Man hurt falling from scaffolding in northern Sydney

A 23-year-old man has been taken to hospital after falling from scaffolding in a workplace accident.

He has a head injury after falling three to four metres in Forestville on Sydney's northern beaches.

The accident is just the latest to happen in Australian workplaces this week.

Yesterday, one man died in Sydney and another in Victoria, both in accidents in the workplace.

Two other men were also injured in accidents in Sydney.

Emergency services were called to a timber pallet factory at Forrest Road in St Marys in the south-west of the city about 5.40am after reports of an accident yesterday.

NSW Ambulance deployed four crews and a medical specialist team.

The 30-year-old man had become wedged in machinery and suffered severe head injuries and major blood loss.

Emergency services managed to get him out and loaded him into an ambulance, but he couldn't be saved.

"His injuries were catastrophic and unfortunately, despite being freed from the machinery, he died at the scene," NSW Ambulance Acting Deputy Director Jordan Emery said.

Meanwhile, a man was crushed and killed after a brick wall collapsed at a work site in western Victoria.

The incident occurred while a house was being demolished at Kenthworthy Place in Mount Pleasant – a suburb of Ballarat.

A Victoria Police spokeswoman has confirmed the death.

A worker was later injured in an accident in Sydney's eastern suburbs.

The 50-year-old worker is believed to have fallen from about eight metres from scaffolding at a waterside property in Point Piper at 7.45am and was rushed to hospital.

The third incident was in Pyrmont, where steel pipes fell and hit a man on the head in Miller Street at 8am.

Ambulance bosses said this week workplace accidents are becoming more common.

Mr Emery, said: "Incidents at worksites are not only confronting, but can be extremely complex and it shows just how quickly any situation can change.

"Paramedics have attended far too many workplace incidents lately - it's becoming more and more frequent.

"These situations are harrowing for emergency services, fellow workers and of course the families – emergency services work together under these tense conditions to do everything they can for the patient.

"Often we are dealing with both minor incidents, but we are also dealing with major incidents were people have been seriously injured, or more tragically where a life has been lost."

The incidents also attracted the criticism of CFMEU NSW President Rita Mallia, who said Safework NSW needs to do more.

"Safework NSW is completely asleep at the wheel. They've failed to prevent these accidents and injuries, which they're duty-bound to do," she told 9News.

The incidents has renewed calls for 'Christopher's Law' - named after the death of 18-year-old Sydney apprentice Christopher Cassaniti - to have safety officers on-site and larger penalties for unsafe workplaces.

His mother, Patricia, today said it's crucial the law be passed.

"It's absolutely shocking to know that there's not one but three incidents in Sydney. It's like a kick in the guy - it just bring me back to when it happened with my son," she said.

"It must be done and we can't wait any longer."