Pfft! Child labour. Look, that term only exists in the modern era.
Try calling out 'child labour' in Medieval Europe, Classical Europe or even current India or some African countries. They will instead ask you, "What nonsense are you on?" because if they don't work, they literally don't eat. Americans love saying, "Oh, this isn't right. Children shouldn't work. Go to school." That disconnect with reality doesn't settle the problem.
'Child labour' is a pretty term that westerners use to make them feel good about themselves. But in the reality of children starving because there is no food, nobody cares about child labour. The children themselves would rather go beg for work (such as in Oliver Twist, where street urchins are taught pickpocketing) just so that they can eat.
Have you people felt the pain of going to sleep hungry? Have you had to beg for food? I have, and I'm sure some college kids are still doing it. But these kids have no prospect for themselves, and certainly no food for them.
Yuna is giving them:
1) Opportunity to gain an income, now they don't have to go to sleep hungry anymore
2) Apprenticeship, so that they can later on find work elsewhere
3) Self-respect, in that they can learn a trade and don't have to beg for food anymore
4) A future, because now whether they live or die is entirely dependent on themselves instead of some lord they have never met before
In the middle ages, as soon as you're old enough to carry something, you're expected to help out your family at their trade, such as at the farms. You think this is too young? In the middle ages, children as young as 5 started working at the farm. Even in industrial era England, very young children did hazardous jobs, such as cleaning chimneys, working at the factory, or serving as deck boys or port porters.
http://www.thefinertimes.com/Middle-Ages/children-in-the-middle-ages.html
I am seriously amazed that you guys are calling this child labour, especially when it is for their own survival. Have you never done chores before? Have you never been told to feed your dog when you're supposed to be playing Xbox with your friends? Do your parents hire maid service to clean your homes?
I can understand the few people here who were just joking about it. But the rest of you, have you never been told to do chores?