At 10.17am yesterday, workers at the construction site on 12 Chun Yat Street, Tseung Kwan O Industrial Estate reported to the police that a colleague fell from a height.

The worker, surnamed Xu, sustained head injuries. She was already unconscious and an oxygen mask was needed to assist her when she was rushed to Queen Elizabeth Hospital in Mong Kok.

Blood was seen on the worker's face as she was taken to the hospital, where she was later certified dead.

The cause of death will be confirmed after the autopsy.

The case was classified as an industrial accident.

Sources said that Xu was living with her husband on King's Road in North Point and the couple did not have any children.

She came to Hong Kong eight years ago to marry her husband, who works as an electrician at a construction site.

Xu had reportedly told her husband that it was tiring to work at a construction site, and she planned to find another job after this month.

The Association for the Rights of Industrial Accident Victims said they felt sorry about the accident.

The association's chief executive Siu Sin-man has met the family of the deceased worker at the hospital, and will follow up on the case.

The spokesman for the association said it suspected the female worker was clearing debris at the corridor when she stepped on a fireproof board that could not hold her weight, causing her to slip.

The Labour Department said it immediately sent officers to the scene upon receiving the report of the accident and is now conducting an investigation to look into the cause.

A spokesman from Gammon Construction Limited confirmed that one worker employed by one of its subcontractor died in the accident, and it expressed its condolences to the worker's family.

He said the company has already contacted the family, and will provide necessary assistance to them.

The construction company is now working closely with the relevant departments to assist the investigation process.