Heartbreaking Video Shows Killed Worker Celebrating 18th Birthday Days Before Death

Christopher Cassaniti was killed after scaffolding, about 15 to 17 metres high, collapsed at his Macquarie Park work site on Monday.

But just days before the tragic event, Cassaniti was celebrating his 18th birthday with his workmates.

Last Wednesday his mother posted a video of Cassaniti with his workmates celebrating his big day.

Christopher Cassaniti. Image: Patrizia Punzi Cassaniti/ Facebook

The video was posted to his mother's Facebook, and shows his workmates singing 'Happy Birthday' and 'He's A Jolly Good Fellow' to the smiling teen.

As Cassaniti blows out his candles he receives a cheer from his mates.

One workmate can be heard telling Cassaniti he has to kiss the nearest person if he hits the bottom while cutting the cake.

"Yeah his mother," Ms Cassaniti jokes.

Christopher Cassaniti celebrating his birthday at work. Image: Patrizia Punzi Cassaniti

His mother also posted photos of Cassaniti's birthday celebrations that took place over the weekend.

"We had a great time," she said.

Cassaniti celebrating with his family. Image: Patrizia Punzi Cassaniti/ Facebook

In a statement, the family said they are "devastated and empty" at the loss of Christopher.

"Christopher was a gentle, kind and hardworking young man full of life and love for his family. He was adored by everyone who was lucky enough to meet him," they said.

"While nothing can bring our son back, we don’t want his death to be just another statistic."

18-year-old Christopher Cassaniti was sadly pronounced dead at the scene. Image: Facebook

The family has called on the government to improve safety standards on construction sites.

"No other family should have to go through this horrendous pain. We ask that the government step in and take immediate action and implement stringent measures regarding safety on construction sites," they said.

"Crucial safety checks and procedures need to be at the front and centre of every construction site."

Ms Cassaniti's Facebook page has been flooded with tributes from family and friends.

Even strangers have sent their condolences via social media after being affected by the tragic death.

"I dont (sic) know you and your family but from my family to yours our hearts go out to you all... rest in peace beautiful soul xxxxx," one person said.

"i (sic) feel the same...i dont (sic) know them but killed me this story..and his beautiful brothers and parents may they get through this together," another person replied.

Image: Patrizia Punzi Cassaniti/ Facebook

Friends of the teenager have been posting their own tributes.

Bella Mineo said Cassaniti "occupied a special place in her heart" and she would always remember their "special memories".

"you (sic) have been my friend since the first day of kindergarten.. words can’t express how much this hurts. you were full of positivity, always smiling, always seeing the best in everyone," she said.

Prime Minister Scott Morrison has also tweeted his condolences to the family, calling the incident "heartbreaking".

"I am just so saddened about the death of young scaffolding apprentice Christopher Cassaniti," he said.

"To his parents and workmates my heart goes out to you. Just heartbreaking."

READ MORE: One Dead, Another Worker Critical In Scaffolding Collapse

Labor leader Bill Shorten also sent his best wishes to the family, reflecting on his own experiences as a father.

"Shocking and heartbreaking news from Sydney yesterday with the death of an 18 year old apprentice," he tweeted.

"As a father of 3, it is incomprehensible what his family must be going through at this time -- and I think I speak for everyone when I say they are in our thoughts."

The Construction, Forestry, Maritime, Mining and Energy Union NSW (CMFEU) also offered its condolences to the family.

"Our deepest and heartfelt condolences are extended to the family of the young man lost and sending our best to the other worker seriously injured for recovery," it said in a statement.

Officials from the CMFEU will assist the investigation into what caused the scaffolding collapse.

Featured Image: Facebook.