Nathan Feiglin started out reviewing gadgets on YouTube aged 12.
He registered a digital publishing company aged 14. At 15, he's moving into mobile app development and keeping busy after school ''monetising'' his web content.
''I've got a passion for technology and thought I might as well share it with others,'' the North Bondi student said.
It turns out there are more teen entrepreneurs like Nathan than you might expect.
When Macquarie University sociologist Tobia Fattore surveyed 11,000 young people in NSW aged between 12 and 16 about the work they did, he found one in 40 were creative entrepreneurs.
''Most young people are in low-paid jobs but there's this small creative class of teen workers with extraordinary jobs in areas like web design, desktop publishing, performing arts, teaching, sport, photography and jewellery making,'' he said.
The work being done by this elite cohort can be classified ''high skill'' and many of them have incomes to match. Dr Fatorre's survey showed they earned an average of $48 an hour.
But there was a strong class dimension to teen work. Dr Fattore discovered young people from high-income families were far more likely to be entrepreneurs than those from low-income households, even when they were doing relatively low-skill jobs.
''The ones showing entrepreneurial zeal and initiative are from wealthy areas,'' he said. ''They are the ones who are likely to have start-up capital to put up signs, buy tools and so on.'' Teen entrepreneurs in wealthy suburbs also had the advantage of a local market willing and able to pay for their services.
''People in working class areas are less likely to employ someone to mow the lawn or clean the windows but in wealthy areas there are more people that can do that,'' Dr Fattore said.
Teens in low-income neighbourhoods were more likely to be informal employees and rely on family networks for work.
''In wealthier areas the relationships matter less - it's whoever wants to buy your service,'' Dr Fattore said. ''Working class kids are also more likely to be motivated to do work to help out with household finances.''
The internet has not done much to disrupt the class dynamics of teen employment. The vast majority of very young entrepreneurs live in the wealthiest 25 per cent of households. Dr Fattore said most teen entrepreneurs were driven by their ''interests and passions''.
That describes Nathan, who often spends five hours working on his business after school.
''I'm always speaking to PR firms and company reps to get review products,'' he said.
Nathan accepts sponsorship for blog posts but will not accept payment for his technology reviews.
''That could threaten my editorial integrity,'' he said.
Dr Fattore found the most common formal jobs for those aged between 12 and 16 were in sales (47 per cent), delivery work (14 per cent) and food preparation (8 per cent). He also discovered the gender pay gap starts early. The average pay rate for female teens in the highly paid category was about 70 per cent of the male rate.
Kai Van Lieshout is just 11 but he is a pet-food entrepreneur. For three hours a week, assisted by his two younger brothers, the year 5 student from the Melbourne suburb of Elwood bakes and packages dog biscuits to sell to local cafes. They make 100 biscuits a week, which sell for $2 each. He has been approached by a national pet chain.
For Kai, it has been a bit of a whirlwind. ''If you had asked me a year ago if I thought I'd be running my own dog biscuit company, I would have cracked up,'' he says.
with Caroline Zielinski