0455 · 3.3Workers
Cambridge IGCSE Economics (0455) · Topic 3, Microeconomic decision-makers · 16:32
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In this video
- 0:00Occupation choices and labour markets. Explains wage and non-wage occupation choices, then introduces labour demand, supply and equilibrium wages.
- 2:52Labour demand and supply shifts. Shows how changes in product demand, productivity and worker availability shift labour market equilibrium.
- 4:57Trade unions and minimum wages. Explains collective bargaining, industrial action and how a minimum wage above equilibrium creates unemployment.
- 7:55Why wages differ. Examines how skills, demand, bargaining power, sectors, discrimination and employer type affect wages.
- 10:53Labour mobility. Explains occupational and geographical mobility, its barriers, benefits and costs for workers and employers.
- 12:26Division of labour and exam skills. Explains specialisation's advantages and disadvantages, then reviews labour market analysis and exam-answer techniques.
Transcript: Workers
Occupation choices and labour markets
0:00Imagine choosing between a well paid job with unpredictable hours and a lower paid position offering security and useful training. The best choice is not necessarily the one with the highest wage. Meanwhile, employers must decide how many people to hire. These decisions connect occupation choices, wage differences, labour mobility and the organisation of work. Labour is the human effort, both physical and mental, used in production. The wage is the reward paid for this factor of production.
0:27In a labour market, workers supply their effort and employers demand it. This reverses the roles in a product market, where households are the buyers. An individual’s choice of occupation depends on wage and non-wage factors. Wage factors cover basic pay, overtime payments, bonuses and commission. Overtime provides additional earnings for extra hours, while a bonus rewards performance or meeting a target. Commission links payment to sales, so someone choosing this arrangement must consider how uncertain their earnings could be.
0:57Non-wage factors include job security, working conditions, holidays, promotion opportunities, training, fringe benefits, location and job satisfaction. Fringe benefits are rewards provided in addition to money pay, such as an employer’s health insurance. A nearby workplace reduces travelling time and expense. Someone with family responsibilities may therefore prefer a convenient location even when another employer offers higher wages. Consider a person choosing between restaurant work and an apprenticeship repairing electrical equipment.
1:28The restaurant might offer higher immediate earnings, but the apprenticeship provides qualifications that improve future opportunities. Personal interests also matter because enjoyable work can make demanding tasks more rewarding. Occupation choices therefore reflect present earnings, future prospects and the conditions under which someone will work. The demand for labour is the number of workers employers are willing and able to hire at each wage rate. On the other side of the market, the supply of labour comes from people who are willing and able to work at those rates.
1:59Our vertical axis shows the wage rate, and the horizontal axis measures the quantity of labour. Point A marks their intersection, where the quantities demanded and supplied are equal. This intersection gives the equilibrium wage, where there is no shortage or surplus of labour. Below it, employers want more workers than are available at that rate. Competition to recruit staff puts upward pressure on pay. Above equilibrium, more people seek work than employers want to hire, which creates downward pressure on wages.
2:28The demand curve slopes downwards because, other things equal, higher wages increase the cost of employing workers. Firms then hire fewer people or replace some tasks with machinery. Across an occupation, higher pay generally attracts more applicants, so the supply curve slopes upwards. These curves describe a particular labour market, such as electricians in a town, rather than every worker together.
Labour demand and supply shifts
2:52Demand for labour is derived demand because it comes from consumers wanting the goods and services workers produce. A café employs staff because customers want meals and drinks. If customer demand increases, additional employees can help serve more people. Labour demand therefore increases because employers expect additional production to bring in more revenue. On this graph, demand for labour increases, so the curve shifts right from D one to D two.
3:17At the original wage, employers now want more staff than are available. Recruitment competition pushes wages upwards, so the supply of labour extends along S. Equilibrium moves from point A to point B, and both the wage rate and employment rise. Higher worker productivity can also increase labour demand. Productivity is output per unit of input, such as output per worker per hour. If training enables employees to produce more saleable output, employing them becomes more valuable to the firm.
3:46However, machinery that replaces their tasks can reduce demand for that particular occupation instead. Changes in the supply of labour have a different starting point. More qualified applicants, immigration or an occupation becoming more attractive can increase supply. Lengthy training, expensive qualifications or difficult working conditions can limit the number available. Retirement and emigration may reduce supply, especially where replacing experienced workers takes considerable time. Here, an increase in the supply of labour shifts the curve right from S one to S two, while D stays unchanged.
4:20Competition among applicants pushes the wage down, so demand for labour extends until employers hire the larger number available. The new equilibrium at point B has lower pay and higher employment than point A. A decrease in supply reverses this outcome. When demand for labour decreases instead, the equilibrium wage and employment both fall. Keep a change in the wage rate separate from shifts caused by other conditions. A higher wage causes an extension of labour supply along its unchanged curve.
