Dennis Chan, 28, has been working as a full-time a pharmacist for four years.
But in his spare time he's working for himself, building his new small business, a fried chicken food truck called Dirty Bird.
"At the pharmacy I work 38 hours, food truck itself I'm working 26 hours on top, so we're looking at about a good 64 hours in total," says Mr Chan.
While he gets some help from his family, he's doing the bulk of the work himself and has big plans for his business.
"The last time I had a holiday was 2015. I went to America, and since that day I've basically started saving up for the food truck.
"Hopefully when this brand goes quite reputable, a shopfront would definitely be our first expansion and then hopefully we can become a franchise."
It's a trend challenging the myth that Millennials and Gen Ys are lazy and entitled.
NRMA Business Insurance says 27 per cent of them are working more than 50 hours each week and 70 per cent are taking less than two weeks holidays a year.
Of those 55 years and older, 24 per cent are working over 50 hours per week with 49 per cent taking less than two weeks annual leave.
NRMA's Amanda Whiting says the statistics show that young people work hard, especially when they have control of their own destiny.
"If you think about Millennials they're tech savvy, they're purpose lead, and they're really passionate about what they do and that is making them really optimistic about their future and a small business that they can really own."
That passion is paying off for some young small business owners.
For Dirty Bird's Dennis Chan a turning point for his business was when international celebrity Katy Perry visited his truck in Sydney recently.
"It was absolutely insane, we were making burgers and Katy Perry popped out of nowhere and ordered a burger and the next thing you know, she ordered another seven chicken burgers for her own entourage."
