Chronic Pain and Deconditioning | NSW Work Injury Claim

What this guide covers

Persistent pain can be followed by poor sleep, reduced activity, loss of conditioning, weight change and reduced confidence with movement. These consequences may affect treatment and work capacity, but each needs accurate clinical description.

Pain severity, inactivity or weight gain does not by itself create a separate WPI rating. The claim should distinguish symptoms, diagnosed physical conditions, secondary psychological symptoms and practical restrictions.

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Keep the original diagnosis clear

Begin with the accepted physical injury and its treatment course. Chronic pain may follow a spinal, joint, nerve or complex regional pain condition, but the underlying diagnosis and accepted scope remain important.

A later certificate may use broad terms such as chronic pain, deconditioning or weight gain. Those labels should not replace a clinical explanation of the original injury, current findings and functional change.

Possible later consequences

The recovery picture may include several linked but distinct issues:

persistent pain and sleep disruption affecting concentration and endurance
loss of strength, cardiovascular fitness or task tolerance after prolonged inactivity
weight change that makes mobility or rehabilitation more difficult
fear of movement, reduced confidence or secondary anxiety or depression
a diagnosed pain condition requiring specialist or multidisciplinary treatment

Causation requires more than a sequence of events

The treating team should explain how the accepted injury and treatment restrictions contributed to the later functional problem. They should also address pre-injury activity, unrelated health conditions, medication, diet, sleep and other factors where relevant.

A measured rehabilitation assessment is more useful than a broad statement that the worker is “unfit”. It can identify what changed, what remains physically possible and what is limited by pain, conditioning or another diagnosis.

Track recovery, not just pain scores

A useful chronology records treatment, activity restrictions, failed or successful rehabilitation, sleep and medication changes, periods of improvement, work trials and the onset of any later diagnosis. It should not assume that every fluctuation proves deterioration.

Weight, activity or conditioning records should be used respectfully and only where clinically relevant. They should not be used to blame a worker for a difficult recovery.

Treatment should have a defined purpose

Proposed pain management, graded exercise, physiotherapy, psychological treatment, medication review or multidisciplinary rehabilitation should identify the accepted condition, goals and expected functional benefit.

If the insurer disputes treatment, a report should explain why it is reasonably necessary, how risks are managed, what has already been tried and how progress will be measured.

Symptoms, diagnoses and accepted conditions are different things

An insurer may accept a back injury but dispute a later pain diagnosis, psychological condition or treatment for deconditioning. Check whether the later condition has been formally raised and decided.

Non-work-related health conditions can still affect recovery-at-work planning, but that does not make them compensable. The medical evidence should distinguish claim liability from practical rehabilitation needs.

Common disputes

Insurers may dispute whether:

ongoing pain is supported by the accepted pathology and clinical findings
deconditioning results from the injury or from unrelated health factors
psychological symptoms are secondary to the physical injury or have another cause
the proposed treatment is reasonably necessary and likely to improve function
the worker can sustain suitable employment despite persistent symptoms

Pain and WPI are not the same assessment

NSW excludes AMA5 Chapter 18 pain assessment. WPI is assessed under the method for the underlying accepted body system, using the findings required by the NSW Guidelines. Pain intensity alone does not set the percentage.

Secondary psychological impairment is not assessed for WPI. Any accepted separate physical impairment must be assessed under its proper method and combined only where the Guidelines permit, without double counting the same functional loss.

How recovery consequences affect capacity and treatment

Capacity should address sustainable hours, attendance, pace, concentration, positional tolerance, medication effects and recovery after activity. A worker may complete a short task during assessment but be unable to repeat it across a normal week.

Weekly-payment and treatment decisions still depend on accepted conditions, certificates, earnings and the applicable statutory rules. A chronic course does not guarantee ongoing payments.

Evidence checklist

Evidence should show the functional course, not merely repeat a diagnosis:

acceptance decision and certificates of capacity
GP, specialist, pain clinic, physiotherapy and psychology records
medication history and documented side effects
functional or rehabilitation assessments and graded-program outcomes
work trial records showing hours, tasks, symptoms and recovery time
objective findings and reports for the underlying physical condition

Common questions

Does chronic pain automatically increase WPI?

No. NSW does not use AMA5 Chapter 18 pain ratings. The underlying accepted condition is assessed under the relevant NSW body-system method.

Can deconditioning affect work capacity?

It can be relevant where clinical and rehabilitation evidence explains the functional limits and their relationship to the injury. Capacity should address sustainable work, not a single effort.

Can weight gain be treated as a consequential condition?

It depends on the diagnosis, evidence and causal reasoning. Weight change may affect recovery without necessarily being an accepted compensable condition.

What if chronic pain causes depression or anxiety?

That may raise a secondary psychological injury issue. Medical evidence should explain the connection. Secondary psychological impairment is not assessed for WPI in NSW.

What evidence helps with a treatment dispute?

A report should identify the accepted diagnosis, treatment goal, functional benefit, prior treatment response, risks and alternatives.

NSW sources

Last reviewed 19 July 2026

SIRA Standard of Practice S13: additional or consequential medical conditions
Explains how insurers should respond when a certificate of capacity identifies an additional or consequential condition, including liability and treatment decisions.
NSW workers compensation guidelines for the evaluation of permanent impairment
See paragraphs 1.17–1.22 and 1.31 for multiple impairments, combined values, psychiatric impairment and treatment-related secondary impairment.
SIRA: assessment of permanent impairment
Current worker guidance on permanent impairment assessment and the principal assessment framework applying from 1 July 2026.
SIRA workers compensation benefits guide
Current overview of weekly payments, treatment and permanent impairment benefits in the NSW scheme.

Is the later condition included in your claim?

Send the original acceptance, later diagnosis, current certificate of capacity and insurer decision. We can help identify what has been decided and what evidence may be needed next.