Yup Ausm...
I was babysitting by 12, a floor guard at a skating rink at 15, and working with the veterinarian by the time I was 16.
Maybe it was because my parents didn't have much money, and they were spending what little they had to send my 3 older siblings to college?  And not just any colleges... the very best that my brother and sisters could manage to get in, which generally meant far away and more expensive.