Part 7 of the Workplace Health and Safety Regulation 2008 details the requirements in respect to notifying of particular workplace incidents:
an incident resulting in a person suffering a work injury that is a serious bodily injury
a work caused illness
a dangerous event
These notifications must be made by the Principal Contractor or relevant person as appropriate and in the time specified and in the approved form.
The person must give notice in the approved form within 24 hours after the person becomes aware of the incident happening or if the workplace incident causes death, promptly after the person becomes aware of the death and in the approved form within 24 hours after the person becomes aware of the death.
Workplace Health and Safety Queensland Inspectors investigate workplace incidents to:
determine their cause
prevent similar incidents recurring in the workplace
notify employers of incidents occurring within their industry
prosecute offences against the Workplace Health and Safety Act 1995
Comprehensive investigations are generally completed within 6 months. Less serious incidents or complicated complaints are dealt with more quickly.