Final answer:
Japan has the highest average hours worked per worker among the given countries.
Step-by-step explanation:
The country that represents the highest average hours worked per worker among the given options is Japan. According to the provided table, Americans work a great deal, but Japan has the highest average hours worked per year compared to Germany, France, and South Korea. The data from 2013 shows that the difference in the number of hours worked between Japan and other countries can amount to roughly six to seven weeks less of work per year for workers in Germany or France.