Final answer:
The countries with the largest service sector employment by percentage of GDP vary, but developed economies like the US have a higher percentage compared to less developed countries.
Step-by-step explanation:
The countries with the largest service sector employment by percentage of GDP, ranked from highest to lowest, can vary depending on the specific data and time period analyzed. However, it is generally observed that developed economies, such as the United States, have a higher percentage of service sector employment compared to less developed countries.
For example, in the United States, services make up over 60 percent of the production side components of GDP. The largest service industries in the US include healthcare, education, and legal and financial services.
Other developed countries, such as Canada, also have a significant percentage of service sector employment. In Canada, the service sector employs about three-quarters of all Canadians and generates over 60 percent of the GDP.