Primary sources used
Plain English answer
How this assessment usually works
NSW guidelines treat chronic pain carefully. AMA5 Chapter 18 is excluded, and conditions associated with chronic pain are generally assessed through the underlying diagnosed condition. CRPS has its own NSW-guideline pathway and needs careful medical evidence.
The assessor does not decide legal liability. The assessment is a medical opinion about permanent impairment under the NSW workers compensation guidelines. The legal importance is what the percentage does to Section 66, weekly payments, medical expense time limits, settlement strategy or work injury damages preparation.
Step 1
Accepted injury
Check the accepted injury wording, body system and mechanism before looking at the percentage.
Step 2
Medical method
Check whether the correct NSW guideline method, clinical findings and records were used.
Step 3
Claim effect
Check what the WPI percentage changes before accepting a report or settlement position.
What the assessor usually checks
- whether the diagnosis is chronic pain associated with another injury or CRPS
- the underlying accepted injury and whether pain is already allowed for in that assessment
- pain specialist, rehabilitation and therapy records
- functional impact on daily activities, sleep, medication, tolerance and work capacity
- whether psychological symptoms are secondary and should not be confused with primary psychiatric impairment
Evidence that may help
A useful WPI report depends on the material the assessor receives. These records often matter for chronic pain and crps:
- pain specialist and rehabilitation physician reports
- treating GP notes recording pain pattern, medication and functional effect
- physiotherapy, occupational therapy and graded activity records
- capacity certificates dealing with endurance, flare-ups, concentration and safe duties
- records explaining CRPS signs, symptom consistency and treatment response where relevant
Common insurer or report disputes
- the insurer says pain is subjective and not assessable
- the report double-counts or ignores pain instead of applying the NSW pathway
- CRPS signs are not recorded consistently
- secondary psychological symptoms are misused to reject capacity evidence
- treatment is described as excessive without engaging with specialist reasoning
Questions to ask when the report comes back
How this connects to thresholds and strategy
SIRA says permanent impairment compensation generally requires 11% or more permanent impairment for physical injury, and 15% or more for primary psychological injury. Secondary psychological injury is treated differently. Those thresholds are not a payout promise; they are eligibility and strategy checkpoints that need to be applied to the accepted injury and current evidence.
A low WPI opinion may also affect weekly-payment planning, treatment time-limit issues, dispute posture, and whether work injury damages threshold advice is required. The safest approach is to review the method, evidence and consequences before signing or letting the insurer rely on a weak assessment.
Questions workers often ask
Is chronic pain and crps assessed the same way as every other injury?
No. NSW permanent impairment assessment depends on the accepted injury, body system, medical evidence, maximum medical improvement and any NSW-specific guideline modification. The assessment method for chronic pain and crps should be checked against the injury actually accepted in the claim.
Can I calculate the WPI percentage myself?
No. A trained permanent impairment assessor must perform the assessment. A worker can still check whether the report used the correct injury description, records, body system, causation assumptions and deduction reasoning.
What if the insurer report seems too low?
Ask for the report and the material sent to the assessor. For chronic pain and crps, compare the report against treating records, imaging, specialist material, work duties and certificates of capacity before accepting the percentage or relying on it for settlement strategy.
Does maximum medical improvement matter?
Yes. SIRA guidance says permanent impairment assessment should occur when the condition has stabilised and is unlikely to change substantially in the next year with or without treatment. If treatment is incomplete, the timing may need review.
General information only
This information is general in nature and is not legal advice. You should obtain advice about your own circumstances before relying on a WPI percentage, accepting a lump sum offer, or responding to an insurer decision.
Reviewed by NSW Work Injury Claims - a branch of Stephen Young Lawyers.
Related injury and impairment pages
Need a WPI assessment checked?
If the percentage does not match the accepted injury, treatment history, imaging, surgery, work duties or current restrictions, get the report checked before accepting the insurer position.