Module 3 of 86–8 minutes

Identifying Hazardous Manual Tasks

The risk factors that make a manual task hazardous, found in real SIL, community and in-home support work.

Last reviewed September 2026 · Part of Manual Handling Training for Disability Support Workers

Key learning points

Name the manual task risk factors: repetitive or sustained force, high or sudden force, repetitive movement, awkward or sustained posture, and vibration
Spot those factors in transfers, wheelchair pushing, personal care and household tasks
Understand how duration, frequency and the working environment multiply risk
Recognise the features of a participant or load that raise risk
Use a simple walk-through to identify hazardous manual tasks in a new home or setting

The risk factors

A manual task becomes hazardous when it involves one or more recognised risk factors. Most real support tasks involve several at once, and the combination matters more than any single factor.

Risk factors in disability support

Repetitive movement: Repeated reaching and bending while showering a participant seated on a shower commode
Sustained force: Holding a manual wheelchair still on a slope while a participant adjusts, or holding a leg while a splint is fitted
Repetitive force: Rolling a participant side to side several times a day to change continence aids or bedding
High force: Pushing a manual wheelchair and an adult up a steep ramp, over wet grass or through gravel
Sudden force: A participant's knees giving way during a stand transfer, or an extensor spasm while you are steadying them
Awkward posture: Kneeling on a bathroom floor to dry feet, leaning into a car to fasten a lap-sash belt, reaching across a bed against a wall
Sustained posture: Bending over a fixed-height bed for a full personal care routine, or crouching beside a low couch
Vibration: Long days driving a modified van, or pushing a wheelchair over corrugated paving and cobbles

Duration and frequency

How long each task takes — a personal care routine can be 45 minutes of bending
How many times it is repeated in a shift — toilet transfers may happen six or more times a day
How many shifts in a row involve the same participant and the same tasks, including sleepover shifts followed by a morning routine
Whether there is recovery time, or whether the shift moves straight from a hoist transfer to loading the van

The participant or load

High or fluctuating muscle tone, spasticity, dystonia or involuntary movement
Seizure activity, fatigue, pain or a recent illness that changes what the participant can do
Limited ability to understand or follow a transfer cue, or fear of the transfer
Behaviours of concern that can appear during personal care or transfers
Size and weight, including a power wheelchair that can weigh 100–150 kilograms with its batteries
Equipment that is heavy or awkward to carry — a folded manual wheelchair of 12–18 kilograms lifted into a boot, a portable ramp, a mobile hoist pushed over carpet

The environment

Domestic bathrooms with a narrow door, a step into the shower and no space to turn a commode
Steps at the front door, a sloping driveway, or a gravel path to the letterbox
Low soft couches, fixed-height beds and beds pushed against a wall
Car parks on a slope, high kerbs without ramps, wet grass, sand and playground bark
Weather, poor lighting, pets underfoot and household clutter
No second worker nearby to call on

Look for combinations

One risk factor on its own may be manageable. Awkward posture plus sustained force plus high frequency is where injuries cluster. When you look at a task, count the factors.

Practical scenario

Scenario: the picnic on the grass

You are pushing Marcus in his manual wheelchair across a damp oval to reach a family picnic. The front castors keep digging in, so you tip the chair back onto its rear wheels and lean into it, twisting to steer around the soft patches.

Which risk factors are present?

Reveal the explanation

High and sustained force from the soft ground, awkward posture from leaning forward and twisting, and sudden force each time a castor catches. Marcus is also at risk of being tipped. Before the next outing, plan a route on paths, ask whether the picnic spot can be closer to the path, or ask the OT whether all-terrain castors or a power-assist add-on would suit his chair.

Practical scenario

Scenario: the low couch

Sam prefers to sit on a low, soft couch in his SIL home. His plan says a one-worker assisted stand transfer, but from the couch you have to squat, pull and take much of his weight. It happens five or six times a shift.

Which factors make this hazardous, and what should you do?

Reveal the explanation

Awkward and sustained posture from squatting, high force because the seat is low and soft, and high frequency across the shift. The plan was almost certainly written for a firm chair at the right height, so report the difference to your supervisor and ask for the OT to review Sam's seating — furniture risers, a firmer cushion or a higher chair he still likes. Do not keep taking his weight in the meantime; use the higher chair the plan assumed.

A walk-through in a new setting

On your first shift in a new home or program, look at

How each participant transfers, with what equipment, and how many workers the plan requires
Where the steps, thresholds, slopes and narrow doorways are between bed, bathroom, kitchen and car
The bathroom — door width, shower access, where the commode goes, whether there is a shower stool for you
Bed height and whether the bed adjusts; whether the bed is against a wall
Where the hoist, slings, slide sheets and ramp are kept, and whether they are charged and in good condition
Who you call when something is not as the plan describes

Knowledge check

These questions are for your own learning. They are not part of the final assessment.

1. Pushing a manual wheelchair and an adult across wet grass while leaning forward and twisting to steer involves which risk factors?

2. Which of these is the best example of sudden force in disability support?

3. Which of the following is NOT a recognised manual task risk factor?

4. Why does frequency matter when assessing a support task?