A-level经济学在第五章当中有对宏观经济测量给出了详细的解析，下面总结了其中重要的概念。
Labour force 劳动力
Labour force is the total number of workers who are available for work.
劳动力是指可参与工作的人数总和。
Labour force participation rate 劳动参与率
The labour force participation rate refers to the percentage of the total population of working age who are actually classified as being part of the labour force.
劳动参与率是指劳动力人口与处于工作年龄的总人数之比。
Dependency ratio 依赖率
The dependency ratio is an age-population ratio of those typically not in the labor force (the dependent part) and those typically in the labor force (the productive part).
依赖率指不构成劳动力的非适龄人口(依赖人口)与构成劳动力的适龄人口(劳动人口)的比值。
Labour productivity 劳动生产率
Labour productivity refers to the quantity of goods and services that a worker is able to produce in a particular period of time.
劳动生产率是指一个劳动者在某段时间内所能够生产的产品或服务的数量。
Level of unemployment 失业水平
The level of unemployment refers to the total number of people who are unemployed.
失业水平指失业人口的总数。
Rate of unemployment 失业率
The rate of unemployment refers to the number of unemployed people divided by the labour force.
失业率指失业人口与劳动力人口的比值。
从A-level宏观经济测量中的主要概念来看，主要围绕劳动这一概念的内容，对这些概念的理解在A-level考试中比较重要。
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