Influences on the Size and Composition of the Labour Force | 影响劳动力规模与构成的因素

📚 Influences on the Size and Composition of the Labour Force | 影响劳动力规模与构成的因素

The labour force consists of all individuals of working age who are either in employment or actively seeking work. Understanding the factors that determine its size and composition is central to analysing an economy's productive capacity, potential output and long‑term growth prospects. Changes in the supply of labour can arise from demographic trends, migration flows, social norms, government policies and technological shifts, all of which alter not only how many people are available for work but also the skills, age and gender profile of the workforce.

劳动力由所有处于工作年龄、已经就业或正在积极寻找工作的人构成。理解决定劳动力规模与构成的因素，是分析一个经济体的生产能力、潜在产出和长期增长前景的核心。劳动力供给的变化可能源于人口趋势、移民流动、社会规范、政府政策和技术变革，所有这些因素不仅改变可投入工作的人数，也改变劳动力的技能、年龄和性别分布。

1. Demographic Foundations: Population Size and Growth | 人口基础：人口规模与增长

The absolute size of a country’s labour force is fundamentally underpinned by the total population. A larger population provides a wider pool of potential workers, ceteris paribus. The natural rate of population change – the difference between the birth rate and the death rate – determines the number of individuals entering the working‑age bracket each year. Sustained high birth rates, with a time lag, expand the future labour force, while persistently low birth rates tend to shrink it over time.

一国劳动力绝对规模从根本上取决于总人口。假定其他条件不变，人口越多，潜在劳动力池就越大。人口自然增长率——出生率与死亡率之差——决定了每年进入劳动年龄区间的人数。持续的高出生率经过一段时滞后会扩大未来的劳动力队伍，而持续的低出生率则会逐渐使其萎缩。

Countries with ageing populations, such as Japan and Italy, are experiencing a decline in the working‑age population, which places upward pressure on wages and can constrain economic growth. Conversely, many developing economies benefit from a ‘demographic dividend’ when a large share of the population is of working age, boosting potential output as long as suitable jobs are available.

日本和意大利等人口老龄化的国家，正在经历劳动年龄人口的减少，这给工资带来上行压力，并可能制约经济增长。相反，许多发展中经济体受益于“人口红利”——当劳动年龄人口占比很大时，只要存在适当的就业机会，就会推动潜在产出上升。

2. Net Migration and Labour Supply | 净移民与劳动力供给

Net migration – the difference between immigration and emigration – is one of the most potent short‑ and medium‑term influences on the size of the labour force. Inward migration can rapidly increase the supply of workers, particularly in sectors facing labour shortages, and often brings a younger demographic profile that helps slow the ageing of the domestic workforce. For the UK, EU enlargement in 2004 led to a notable inflow of workers from Eastern Europe, expanding the labour force and filling vacancies in agriculture, construction and hospitality.

净移民——移入与移出之差——是劳动力规模在短期和中期内最有力的影响因素之一。外来移民可以迅速增加工人供给，尤其是在面临劳动力短缺的行业，并且往往带来更年轻的人口结构，有助于减缓国内劳动力的老龄化。就英国而言，2004年欧盟东扩导致大批东欧工人流入，扩大了劳动力队伍，填补了农业、建筑业和酒店业的空缺。

Emigration, on the other hand, can drain an economy of both numbers and skills. The ‘brain drain’ phenomenon sees highly educated workers leave their home country for better opportunities abroad, reducing the domestic labour force’s skill composition and potential productivity. Remittance inflows may partly offset the loss, but the immediate effect on labour supply is negative.

另一方面，人口外流既会削弱劳动力人数，也会带走技能。“人才外流”现象指受过高等教育的劳动者为寻求海外更好机会而离开母国，从而降低国内劳动力的技能构成和潜在生产率。侨汇流入可能在某种程度上弥补损失，但对劳动力供给的直接效应是负面的。

3. Labour Force Participation Rate: The Decision to Work | 劳动参与率：参与工作的决策

Beyond the size of the working‑age population, the actual labour force is determined by the participation rate – the proportion of working‑age people who are economically active. This rate is influenced by a range of microeconomic and institutional factors, including wages, non‑labour income, household responsibilities and cultural attitudes towards work. An increase in the participation rate can expand the effective labour supply without any change in population.

