How many hours should one work per day?
Doing our jobs effectively helps an economy to grow. How much hours in a day should one work? Too many hours takes a lot of time from your personal life - you live for your job. Unfortunately it's exhausting so eventually you'll get tired mentally, which influence your effectiveness. Few hours could possibly hurt the economy (when implemented on whole society) and the company that you work in. But this way, the job is only part of your life, that helps you enjoy it.
How many hours make the balance?