Daniel Lewis who works with his father at Spring Farm Quarry in NSW, operating heavy machinery, made his Olympic debut at Rio 2016 on 10 August.
The 22-year-old told the Advertiser his 6am to 5.30pm shifts six days a week made it difficult to find time to train.
“When I’m preparing for a competition if I’m working I can’t really train at all,” Lewis was quoted as saying.
“I usually work all day and then crash out when I get home.
“Sometimes if I finish early I’ll do pads or something or go for a jog — or even at work if I have to go somewhere I’ll just jog there with the steelcaps (boots) on, I’ve done that plenty of times.”
It would appear his hard work and dedication paid off as Lewis was the only Aussie boxer to win a round at the tournament when he defeated Polish opponent Tomasz Jablonski two rounds to one.
Unfortunately, in his next fight on 13 August, the middleweight could not make it past Uzbekistan’s Bektemir Melikuziev, who would go on to make it to the final.
The Sydneysider posted a message on his Facebook page after his exit, saying: “Its time to relax and enjoy myself.
“I’m looking forward to spending time with the ones I love when I’m home, I've been away from home for 10 weeks now, training in Australia first, then America. It's been a great camp and then being here in Brazil – it's been a journey I'll remember for the rest of my life.
“If you can take one thing from my experience (if you have been following my journey) it's to never give up on your dreams no matter what problems you face. It's that simple.
“Once again thank you Australia for getting behind me on the journey. I might not have gotten gold but I've got memories that are going to be with me forever. Time for a beer.”
The 22-year-old, who was also crowned the Australian and Oceania Champion,.
Lewis went into the games on the back of winning the bronze medal at the AIBA Asian/Oceania Olympic qualifying tournament in China in a unanimous points decision, in April.
He won gold at the Commonwealth Youth Games in 2011 but a broken jaw cut short his hope of appearing at the London Olympiad of 2012.
Quarry approached Lewis for further comments about his Olympic experience but he had not responded at the time of publication.