Final answer:
South Korea represents the highest average hours worked per worker.
Step-by-step explanation:
In terms of average hours worked per worker, the country that represents the highest average is South Korea. According to data from the Organization for Economic Co-Operation and Development (OECD), South Koreans work an average of approximately 2,069 hours per year. This is significantly higher than the average hours worked in the United States, Germany, and Japan.