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Manual Excavation and Hand Digging Risk Assessment

Manual Excavation and Hand Digging Risk Assessment

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Manual Excavation and Hand Digging Risk Assessment

Product Overview

Identify and control organisational risks associated with Manual Excavation and Hand Digging through a structured, management-level Risk Assessment that supports planning, governance and safe systems of work. This document helps demonstrate Due Diligence under the WHS Act, reducing operational liability and strengthening your company’s WHS Risk Management framework.

Risk Categories & Hazards Covered

This document assesses risks and outlines management controls for:

  • WHS Governance, Roles and Legal Compliance: Assessment of officer due diligence, allocation of responsibilities, consultation duties and alignment of excavation activities with statutory obligations.
  • Project and Work Planning for Manual Excavation: Management of scoping, job planning, task sequencing and integration of manual excavation controls into broader project risk and construction management plans.
  • Underground Service Location and Permit-to-Dig Systems: Protocols for service locating, Dial Before You Dig information, permit-to-dig authorisation, and controls to minimise service strike risks.
  • Design, Engineering and Excavation Method Selection: Assessment of excavation design inputs, engineering advice, and selection of appropriate manual, mechanical or hybrid excavation methods to minimise risk.
  • Site Access, Public Interface and Pedestrian Management: Management of access points, segregation of workers and the public, signage, and safe movement controls around excavation zones.
  • Excavation Support, Barricading and Edge Protection Systems: Controls for shoring, benching, shielding, barricades and edge protection to prevent collapse and falls into excavations.
  • Ground Conditions, Environmental and Weather Management: Assessment of soil stability, groundwater, vibration, adjacent structures, and weather impacts on excavation safety and planning.
  • Worker Competency, Training and Authorisation: Requirements for competency, verification of experience, supervision levels, and authorisation to undertake manual excavation activities.
  • Plant, Tools and Equipment Management for Hand Digging: Systems for selection, inspection, maintenance and safe use of hand tools and small plant used in manual excavation.
  • Manual Handling, Ergonomics and Fatigue Management: Assessment of musculoskeletal risks, work-rest cycles, job rotation, and ergonomic work methods for digging and spoil handling.
  • Traffic, Vehicle Interaction and Plant Interface: Management of interfaces between workers on foot, vehicles and mobile plant operating near or over excavation areas.
  • Public Safety, Community Notification and Stakeholder Management: Protocols for notifying neighbours, managing community expectations, and maintaining safe conditions for the public around works.
  • Incident Reporting, Service Strike Management and Investigation: Systems for prompt reporting, escalation, containment and investigation of incidents, near misses and utility strikes.
  • Emergency Preparedness and Rescue Planning for Excavations: Planning for collapse, engulfment, service strike, and medical emergencies, including rescue procedures and coordination with emergency services.
  • Monitoring, Inspection, Consultation and Continuous Improvement: Processes for inspections, audits, workforce consultation, corrective actions and ongoing improvement of excavation risk controls.

Who is this for?

This Risk Assessment is designed for Business Owners, Construction Managers, Project Managers and Safety Officers responsible for planning, approving and overseeing Manual Excavation and Hand Digging activities across their operations.

