The legal framework — three conditions for a lawful PES
Australian anti-discrimination law allows employers to require candidates to demonstrate they can meet the inherent requirements of the job. Pre-employment screening is the clinical mechanism for making that determination — but only when it satisfies three conditions.
After the conditional offer
Health screening must occur after a conditional offer of employment has been made. Screening candidates before an offer — even as part of a multi-stage selection process — creates disability discrimination exposure in all Australian jurisdictions. The offer must exist first. It can be conditional on satisfactory PES, but it must be made.
Calibrated to genuine inherent requirements
Every element of the screen must be traceable to a documented, genuine inherent requirement of the specific role — captured in the IROJ. A general health assessment not tied to job demands is legally indefensible. This is the single most common source of discrimination liability in Australian pre-employment screening.
Applied consistently across all candidates
The same fitness criteria must be applied to every candidate assessed for the same role. Variable standards — whether from inconsistent protocols or inconsistent clinical interpretation — create discrimination liability. The IROJ is the consistent reference standard that makes this possible.
PES components — when each applies and why
A pre-employment screen is not a fixed protocol — it is assembled from components based on the IROJ demand profile of the specific role. The table below covers the core components, when they apply, what they assess, and the key legal consideration for each.
Functional capacity evaluation
When: All roles with documented physical demands
What it assesses
Calibrated to IROJ demand category (sedentary to very heavy). Tests lifting, carrying, pushing, pulling, posture, and endurance against documented role requirements — not generic norms.
Legal consideration
Primary legal protection. Must reference IROJ demand profile to be defensible.
Musculoskeletal screen
When: Medium demand and above; any role with specific postural requirements
What it assesses
Joint range of motion, spine assessment, upper and lower limb function relevant to documented IROJ demands. May include functional movement screen for high-demand roles.
Legal consideration
Condition-specific findings must be assessed for functional impact on IROJ demands — not used as blanket exclusion criteria.
Vision assessment
When: Safety-critical roles (drivers, plant operators, healthcare); roles with specific vision requirements in IROJ
What it assesses
Snellen visual acuity, colour vision where required (electrical, transport, aviation). Calibrated to IROJ vision standard — not a generic pass/fail.
Legal consideration
Must reference the documented vision standard in the IROJ. Spectacle-corrected acuity is the standard unless uncorrected vision is an IROJ requirement.
Hearing assessment (audiometry)
When: Noise-exposed roles (85 dB LAeq or above); safety-critical communication roles
What it assesses
Baseline audiogram. Provides the pre-exposure reference point for future STS detection in ongoing health surveillance. Also identifies pre-existing hearing loss relevant to safety communication requirements.
Legal consideration
Serves dual purpose: IROJ fitness determination AND health surveillance baseline. Record retention obligation triggered from baseline.
Drug and alcohol test
When: Safety-critical roles where D&A policy applies; high-risk work licence roles; roles in mining, transport, construction where EA or principal contractor policy requires it
What it assesses
AS 4308:2023 (urine collection) or AS 4760:2019 (oral fluid collection). Chain of custody from collection through MRO review. Confirmation testing for non-negative results.
Legal consideration
Must follow AS 4308:2023 or AS 4760:2019 end-to-end to be defensible. Random testing post-employment follows the same standard.
Cardiovascular fitness assessment
When: Roles with documented cardiovascular demand in IROJ; remote/FIFO roles with limited medical access; emergency response functions
What it assesses
Resting ECG, blood pressure, submaximal exercise test where indicated. Risk stratification using AHA/ACC frameworks for high-demand roles.
Legal consideration
Must be calibrated to documented cardiovascular demands in the IROJ. General "heart check" without role demand reference has weak legal defensibility.
Psychological / cognitive screen
When: Safety-critical decision-making roles; roles with specific cognitive demands in IROJ; roles involving lone working in hazardous environments
What it assesses
Structured clinical interview or validated tool relevant to the specific cognitive demands of the role. Not a general mental health screen — calibrated to documented IROJ cognitive and decision-making demands.
Legal consideration
The most legally sensitive component. Must be clearly calibrated to specific IROJ demands. General psychological assessment without role context creates significant discrimination exposure.
Running a defensible PES — six steps
The order of these steps is not optional. Steps 1 and 2 must occur before any clinical assessment — getting the sequence wrong is the most common source of legal exposure in Australian pre-employment practice.
