You must notify WorkSafe about construction excavation work
You must notify WorkSafe three days before construction excavation work involving:
a trench (if the excavated depth is more than 1.5 metres)
a shaft (if the excavated depth is more than two metres)
If the construction excavation would be deep enough for a person to enter or there is a health and safety risk to anyone from the excavation.
What you'll need
details about the employer or self-employed person completing the excavation
details about the supervisor, including training and experience in trenching and excavation
details of the excavation location and type
details about risk control measures
Excavations exempt from notification
Notification is not required if the excavation is made as part of building work for which a building permit has been issued and is in force under the Building Act 1993.
Further information is available in the excavation compliance code 2018 or by contacting WorkSafe's advisory service.
WorkSafe Advisory Service
WorkSafe's advisory service is available between 7:30am and 6:30pm Monday to Friday. If you need more support, you can also contact WorkSafe using the Translating and Interpreting Service (TIS National) or the National Relay Service.