1. 2. Changes in employment structures over time
The relative importance of the primary, secondary and tertiary sectors in countries at different levels of development; change over time and space.

2. Line graph to show the UK employment structure from 1800 – 2000
The Clark Fisher model
Line graph to show the UK employment structure from 1800 – 2000

3. Key term

4. The sectors change with time over three phases as the Clark-Fisher model shows:
The pre-industrial phase- the primary sector leads the economy and may employ more than two-thirds of the working population. Agriculture is the most important activity.
The industrial phase- the secondary and tertiary sectors increase in importance. The primary sector declines.
The post-industrial phase- As the tertiary sector becomes the most important sector, the secondary sector declines and the primary sector employs a small percentage of the active population.

5. In an LIC, such as Mali, a high proportion of the active population works in primary industries, especially in farming. This type of country is in the pre-industrial phase.
China is an NIC and has a strong manufacturing sector. It is in the industrial phase.
HICs, such as Germany, are in the post-industrial phase.

6. Using page 156-157 Geography A Foundations
How do employment patterns change over time?

7. Key term

9. Skills practice