Growing up I knew a lot of families whose children worked in their restaurants. While — kids being kids — I'm sure that they would have told you that they were miserable, I don't think that they actually were.
Honestly, is a kid who must work any more miserable than an adult who must work? The entire idea of childhood is a very recent invention, after all.
>> is a kid who must work any more miserable than an adult who must work?
Yes, if that working deprives them of an education. Or if they work in conditions that an adult would not tolerate. Or if their pay is paid to someone else (ie parents renting out children). Or if their status as "children" or "wards" of their employers results in them having fewer rights than adults in the same employ.
Honestly, is a kid who must work any more miserable than an adult who must work? The entire idea of childhood is a very recent invention, after all.