- 1
Obtain the IROJ
Before any candidate assessment, confirm the Inherent Requirements of the Job document for the specific role is current and signed by a qualified OHS clinician. Never conduct a PES without an IROJ — the assessment cannot be shown to be job-related without it.
- 2
Obtain conditional offer of employment
In Australia, PES must be conducted after a conditional offer of employment — not before. Screening candidates before an offer is made risks disability discrimination claims.
- 3
Obtain informed consent
Provide the candidate with a written information statement covering what is assessed, who sees the results, how long records are kept, and how to dispute a finding. Obtain signed consent before any testing.
- 4
Conduct the functional assessment
The functional assessment must be calibrated to the IROJ demand profile — testing the documented demands of the specific role, not a generic protocol. This is the primary legal protection against discrimination claims.
- 5
Apply consistent decision criteria
Apply the same fitness criteria to every candidate assessed for the same role. Variable standards create discrimination liability. The IROJ provides the consistent reference point.
- 6
Document the outcome and reasoning
Document the outcome with clinical reasoning referencing the IROJ. If a candidate is found unfit, the reasoning must be traceable to specific documented demands — not general health concerns.
Five mistakes that create discrimination liability
Screening before the conditional offer
PES conducted before a conditional offer of employment is made is direct disability discrimination in most Australian jurisdictions. The offer must come first — it can be conditional on satisfactory PES outcome, but it must exist before screening begins.
Using a generic protocol instead of the IROJ
A standard "pre-employment medical" not calibrated to the specific role demands is legally indefensible. If a candidate is declined on the basis of a health finding that is not documented as a genuine inherent requirement, the employer cannot demonstrate the decision was job-related.
Applying different standards to different candidates for the same role
Inconsistent application of fitness criteria creates discrimination liability. The IROJ provides the consistent standard — every candidate for the same role is assessed against the same documented demands.
Using PES as a general health gatekeeping mechanism
PES outcomes can only be used to determine fitness for the documented demands of the specific role. Health findings that are not relevant to any IROJ demand cannot be used to make or influence employment decisions.
Not documenting the clinical reasoning for an unfit finding
An unfit outcome without documented reasoning — referencing specific IROJ demands — is difficult to defend. The clinical record must show: which IROJ demand is affected, how the finding limits that demand, and why accommodation is not reasonably practicable.
Frequently asked questions
Is pre-employment health screening legal in Australia?
Yes — with important conditions. Australian anti-discrimination law (Disability Discrimination Act 1992, and state equivalents) allows employers to require candidates to meet inherent requirements of the job. A pre-employment health assessment is lawful when it: (1) is conducted after a conditional offer of employment, (2) is calibrated to documented, genuine inherent requirements of the specific role (IROJ), (3) applies consistent criteria to all candidates for that role, and (4) outcomes are used only to determine fitness for the documented demands — not as general health gatekeeping.
What is the difference between pre-employment screening and a medical?
A pre-employment medical is a general health assessment. A pre-employment screen is a functional assessment calibrated to the specific demands of a role. Most Australian OHS practitioners have moved from medicals to IROJ-based functional screens because medicals have weak legal defensibility — they assess general health rather than job-specific capacity. An employer who declines to hire on the basis of a general medical finding (rather than a documented job requirement) faces significant discrimination risk.
What should a pre-employment screen include for a safety-critical role?
For safety-critical roles, the screen should include: functional capacity evaluation against the IROJ physical demands (lifting, posture, endurance); vision and hearing assessment calibrated to documented requirements; musculoskeletal screen relevant to the role demands; fitness assessment for any specific safety function (confined space entry, heights, emergency response); and drug and alcohol test under AS 4308:2023 or AS 4760:2019 where the policy applies to the role. Cognitive and psychological screening may be indicated for roles with specific decision-making demands.
How long should pre-employment screening records be retained?
Retention periods vary by state and the nature of the exposure. The general principle under model WHS laws is that health surveillance records — including pre-employment screens — must be retained for the longer of: 30 years after employment ceases for workers exposed to specific hazards (asbestos, lead, noise), or 7 years for general health records. OccuSpan timestamps and stores all PES records against the worker and role profile, with automated retention policy enforcement.
OccuSpan PES Module
IROJ-calibrated PES — defensible by design
OccuSpan pre-fills PES protocols from the IROJ demand profile for each role. Consistent criteria, documented clinical reasoning, and AS 4308:2023 D&A chain of custody — all in one auditable system.
See the PES module