除了劳动年龄人口的规模之外，实际劳动力的多少还取决于劳动参与率——即劳动年龄人口中从事经济活动人口的比例。这一比率受到一系列微观和制度因素的影响，包括工资水平、非劳动收入、家庭责任以及对工作的文化态度。劳动参与率的上升可以在人口不发生变化的情况下扩大有效劳动力供给。

The participation rate often varies across different groups. It tends to be lower among the young, who may be in full‑time education, and among older workers, who may choose early retirement. Governments can influence participation through policies such as raising the school‑leaving age, changing pension eligibility or reforming the tax and benefit system to make work financially more attractive.

劳动参与率在不同群体中往往存在差异。年轻群体可能因接受全日制教育而参与率较低，年长劳动者可能选择提前退休而较低。政府可以通过提高离校年龄、调整养老金领取资格或改革税收与福利体系来影响参与率，使参与工作在经济上更有吸引力。

4. Age Structure and the Dependency Ratio | 年龄结构与抚养比

The age composition of the population directly affects the relative size of the labour force through the dependency ratio – the ratio of dependants (those under 15 and over 64) to the working‑age population (typically 15–64). A high youth dependency ratio means a large number of children must be supported by current workers, which can constrain female participation if childcare responsibilities fall disproportionately on women. A high old‑age dependency ratio signals rising pressure on pensions, healthcare and the tax burden on the workforce.

人口的年龄构成通过抚养比直接影响劳动力的相对规模——抚养比是指被抚养人口（15岁以下和64岁以上）与劳动年龄人口（通常为15-64岁）的比率。较高的少儿抚养比意味着现有劳动者需要抚养大量儿童，如果育儿责任主要由女性承担，这会制约女性的劳动参与。较高的老年抚养比则预示着养老金、医疗和劳动者税负压力将日益上升。

Economies in the later stages of the demographic transition, with falling birth rates and longer life expectancy, face a shrinking base of young entrants to the labour force. This trend can be partially mitigated by extending working lives, encouraging higher participation among older workers and attracting young immigrants.

处于人口转变后期阶段的经济体，出生率下降、预期寿命延长，面临进入劳动力市场的年轻人数不断萎缩的趋势。延长工作年限、鼓励老年人提高参与率以及吸引年轻移民，可以在一定程度上缓解这一趋势。

5. Retirement Age and Pension Policies | 退休年龄与养老金政策

The age at which individuals become eligible for state or occupational pensions is a powerful policy lever affecting the size of the labour force. Raising the state pension age, as the UK has been doing gradually for both men and women, increases the labour force participation of older workers and reduces the old‑age dependency ratio. It also helps ease fiscal pressure on publicly funded pension systems.

个人达到领取国家或职业养老金资格的年龄，是影响劳动力规模的一项强有力的政策杠杆。像英国这样逐步提高男女领取国家养老金的年龄，可以提高年长劳动者的劳动参与率，降低老年抚养比，同时有助于缓解公共养老金体系的财政压力。

However, the effectiveness of this measure depends on the health status and employability of older workers. In physically demanding occupations, many may be unable to extend their working lives without vocational retraining or workplace adaptations. Where age discrimination persists, older individuals who wish to remain in work may find it difficult to secure employment.

然而，这一措施的有效性取决于年长劳动者的健康状况和就业能力。在体力要求较高的职业中，若没有职业再培训或工作场所的适应性调整，许多人可能无法延长工作年限。在年龄歧视依然存在的地方，希望继续工作的年长人士可能难以找到就业机会。

6. Female Labour Force Participation | 女性劳动参与

One of the most significant compositional shifts in advanced economies over the past half‑century has been the steady rise in female labour force participation. Factors driving this trend include changing social norms, better access to higher education, improved contraceptive technology, the growth of the service sector and family‑friendly policies such as subsidised childcare and parental leave.

过去半个世纪发达经济体中最显著的劳动力构成变化之一，是女性劳动参与率的稳步上升。推动这一趋势的因素包括社会规范的改变、高等教育普及程度提高、避孕技术进步、服务业增长以及补贴托儿服务和育儿假等家庭友好政策。

Higher female participation not only enlarges the overall labour force but can also alter its composition by increasing the supply of skilled labour in fields where women are strongly represented, such as education, healthcare and professional services. Nonetheless, persistent gender pay gaps and occupational segregation indicate that full economic integration is still incomplete, and further gains in participation remain possible.

