Hazardous Manual Tasks

Most musculoskeletal injuries are not single-event lifts — they're cumulative damage from force + posture + repetition + duration. Redesign the task or the load, don't ask the worker to overcome it through training or willpower.

Quick Take

• Reg 60 definition: tasks involving sustained/repetitive force, awkward/sustained posture, repetitive movement, vibration, or unstable/heavy loads.
• Apply the hierarchy: eliminate manual handling → mechanical aids → workplace redesign → admin (last) → PPE (limited).
• Technique training alone is ineffective — design changes do the work.
• For brick / lintel / plasterboard / formwork: mechanical aids first; reduce load size next; team-handling third.

1. What counts (Reg 60)

A hazardous manual task is any task requiring lifting, lowering, pushing, pulling, carrying, holding or restraining a person, animal, or thing that involves one or more of:

• Repetitive or sustained force (gripping bricks, pushing trolleys).
• High or sudden force (lifting heavy loads; unexpected load shifts).
• Repetitive movement (conveyor packing, keyboard, hammering).
• Sustained or awkward posture (kneeling on concrete, overhead work, trunk twist).
• Exposure to vibration (whole-body from vehicles; hand-arm from power tools).

Plus environment (heat, slippery floor, lighting, confined space) and psychosocial factors (time pressure, low autonomy).

These contribute to musculoskeletal disorders (MSDs) — sprains, strains, back injuries, joint degeneration, nerve compression.

2. The four risk factors

![[hazardous_manual_tasks_img002.jpg|520]] Figure 1 — Neutral posture as the reference frame: spine roughly straight, shoulders relaxed, upper arms close to body, elbows ~ 90°, wrists straight. Task design should keep the worker close to this baseline.

1. Force — magnitude, frequency, application speed.
2. Posture — extreme angles, bending > 20°, twisting, asymmetric.
3. Movement — repetitive actions > 2/min over > 2 h cumulative or > 30 min continuous.
4. Duration — > 2 h/day or continuous > 30 min increases all the above. Micro-breaks help.

3. Examples of risk factors at work

![[hazardous_manual_tasks_img001.jpg|520]] Figure 2 — Repetitive grip force: bricklaying. Each pickup is small; cumulative effect over a shift is the injury.

![[hazardous_manual_tasks_img003.jpg|520]] Figure 3 — Sustained posture: holding plasterboard overhead while fastening. The longer it's held, the worse it gets.

![[hazardous_manual_tasks_img004.jpg|520]] Figure 4 — Awkward posture: trunk twist while pushing. Combine that with the load and you have a textbook back injury.

4. Hierarchy applied to manual handling

Don't start with technique training. Start with elimination.

Level	Examples
1. Eliminate	Don't move it: deliver to point-of-use, automate, robotic handling.
2. Substitute / Isolate / Engineer	Lighter materials; smaller pack sizes; mechanical aids (trolleys, hoists, vacuum lifters, conveyors, jib cranes); adjust working heights; vibration-damped tools.
3. Administrative	Rotation between high/low-risk tasks; team-handling procedure; rest-breaks; supervision.
4. PPE	Heat-resistant gloves; shock-absorbent shoes for hard surfaces. Limited role.

Technique-only training fails unless paired with redesign.

5. Mechanical aids

![[hazardous_manual_tasks_img005.jpg|520]] Figure 5 — Vacuum / suction lift for sheet materials. Reduces grip force and awkward posture in one step.

![[hazardous_manual_tasks_img006.jpg|520]] Figure 6 — Mechanical lifter: high-value intervention for repeated heavy-load handling.

Aid	Application
Trolleys / pallet trucks	Reduce push/pull force; well-maintained wheels critical.
Overhead / jib / gantry cranes	Steel lintels, precast beams, plant.
Vacuum / suction lifters	Plasterboard, glass, sheet metal — reduce grip + posture risk.
Conveyors	Continuous handling: bricks, tiles, components.
Lift tables	Height adjustment for loading/unloading.
Articulating arms	Heavy hand tools (grinders, drills) suspended to counter fatigue.

