If most workers in a country are employed in the tertiary (services) and quaternary (knowledge-based services, such as information technology, research, and development) sectors, it generally suggests that the country has a high level of economic development.
This is because:
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Shift from Agriculture: Economies tend to move away from primary sectors (agriculture and raw materials) towards more developed tertiary and quaternary sectors as they progress. A predominance of workers in these sectors typically indicates that the country has undergone significant industrialization and has transitioned to a service-oriented economy.
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Higher Value-Added Activities: The tertiary and quaternary sectors usually involve higher value-added activities compared to primary and secondary sectors. These sectors often provide better wages, increased innovation, and higher productivity.
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Infrastructure and Education: A strong concentration in these sectors typically necessitates a well-developed infrastructure and a more educated workforce. Countries with advanced service and knowledge economies often invest significantly in education and training.
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Economic Diversification: Having a large workforce in these sectors often indicates economic diversification, which can make the economy more resilient to external shocks.
Overall, a high employment share in the tertiary and quaternary sectors is indicative of a mature, developed economy that is likely characterized by a high standard of living, technological advancement, and a focus on services and knowledge-based industries.