To have a job is one of the most essential obligations of our lives. However, it is rather controversial to discuss whether teenagers should have jobs. Some might say that it's too early for them to work while they have to study, but I strongly believe that it'll be a helpful experience to them.
First of all, they come to know better of the importance of money. Teenagers nowadays seem not to know the significance of money well. When their parents give them some allowance to use, they tend to waste it easily. For example, when I was an elementary school student, my father gave me a great deal of money. Even though he said to use it usefully, I spend it for playing in arcade and buying some snacks. My father was annoyed and made me work in his office for one day. After the day of work, I finally realized how hard he have earned money.
Moreover, they can learn some hardships of life while working. Teenagers yet don't know how tough the life is. They think that they can do whatever they want, but life is not that easy. I went to countryside to see my uncle last year. He was working hard in the field, and I thought that farming is not arduous and tried to help him. But, for sure, I exhausted when I worked for only 30 minutes.
I've learned from the task that I should abandon my behavior to live my life easily.
In conclusion, teenagers can learn from working the uneasiness of earning money and life, though they're still young to have firm occupations. I believe that earlier they learn those lessons, faster they can adapt to the world.