate on that.

The financial sector

The financial sector links people who have money to spare with people who need it. Three institutions are named in the specification.

• Banks take deposits, make loans, provide accounts and payment services.
• Building societies are owned by their members and focus on savings accounts and mortgages (loans to buy property).
• Insurance companies collect premiums from many customers and pay out to the few who suffer a loss, so risk is shared.

Importance for consumers, producers and government

Group	How the sector helps	Limits
Consumers	Safe place to save; loans and mortgages; insurance against loss; payment services	Borrowing has to be repaid with interest; poor choices lead to debt
Producers	Loans to invest in machines and premises; accounts and payments; insurance for stock and premises	Loans must be repaid even if sales fall; firms with weak records may be refused
Government	Borrowing for spending; a route for interest rate policy; payments system for taxes and benefits	Heavy borrowing adds to future repayments; a failing institution can harm the wider economy

Judgement: the sector is highly important because most households and firms depend on it for payments, saving and borrowing. Its value depends on stable, well-run institutions. If banks lend too freely and borrowers cannot repay, harm spreads widely.

Interest rates

The interest rate is a percentage price: what a saver is paid and what a borrower pays. A central bank sets a base rate, and banks and building societies use it to guide their own rates.

Interest rate rises	Interest rate falls
Saving becomes more rewarding, so saving rises	Saving is less rewarding, so saving falls
Borrowing costs more, so borrowing falls	Borrowing is cheaper, so borrowing rises
Fewer projects earn more than their loan cost, so investment falls	More projects pay for themselves, so investment rises

Chain: higher rate → loans cost more → fewer households and firms borrow → less spending and investment. Strength depends on how sensitive people are to the change and on what else is happening.

Worked example 3: effect on savings

Saver with £3,800 for one year, at 1.5% and at 2.5% (illustrative).

At 1.5%: 3,800 × 0.015 = £57
At 2.5%: 3,800 × 0.025 = £95
Rise in interest earned = £38

If the interest is added each year, over 3 years at 2.5% the balance is 3,800 × 1.025³ = £4,092.18, so £292.18 interest. At 1.5% it is 3,800 × 1.015³ = £3,973.58, so £173.58.

Worked example 4: effect on borrowings

Loan of £18,000 at 4.5% and at 6.0% (illustrative, interest for one year).

At 4.5%: 18,000 × 0.045 = £810
At 6.0%: 18,000 × 0.060 = £1,080
Extra cost = £270 a year, or £22.50 a month

A larger loan magnifies this. On a £150,000 mortgage a rise from 3% to 4% adds £1,500 a year, or £125 a month.

Worked example 5: a firm deciding whether to invest

A firm can buy a machine for £40,000 that adds £2,600 profit a year before loan costs. Return = 2,600 / 40,000 × 100 = 6.5%.

Loan at 5%: interest £2,000, profit left £600  -> worth doing
Loan at 7%: interest £2,800, profit left -£200 -> not worth doing

A rise from 5% to 7% turns a profitable investment into a loss.

Common errors

• Subtracting only one deduction, or using gross pay when the question asks for net pay.
• Applying a tax rate to all gross pay when the question says it applies only above an allowance.
• Treating a new wage as if it moved the whole curve.
• Saying interest rates affect only borrowing. Cover saving, borrowing and investment.
• Describing the sector without saying who gains and what the limits are, when the command word is evaluate.

Official syllabus

OCR, Cambridge OCR Level 1/Level 2 GCSE (9-1) in Economics (J205), Version 2.0 (June 2026), first assessment 2019: topics 2.7 and 2.8.