What is the WPI threshold for impairment benefits in Victoria?

Under the Workplace Injury Rehabilitation and Compensation Act 2013 (WIRC), Victorian workers comp Impairment Benefits start at 10% WPI for physical injuries. Psychiatric impairment benefits require a higher threshold under WorkSafe's GEPIC methodology. The 'serious injury' threshold for common-law damages is separate and generally requires either 30% WPI or specific listed injuries.

How does the "serious injury" certificate work in Victoria?

Common-law damages in Victorian workers comp require a 'serious injury' certificate. You can obtain this either by reaching 30% WPI (physical) or 30% psychiatric impairment under GEPIC, OR by satisfying the narrative test: that the consequences of the injury are 'severe', meaning more than significant or marked in their impact. Many serious injury certificates are issued on the narrative basis, particularly for soft-tissue and psychiatric injuries that don't reach 30% WPI but have significant functional impact.

What is the WPI assessment Guide used in Victoria?

Victorian workers comp WPI is assessed under the AMA Guides 4th edition with WorkSafe Victoria modifications. Psychiatric WPI uses GEPIC (Guide to the Evaluation of Psychiatric Impairment for Clinicians). TAC uses similar but separate methodology under the Transport Accident Act 1986.

Who assesses WPI in Victoria?

An accredited Medical Panel-recognised assessor performs the WPI assessment. WorkSafe Victoria maintains a list of accredited assessors by speciality. If you dispute the rating, the matter goes to a Medical Panel - typically three specialist doctors who issue a binding determination.

How much is each percent of Victorian WPI worth?

Victorian Impairment Benefit lump sums under WIRC scale with WPI percentage and CPI-index annually. Approximate 2024-25 ranges: 10-19% WPI ~$30,000-$80,000; 20-29% WPI ~$80,000-$170,000; 30%+ ~$170,000-$300,000+ (and opens common-law). The exact amounts are published in the Compensation Lump Sum Table issued by WorkSafe Victoria.

Victoria WPI Calculator: Whole Person Impairment Victoria

Victoria WPI calculator

Victorian WPI scheme overview

Victoria operates two parallel WPI assessment streams:

Workers compensation - assessed under the AMA Guides 4th edition (with WorkSafe modifications) for physical injuries, and GEPIC for psychiatric. Used for Impairment Benefits under the Workplace Injury Rehabilitation and Compensation Act 2013 (WIRC), and to support 'serious injury' determinations for common-law damages.
TAC (Transport Accident Commission) - assesses WPI under the Transport Accident Act 1986. Different rules, different thresholds, different benefit structures from workers comp.

AMA 4th edition (with VIC modifications)

Victoria is one of the few schemes still using the AMA Guides 4th edition (most schemes have moved to 5th or 6th). The 4th edition tends to produce slightly different ratings than 5th or 6th for the same injury - particularly for spinal and psychiatric impairments. WorkSafe has issued state-specific modifications further refining the methodology.

The assessment must be performed by an accredited Medical Panel assessor. Where ratings sit on a threshold, careful preparation - thorough treating doctor reports, range of motion measurements, neuropsychological testing - matters enormously.

Victorian WPI thresholds

Scheme / claim type	Threshold
Workers comp Impairment Benefit (IB) - physical	10% WPI minimum
Workers comp Impairment Benefit - psychiatric (GEPIC)	30% (or specific listed injuries)
Workers comp common-law damages - physical	30% WPI OR 'serious injury' narrative
Workers comp common-law damages - psychiatric	30% GEPIC OR 'serious injury' narrative
TAC Impairment Benefit	11% WPI minimum
TAC common-law damages	'Serious injury' threshold

Impairment Benefit (IB) lump sums

Victorian workers comp IB lump sums (approximate 2024-25 amounts; CPI-indexed annually):

WPI %	Approximate IB lump sum
10% (minimum)	$15,000 - $25,000
15%	$40,000 - $60,000
20%	$70,000 - $100,000
25%	$110,000 - $150,000
30%	$170,000 - $230,000
40%	$240,000+
50%+	$300,000+ plus common-law access

Always check the current published Compensation Lump Sum Table on the WorkSafe Victoria website for exact amounts.

"Serious injury" gateway and common-law damages

Victoria is unique in offering two paths to common-law damages:

Path 1: 30% WPI

If your WPI is 30% or higher (physical, or 30% psychiatric under GEPIC), you have automatic 'serious injury' status and can pursue common-law damages without further test.

Path 2: Narrative "serious injury" certificate

Below 30% WPI, you can still obtain a 'serious injury' certificate by satisfying a narrative test: the consequences of the injury must be 'severe'. The County Court (or Supreme Court for higher quantum) determines whether the threshold is met. Many serious injury certificates are issued for soft-tissue, psychiatric and chronic pain conditions where the WPI is below 30% but the functional impact is significant.

The narrative path is critically important - it preserves common-law access for many Victorian workers whose injuries don't translate to high WPI percentages but profoundly impact their lives.

Common-law damages once a serious injury certificate is held cover loss of earnings (past and future), medical expenses, care, pain and suffering. Settlements typically range from $200,000 to $1,500,000+ depending on injury severity and earnings.

TAC WPI assessment differs

TAC matters use separate methodology under the Transport Accident Act 1986. The TAC WPI threshold for Impairment Benefits is 11% (rather than workers comp's 10%). TAC also has its own 'serious injury' gateway for common-law damages, which works similarly to the workers comp gateway but with TAC-specific framing.

Where you've been injured in a motor accident at work, you may have both TAC and workers comp claims - they interact. Specialist legal advice is essential to maximise net recovery and avoid procedural traps.

Free Victorian WPI claim assessment A WorkSafe VIC and TAC specialist will assess your matter and arrange formal WPI assessment when timing is right →