4:48At the same time, labour demand contracts along its own curve. Additional qualified applicants instead cause an increase in supply, so the whole curve shifts rightwards.
Trade unions and minimum wages
4:57Actual wages also reflect negotiation and rules, not just market forces. A trade union is an organisation of workers that protects and improves its members’ pay and conditions. Collective bargaining is negotiation between employers and workers’ representatives over pay and working conditions. Negotiating together can strengthen employees because replacing an entire workforce is harder than replacing one person. Relative bargaining power is the negotiating strength of one side compared with the other.
5:26A union is stronger when membership is high and its members possess scarce skills. Strong demand for the employer’s products can also make interrupted production especially costly. Employers gain strength when replacement staff are readily available or when weak sales leave little money for higher pay. Industrial action involves workers taking collective measures to put pressure on employers. A strike is a withdrawal of labour, while working to rule means following contractual duties strictly.
5:52These actions can disrupt production and encourage negotiation, but participants may lose earnings. Wage demands can also threaten employment if employers cannot afford the resulting labour costs. Government policy influences wages through employment rules, training provision and public sector pay decisions. A national minimum wage is the lowest wage per hour that employers are legally allowed to pay their workers. It sets a wage floor rather than a maximum payment.
6:17Employers can pay more, but covered workers must receive at least the legal rate. For example, suppose equilibrium is point A, at eight dollars per hour with sixty workers employed. The government sets a national minimum wage of eleven dollars per hour. At this rate, employers demand only forty-five workers at point B, while eighty-five people are willing and able to work at point C. First, read employment from the demand curve, because employers decide how many people they will hire.
6:46Employment is therefore forty-five workers, not eighty-five. Next, subtract forty-five from eighty-five to find a surplus of forty workers. This surplus of labour is unemployment, because these people are willing and able to work at the legal wage but cannot find jobs. Compared with point A, demand for labour contracts along D, so employment falls from sixty to forty-five workers. Meanwhile, the higher wage attracts more applicants, and supply extends along S from sixty to eighty-five.
7:14The surplus of forty is therefore fifteen lost jobs plus twenty-five new job seekers. This unemployment arises only because the legal minimum is set above the equilibrium wage. A floor below eight dollars would change nothing, because the market wage already satisfies the law. For workers who keep their jobs, a national minimum wage raises pay, which can improve living standards and reduce wage inequality. Better pay may also encourage effort and reduce staff turnover, so recruitment costs fall.
7:43Against these benefits, employers face higher costs and may reduce hiring, shorten hours or raise prices. Effective enforcement matters because a legal entitlement provides little protection when employers ignore it.
Why wages differ
7:55Reasons for differences in wages include demand for and supply of labour, relative bargaining strengths, discrimination and government policy. Skills and qualifications affect both sides of the market. Employers may strongly demand specialist abilities, while lengthy training restricts the number of suitable applicants. That combination helps explain why some highly skilled occupations receive relatively high wages. Skill alone does not guarantee high pay, because the demand for that particular service also matters.
8:23An excellent specialist may earn less if few employers need their expertise. Meanwhile, a job requiring limited formal qualifications can pay more when conditions discourage applicants. Dangerous work, remote locations or unsocial hours may require additional pay to attract enough suitable people. Relative bargaining strength matters too, because members of a strong trade union can often win higher pay than similar workers without one. The economic sector workers operate in also affects their wages.
8:52The primary sector extracts natural resources, such as crops, fish and minerals. Manufacturing and construction form the secondary sector, while services such as nursing form the tertiary one. Many farm labouring jobs need few qualifications, so the supply of labour is large and wages tend to be low. However, pay varies widely inside every sector because skills and demand differ between jobs. For example, a mining engineer in the primary sector usually earns more than a shop assistant, because engineering skills are scarce and highly sought.
9:23A manufacturing technician’s pay depends partly on demand for the products being made, since labour demand is derived demand. Service workers range from cleaners to specialist surgeons, with very different qualification requirements. Compare specific occupations through demand, supply and bargaining strength rather than by sector alone. Discrimination is unequal treatment based on characteristics unrelated to a person’s ability to do the job. An employer might offer a woman less than an equally productive man doing comparable work.
9:52Restricted access to training or promotion can also reduce future earnings. However, an observed average wage difference alone does not establish its cause because hours, experience and occupations may differ. Equal pay and anti-discrimination laws can reduce unjustified differences if they are enforced effectively. Public sector organisations are owned or controlled by government, whereas private firms belong to individuals and shareholders. Wages of government employees often reflect official pay scales, public budgets and negotiations.