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女性参与率提高不仅扩大了整体劳动力规模，还可能通过增加女性占比较高的领域（如教育、医疗和专业服务）的技能劳动力供给，改变劳动力的构成。然而，持续的性别薪酬差距和职业隔离表明，全面的经济融合仍未完成，参与率仍有进一步提升的空间。

7. Education, Training and the Skill Composition | 教育、培训与技能构成

The composition of the labour force is profoundly shaped by the stock of human capital – the knowledge, skills and competencies embodied in workers. Investment in education and vocational training raises the quality of labour and shifts the composition towards higher‑skilled occupations. A well‑educated workforce can adapt more readily to technological change and is more likely to engage in innovation‑driven sectors, raising long‑run productivity.

劳动力的构成深受人力资本存量——劳动者身上蕴含的知识、技能和能力——的影响。教育和职业培训投资可以提高劳动力质量，使劳动力构成向高技能职业倾斜。受过良好教育的劳动力队伍更容易适应技术变革，更有可能进入创新驱动型行业，从而提高长期生产率。

However, mismatches between the skills produced by the education system and the demands of employers can lead to structural unemployment and vacancies that coexist with joblessness. The growing emphasis on STEM (science, technology, engineering and mathematics) subjects and digital literacy reflects an attempt to align the composition of labour supply with the evolving demands of the modern economy.

然而，教育体系所培养的技能与雇主需求之间的错配，可能导致结构性失业，即空缺岗位与失业并存。对STEM（科学、技术、工程和数学）学科以及数字素养的日益重视，反映了使劳动力供给构成与现代经济不断变化的需求相匹配的努力。

8. Sectoral Shifts and Industrial Composition | 产业部门转移与行业构成

The distribution of workers across primary, secondary and tertiary sectors changes as an economy develops. Deindustrialisation in many high‑income countries has reduced the share of employment in manufacturing, while the service sector has expanded to account for the bulk of the labour force. This shift alters the required skill composition: demand for manual, routine skills may decline, while interpersonal, analytical and digital skills become more valued.

随着经济发展，劳动者在第一、第二和第三产业之间的分布会发生变化。许多高收入国家的去工业化降低了制造业的就业份额，而服务业已扩展至吸纳了大部分劳动力。这一转型改变了所需的技能构成：对体力、常规性技能的需求可能下降，而人际沟通、分析能力和数字技能则变得更加受重视。

In emerging economies, the movement of labour from agriculture to manufacturing can provide a significant boost to productivity, as workers move from low‑productivity subsistence farming into higher‑productivity factory jobs. This structural transformation is a hallmark of economic development and fundamentally reconfigures the labour force’s sectoral composition.

在新兴经济体中，劳动力从农业向制造业的转移可以极大地提高生产率，因为劳动者从低生产率的自给性农业转向生产率更高的工厂岗位。这种结构转型是经济发展的标志，根本上重塑了劳动力的行业构成。

9. Immigration Policy and the Skill Mix | 移民政策与技能结构

Government immigration policy directly shapes the composition of the labour force by controlling both the volume and the characteristics of incoming workers. Points‑based systems, such as those used in Australia and, since Brexit, in the UK, prioritise migrants with specific skills, qualifications or language proficiency, thus tilting the skill composition of the labour force towards higher levels. By contrast, reliance on temporary low‑skilled migration programmes tends to expand the lower end of the skill distribution.

政府的移民政策通过控制入境劳动者的数量和特征，直接影响劳动力构成。澳大利亚以及脱欧后的英国所采用的积分制系统，优先考虑具有特定技能、资质或语言能力的移民，从而将劳动力的技能构成向更高水平倾斜。相反，依赖临时性低技能移民计划则往往会扩大技能分布的低端。

Selective immigration can help plug acute skill shortages in sectors such as healthcare, information technology and engineering, raising the economy’s productive potential. However, it may also provoke social tensions if the benefits and costs are perceived to be unevenly distributed across regions and income groups.

选择性移民有助于填补医疗保健、信息技术和工程等领域的严重技能短缺，提升经济体的生产潜力。然而，如果人们认为移民的收益和成本在不同地区和收入群体间分配不均，这也可能引发社会紧张。

10. Technological Change and Labour Demand Patterns | 技术变革与劳动力需求模式

Technological progress does not simply alter the size of the labour force; it fundamentally reshapes its composition by changing the relative demand for different types of labour. Automation and artificial intelligence tend to substitute for routine cognitive and manual tasks, reducing demand for mid‑skill workers while increasing demand for high‑skill analytical and low‑skill manual (non‑routine) jobs – a phenomenon known as job polarisation.

