In some countries, an average employee is legally obliged to retire at the age of, say 55 or 60, while in others, like Japan, people can work until they are physically and mentally fit to perform duties. What is the system prevailing in your country? Until what age should people be allowed to continue in salaried jobs? Give reasons for your answer and include any relevant examples from your own knowledge or experience. You should write at least 250 words.