Preventing Unauthorised Access to Construction Sites

Keeping construction sites secure is a legal requirement under work health and safety laws. Site security helps prevent unauthorised access and protects members of the public, including children, from potential exposure to workplace hazards.

People who enter a construction site without permission may be unaware of the hazards present and are therefore at greater risk of injury. Even where hazards are controlled or signposted, those unfamiliar with the site may not recognise or understand the risks.

WorkSafe ACT inspectors continue to identify residential construction sites that are not adequately fenced or secured, creating a risk of unauthorised access. In 2024–25, security of the workplace was the most common subject of improvement notice issued for breaches of the WHS Regulation, accounting for 11 per cent of all improvement notices.

Persons conducting a business or undertaking (PCBUs) have a duty to ensure construction sites are secured against unauthorised access. This will generally require fencing or other suitable barriers to prevent entry. Where fencing is not reasonably practicable, alternative measures must be implemented to effectively isolate hazards and protect the public.

For further information on site security, see the links below:

https://www.worksafe.act.gov.au/health-and-safety-portal/safety-by-industry/building-and-construction/construction-site-management

Work Health and Safety (Construction Work Code of Practice) Approval 2025