Hazards & Risks Covered

Hazard Risk Description
1. WHS Governance, Roles and Legal Compliance
  • • Lack of clear WHS responsibilities for manual excavation and hand digging activities
  • • Inadequate understanding of WHS Act 2011 and WHS Regulations relating to excavation work, public safety and underground services
  • • Failure to identify the Person Conducting a Business or Undertaking (PCBU) and principal contractor duties for excavation near public areas
  • • No process to ensure duty of care to workers and members of the public adjacent to work zones (e.g. pedestrians on footpaths)
  • • Inadequate consultation with Health and Safety Representatives (HSRs) and workers about excavation risks
  • • Poor integration of excavation risk management into the organisation’s WHS management system and policies
  • • Failure to ensure officers exercise due diligence in relation to higher-risk excavation and service location activities
2. Project and Work Planning for Manual Excavation
  • • Manual excavation and hand digging activities commenced without a formal risk assessment and written planning
  • • Inadequate scoping of work adjacent to public footpaths and in high pedestrian traffic areas
  • • Failure to identify whether the work triggers construction project requirements (e.g. principal contractor, WHS management plan)
  • • Poor sequencing of tasks leading to overlapping activities and increased exposure to struck-by, trip and service contact risks
  • • Lack of planning for reduced visibility periods (e.g. early mornings, evenings, poor weather) near public access routes
  • • No requirement for pre-start coordination meetings between supervisors, workers and subcontractors
  • • Insufficient contingency planning for unexpected ground conditions or uncharted underground services
3. Underground Service Location and Permit-to-Dig Systems
  • • Manual excavation commenced without up-to-date dial-before-you-dig (DBYD / Before You Dig) service plans
  • • Reliance on old or incomplete asset drawings for service locations near footpaths and verges
  • • Absence of a formal permit-to-dig system for hand excavation near underground services
  • • Inadequate process for positive identification (potholing) of live services before bulk hand excavation
  • • No defined clearance rules or risk criteria for different service types (gas, electricity, water, communications)
  • • Poor communication of service location information to the work crew and subcontractors
  • • Failure to manage changes when new services are identified during excavation
4. Design, Engineering and Excavation Method Selection
  • • Failure to consider alternative construction or design options that reduce the need for manual excavation next to public footpaths
  • • Inappropriate selection of excavation method near live services (e.g. excessive mechanical excavation where hand digging is required)
  • • No systematic engineering review of excavation depth, width and support requirements in planning stages
  • • Inadequate consideration of existing structures (footpaths, kerbs, retaining walls, adjacent buildings) when planning excavation method
  • • Lack of formal criteria for choosing hand excavation over plant, or combining methods in a safe sequence
  • • Insufficient engineering assessment of potential ground collapse or undermining of footpaths and public infrastructure
5. Site Access, Public Interface and Pedestrian Management
  • • Uncontrolled interaction between workers, excavation activities and members of the public using adjacent footpaths
  • • Insufficient separation between manual excavation zones and pedestrian routes
  • • No formal pedestrian management plan for high-traffic footpaths or shared paths
  • • Inadequate temporary traffic management for areas where excavations are near kerbs or roadways
  • • Poorly planned site access points leading to pedestrians entering work zones unintentionally
  • • Lack of safe alternate pedestrian routes or clear wayfinding around excavations
  • • Insufficient measures to protect vulnerable road users such as children, elderly, or mobility-impaired pedestrians
6. Excavation Support, Barricading and Edge Protection Systems
  • • Inadequate systemic requirement for trench shoring, benching or battering for hand-excavated trenches
  • • Lack of standardised excavation edge protection adjacent to public footpaths and pedestrian areas
  • • Failure to ensure consistent use of physical barriers and covers over open holes and pits after hours
  • • Use of ad hoc barricading solutions that do not meet Australian Standards or authority requirements
  • • No formal inspection regime for shoring, trench boxes and structural supports used with hand digging
  • • Inadequate control over unauthorised access into excavations by workers or the public
7. Ground Conditions, Environmental and Weather Management
  • • Lack of systematic assessment of soil type, stability and moisture content before commencing manual excavation
  • • Failure to manage changes in ground conditions due to rain, flooding, or nearby water services
  • • Inadequate systems to respond to contamination, asbestos in soil or unexpected hazardous materials
  • • No formal process to monitor and control water ingress into hand-excavated areas
  • • Poor planning for excavation near trees, roots and existing structures leading to instability or damage
  • • Inadequate allowance for heat, UV exposure, or cold/wet conditions affecting workers during sustained hand digging tasks
8. Worker Competency, Training and Authorisation
  • • Workers performing manual excavation near live services without appropriate competency or verification of skills
  • • Supervisors lacking training in excavation risk management and service location principles
  • • No formal authorisation system for personnel allowed to work within defined distances of underground utilities
  • • Inadequate induction covering project-specific excavation hazards, public interface risks and emergency procedures
  • • Failure to ensure workers understand plans, permits and service drawings due to language, literacy or experience barriers
  • • Lack of refresher training leading to drift from safe excavation practices and hand digging techniques
9. Plant, Tools and Equipment Management for Hand Digging
  • • Inadequate selection of hand tools for excavation near services, increasing risk of service damage or strain injuries
  • • Lack of maintenance system for hand tools (shovels, crowbars, pinch bars) leading to tool failure or misuse
  • • No controls to prevent inappropriate use of powered tools (e.g. jackhammers, augers) in close proximity to live services
  • • Absence of pre-use inspection processes for excavation equipment and utility detection devices
  • • Insufficient calibration and maintenance of service locators and detection equipment
  • • Poor storage and transport arrangements for tools and equipment, creating trip and manual handling risks on public footpaths
10. Manual Handling, Ergonomics and Fatigue Management
  • • Prolonged and repetitive hand digging leading to musculoskeletal disorders and overexertion injuries
  • • Lack of planning for workload distribution and rotation of workers during intensive manual excavation
  • • Insufficient guidance on correct hand digging techniques and ergonomic postures in constrained spaces
  • • No structured approach to managing fatigue associated with physically demanding excavation works
  • • Inadequate consideration of manual handling risks from spoil removal, materials handling and shoring components
  • • Pressure to complete hand excavation quickly due to schedule constraints, encouraging unsafe pace or techniques
11. Traffic, Vehicle Interaction and Plant Interface
  • • Manual excavation workers exposed to passing vehicles or mobile plant operating near footpaths and verges
  • • Lack of formal traffic management system for deliveries, spoil removal trucks and support plant around excavation works
  • • Inadequate separation between hand digging areas and operating machinery such as excavators or skid steers
  • • Poor visibility of workers to plant operators due to inadequate high-visibility workwear or barriers
  • • No defined exclusion zones between manual excavation and moving vehicles or plant
12. Public Safety, Community Notification and Stakeholder Management
  • • Members of the public exposed to trip, fall or struck-by hazards from poorly communicated excavation works
  • • Lack of notification to nearby residents, businesses or facility managers about upcoming hand digging near footpaths
  • • Inadequate process for managing complaints or concerns raised by the community regarding excavation activities
  • • No engagement with asset owners or service providers when working near critical utilities or easements
  • • Failure to provide clear contact details for reporting hazards or incidents related to excavation sites
13. Incident Reporting, Service Strike Management and Investigation
  • • Under-reporting of near misses, minor service contacts and excavation-related incidents
  • • Lack of a structured response procedure for utility strikes, ground collapse or public injury incidents
  • • Failure to notify relevant authorities, utility owners or regulators when required under legislation
  • • Inadequate root cause analysis of incidents leading to repeated failures in service protection and excavation systems
  • • Absence of formal corrective and preventive action tracking following incidents or near misses
14. Emergency Preparedness and Rescue Planning for Excavations
  • • Lack of documented emergency plans for trench collapse, worker injury or service strike during manual excavation
  • • No rehearsed rescue procedures for partially or fully buried workers in hand-dug trenches
  • • Insufficient communication equipment and protocols for summoning emergency services from remote or noisy sites
  • • Inadequate first aid coverage or equipment provision for excavation works
  • • Failure to consider emergency egress from deeper or confined hand excavations
15. Monitoring, Inspection, Consultation and Continuous Improvement
  • • Infrequent or ineffective inspections of excavation sites and hand digging practices
  • • Lack of mechanisms for workers to provide feedback on excavation risk controls and improvements
  • • Failure to review risk assessments, permits and procedures in light of actual site conditions and incidents
  • • Inadequate performance indicators to monitor excavation safety performance over time
  • • Poor follow-up on identified non-conformances or audit findings related to manual excavation

