A construction worker on a demolition site is lucky to be alive after the floor he was working on collapsed.
Video showed the machine was jackhammering when the floor collapsed.
Luckily, the machine was being held-up by a supporting device and the jackhammering machine balanced-out before falling.
The machine was then slowly lowered down to the next level.
It is unclear what sort of construction site the crew were working on or where it is.
Nobody appears to have been injured.
Scroll through to see more construction site accidents.