技术进步并不是简单地改变劳动力规模，而是通过改变对不同类型劳动力的相对需求，从根本上重塑其构成。自动化和人工智能倾向于替代常规认知和体力型任务，减少对中等技能工人的需求，同时增加对高技能分析性工作和低技能非重复性体力工作的需求——这一现象被称为就业两极化。

For the labour force, this means that the composition of skills must continuously adapt. Lifelong learning, retraining and upskilling become essential to maintain employability. Workers unable to adjust face a high risk of long‑term unemployment or being forced into lower‑paid, less secure employment, widening income inequality within the labour force.

对劳动力而言，这意味着技能构成必须不断调整。终身学习、再培训和技能提升对于保持就业能力变得至关重要。无法适应的劳动者面临长期失业或被迫转向薪酬更低、更不稳定的就业岗位的较高风险，从而拉大劳动力内部的收入不平等。

11. Government Policy and Welfare Incentives | 政府政策与福利激励

Fiscal and welfare policies can have powerful, if sometimes unintended, effects on the size and composition of the labour force. High marginal effective tax rates, created by the interaction of income tax and means‑tested benefit withdrawal, can create an ‘unemployment trap’ or ‘poverty trap’ that reduces the incentive to enter or stay in work, especially for second earners in low‑income households.

财政与福利政策可能对劳动力规模和构成产生重大（有时是意想不到的）影响。所得税与基于家庭经济状况的调查式福利退出机制相互作用所产生的高边际有效税率，可能形成“失业陷阱”或“贫困陷阱”，削弱进入或留在工作岗位上的激励，尤其对低收入家庭中的次要收入者而言。

Conversely, in‑work benefits such as the Working Tax Credit in the UK (replaced by Universal Credit) and earned income tax credits in the US are designed to boost labour force participation and reward work for low‑paid workers. Well‑designed policies can therefore increase the effective supply of labour, particularly among groups with historically low participation rates.

反之，像英国的就业税收抵免（现已被统一福利金取代）和美国的劳动所得税抵免等在职福利，旨在促进劳动参与并奖励低薪劳动者的工作。因此，设计得当的政策可以增加有效劳动力供给，尤其是在历史上参与率较低的群体当中。

Regulations governing working hours, minimum wages and employment protection can also affect composition. A very high minimum wage may encourage some firms to substitute capital for low‑skilled labour, while flexible labour markets can attract entrants who need to combine work with care responsibilities, thereby altering the gender and age profile of the workforce.

有关工作时间、最低工资和就业保护的法规也会影响劳动力构成。过高的最低工资可能促使某些企业用资本替代低技能劳动力，而灵活的劳动力市场则可以吸引那些需要兼顾工作与照料责任的劳动者，从而改变劳动力的性别和年龄结构。

12. Conclusion: Interplay of Influences | 结语：影响因素的相互作用

The size and composition of the labour force are not determined by any single factor; they emerge from the complex interplay of demographic trends, migration patterns, institutional incentives, social change and technological forces. A government seeking to boost long‑run economic growth must therefore adopt a holistic approach, combining education and skills policy, sensible immigration rules, pension reform and a tax‑benefit system that rewards participation.

劳动力的规模与构成并非由任何单一因素决定，而是由人口趋势、移民模式、制度激励、社会变迁和技术力量之间复杂的相互作用形成的。因此，寻求推动长期经济增长的政府必须采取整体性策略，将教育与技能政策、合理的移民规则、养老金改革以及奖励参与的税收福利体系结合起来。

For A‑Level students of economics, analysing these influences provides a powerful lens through which to evaluate real‑world policy debates, from immigration caps and the raising of state pension ages to the funding of vocational training and the design of welfare systems. Recognising that labour is not a homogenous commodity is essential for understanding how economies grow and how the benefits of growth are distributed across different groups in society.

对于学习A‑Level经济学的学生来说，分析这些影响因素提供了一个强有力的视角，用以评价从移民数量上限、提高国家养老金年龄到职业培训拨款和福利体系设计等现实政策讨论。认识到劳动力并非同质商品，对于理解经济如何增长以及增长的收益如何在社会的不同群体之间分配至关重要。

Published by TutorHao | Economics Revision Series | aleveler.com

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