Final answer:
The service-producing sector in the United States employs roughly 80% of the workforce, reflecting a postindustrial service economy and making up over 60% of GDP on the production side.
Step-by-step explanation:
The service-producing sector employs a significant portion of the working population in developed countries. In the United States, around 80 percent of the workforce is employed in the tertiary sector, also known as the service sector. This sector includes industries such as finance, education, healthcare, retail, and information technology. The rise of the information age and the postindustrial service economy have contributed to this significant employment figure, which reflects the country's shift away from agriculture and manufacturing-centered economy. While the service sector makes up over 60 percent of the GDP on the production side, the employment rate is even higher, demonstrating the critical role of service industries in providing jobs to the majority of Americans.