10:23In private employment, market competition, profitability and bargaining arrangements influence the employer’s ability and willingness to pay. Neither type of employer always pays more. A private hospital might offer higher wages to recruit scarce nurses, while public employment could provide stronger security or pension benefits. Government spending decisions may raise public salaries or constrain increases. Comparisons should therefore consider total rewards, the occupation and its labour market rather than ownership alone.
Labour mobility
10:53Mobility of labour describes how easily workers can change occupation or location. Occupational mobility is the ability of workers to change from one type of job to another. Transferable skills, affordable training and recognised qualifications make this easier. A worker with narrow skills may struggle to enter another occupation, especially when courses are expensive or require years of study. Moving to a job in another area depends on geographical mobility, which is the ability of workers to relocate for work.
11:23Affordable housing, better transport and reliable vacancy information can increase it. Family ties, language barriers, immigration restrictions and high moving costs make relocation harder. Even when a distant job pays more, someone may be unable to afford accommodation before receiving their first salary. Greater mobility helps workers move towards vacancies and employers recruit suitable staff. Labour shortages can ease, while unemployment falls where people previously lacked access to available jobs.
11:52Moving into expanding occupations can improve earnings and job satisfaction. For example, retraining workers to install renewable energy equipment supports employment alongside environmental sustainability. Changes in mobility also bring costs. Areas losing skilled employees may face recruitment problems, while receiving communities experience additional pressure on housing and services. Moving or retraining can disrupt families and require substantial expenditure. When mobility decreases, vacancies and unemployment can exist together because suitable workers cannot reach the jobs or meet their requirements.
Division of labour and exam skills
12:26Division of labour is the specialisation of workers in particular tasks within the production process. In this clothing workshop, one person cuts fabric, another stitches pieces, and a third checks finished shirts. Each concentrates on a stage rather than making the entire product. Repetition builds expertise, and less time is lost switching between tools or activities. Each worker becomes skilled at one task, so productivity rises. Training is also quicker because each employee learns only a narrow range of tasks.
12:56The unit cost is the average cost of producing one item, and greater output from the same resources lowers it. Specialised equipment may further improve speed and accuracy. These gains can help firms offer competitive prices, although higher productivity does not automatically produce higher wages. The disadvantages of division of labour follow from the same narrow focus. Repetitive tasks can create boredom, which may reduce motivation and increase mistakes. Limited experience makes employees less flexible when another task needs doing.
13:26Production also becomes dependent on each stage, so a missing component or an absent specialist can delay everyone further along the process. Narrow specialisation also raises the risk of structural unemployment. This is unemployment caused by long-term changes in an industry or its technology, so workers’ skills no longer match the available jobs. If machinery replaces a particular task, someone trained only for that activity may struggle to find alternative work.
13:53Broader training and opportunities to rotate between tasks can reduce this vulnerability. These measures connect the organisation of production with occupational mobility. Examiners often see the two sides of the labour market swapped, so remember that employers demand labour and workers supply it. A change in the wage rate itself causes an extension or contraction along the curves, while any other cause shifts a curve. Begin by identifying whose decision has changed and why.
14:20A complete explanation of a wage difference connects the worker’s skills with demand, availability, bargaining strength and relevant government rules. In a multiple-choice question, first check whether the wage floor is above or below the equilibrium wage. At a floor above equilibrium, the employed quantity is read from the demand curve at the legal rate. In structured questions, define asks for a precise meaning and state asks you to express a point in clear terms.
14:45An explain answer sets out the reasons why or how an outcome occurs. To analyse, examine the relationships in detail by linking the cause to each economic effect in turn. For example, more training increases the number of qualified applicants. The supply of labour increases, so the curve shifts right. With D unchanged, the equilibrium wage falls and employment rises as demand for labour extends. A discuss answer writes about the issue in depth in a structured way, with both sides and a justified conclusion.
15:14A typical exam task asks you to discuss whether introducing a national minimum wage will benefit workers. A minimum wage set above equilibrium raises hourly pay for workers who keep their jobs. Higher income can improve their ability to afford essential goods and services. Better rewards may also increase motivation and encourage employers to retain experienced staff. Against this, a wage floor above equilibrium raises firms’ labour costs, so the demand for labour contracts.
15:41Some workers lose their jobs or receive fewer paid hours, which reduces income. On balance, a national minimum wage usually benefits workers when it is set only slightly above equilibrium and enforced. This is because the pay rise for most workers then outweighs a small fall in employment. A floor far above equilibrium creates a large surplus of labour, so many more workers could lose out. Workers choose occupations by comparing money rewards with security, conditions, interests and future opportunities.
16:11Wages emerge from labour demand and supply, but bargaining and government policy also shape the outcome. Differences between occupations reflect skills, scarcity, employer demand and sometimes discrimination. Mobility helps people reach suitable opportunities, while division of labour raises efficiency at the cost of narrower tasks and greater dependence.