Need to add specific hazards for your workplace?

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Legislation & References

This document was researched and developed to align with:

  • Work Health and Safety Act 2011
  • Work Health and Safety Regulations 2017
  • Excavation Work Code of Practice: Guidance on managing health and safety risks associated with excavation work.
  • Managing the Risk of Falls at Workplaces Code of Practice: Requirements for preventing falls into excavations and around edges.
  • How to Manage Work Health and Safety Risks Code of Practice: Framework for identifying, assessing and controlling WHS risks.
  • Managing the Work Environment and Facilities Code of Practice: Requirements for safe access, egress, amenities and environmental conditions at excavation sites.
  • AS/NZS ISO 31000:2018: Risk management — Guidelines.
  • AS 1742 Set: Manual of uniform traffic control devices for managing traffic and pedestrian interfaces near excavation works.
  • AS 1657: Fixed platforms, walkways, stairways and ladders — Design, construction and installation (relevant to access and edge protection around excavations).
  • AS/NZS 4801 / ISO 45001: Occupational health and safety management systems — Requirements for systematic WHS management and continuous improvement.
Standard Risk Assessment Features (Click to Expand)
  • Comprehensive hazard identification for all activities
  • Risk rating matrix with likelihood and consequence analysis
  • Existing control measures evaluation
  • Residual risk assessment after controls
  • Hierarchy of controls recommendations
  • Action priority rankings
  • Review and monitoring requirements
  • Consultation and communication records
  • Legal compliance references
  • Sign-off and approval sections

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