This document discusses employment in the UK. It begins by stating that 31 million people work for pay in the UK, providing goods and services and paying income tax. It then outlines the four sectors of employment: primary (raw materials from land/sea), secondary (manufacturing using primary materials), tertiary (service jobs), and quaternary (high-level specialized skills). The document notes different factors that influence where jobs are located, such as access to raw materials, transportation, workforce, land costs, taxes, and utilities. It poses the question of where different sectors may be located based on these factors.