Aids that aren't matched to the task or kept maintained create new hazards. Train workers; service the equipment.

6. Workplace redesign

• Working heights: brick stacks, scaffold heights, material storage at waist-to-shoulder (optimal force range).
• Load weight / dimensions: pallets of bricks < 25 kg per bundle; formwork panels with handles for two-person handling.
• Reach distances: materials within natural reach. Avoid double-handling (pile → scaffold → wall = three lifts you only need to do once if delivered correctly).
• Layout: straight flow paths; minimise twisting / asymmetric postures during placement.
• Floor surfaces: even, non-slip; minimise uneven terrain during pours / excavation work.
• Workspace: room for team handling; safe maneuverability.

7. Construction-relevant examples

Task	Risk	Better
Brick handling	Repetitive grip; bend/twist	Conveyor / pallet truck; smaller bundles; team-handling with role assignment
Roof tiles	High repetition; sustained sloped posture	Conveyor; stage at working height; rotation
Lintels / beams	High force; awkward lift	Overhead crane / mechanical hoist; redesigned delivery
Plasterboard (gyprock)	Sustained overhead posture	Mechanical lifter / prop supports; point-and-shoot fastener
Concrete pour	Sustained vibration; repetitive shovel	Power vibrator; mechanical screed; rest breaks
Formwork assembly	High force striking; awkward postures	Pre-fab; vibration-damped striking tools; mechanical fastening

8. Assessment tools

• Observation — real-time analysis of posture, force, movement, duration.
• Worker consultation — discomfort surveys, near-miss reports.
• Code's Appendix F worksheet — systematic factor evaluation.
• REBA / RULA / PATH — formal ergonomic tools (Appendix G refs).

Skip formal assessment only when the hazard is well-understood and an effective control is already established.

9. Training, consultation, records

Training (per Reg 39)

• Hazardous manual task risk identification.
• Worker's specific role-related risks.
• Use of mechanical aids and equipment.
• Safe work procedures.
• Reporting maintenance / design defects.

Training does not substitute for redesign. It supports controls; it doesn't replace them.

Consultation — workers and HSRs about the tasks they do. They know which tasks hurt.

Records

• Risk assessments, control measures, review dates.
• Training records: date, topic, trainer, attendees.
• Incident reports + MSD trend by body region (wrist, back, shoulder).

10. Common pitfalls / quick wins

Do

• Reduce load weights by repackaging — smaller brick bundles, half-length tiles, lighter formwork panels.
• Stage materials at working height — eliminate stoop-and-reach.
• Add handles / handholds to difficult loads.
• Introduce micro-breaks in high-repetition tasks.
• Rotate workers across different task types.
• Improve floor surfaces and lighting.
• Procure pre-fabricated components — reduce on-site assembly demands.
• Encourage early discomfort reporting; treat it as a free risk indicator.

Don't

• Run "manual handling training" as the only intervention — that's a regulator red flag.
• Introduce a mechanical aid without worker training and acceptance.
• Ignore psychosocial factors — time pressure and understaffing override safe methods.
• Use team handling as a permanent substitute for mechanical solutions.
• Let trolley wheels degrade — performance drops and force rises invisibly.
• Treat MSD as personal weakness; treat it as a system signal.

11. Cross-references

• See also: [[managing_risks_of_plant]] (mechanical aids classification), [[managing_noise_and_preventing_hearing_loss]] (vibration is closely related)
• Foundations: [[risk_management_process]], [[whs_consultation_cooperation_coordination]]
• Glossary (MSD, Reg 60): [[glossary_and_key_concepts]]

---

Source: hazardous_manual_tasks.md (Safe Work Australia, model Code of Practice, CC-BY-NC 4.0). Edition: October 2018. Last verified against SWA: 2026-04-27.