What Employers Can and Cannot Ask in a Medical Assessment 

As workplace safety and employee wellbeing continue to shape hiring practices across Australia, the use of a pre employment medical assessment has become increasingly common. From logistics and mining to healthcare and community services, employers rely on these assessments to determine whether candidates can safely perform the inherent requirements of a role.

However, there is often confusion around what employers are legally allowed to ask during these medical assessments. For job seekers including people with disabilities, parents returning to work, and international candidates adjusting to Australian employment standards the process can feel intrusive or uncertain.

Understanding the boundaries between lawful medical screening and discriminatory questioning is essential for both employers and employees.

Why Medical Assessments Exist in the First Place

A pre-employment medical is not designed to eliminate candidates based on health conditions. Instead, its purpose is to:

• Promote workplace safety
• Reduce injury risks
• Assess role-specific fitness
• Identify reasonable workplace adjustments

Australian employers also have obligations under the Fair Work Act 2009, Disability Discrimination Act 1992, and Work Health and Safety (WHS) laws. This means any medical questions asked must be directly relevant to the job itself.

What Employers Can Ask in a Medical Assessment

The key legal principle in Australia is relevance. Employers can ask medical questions that relate to a candidate’s ability to safely and effectively perform the inherent requirements of the role.

1. Questions About Physical Capacity

For physically demanding jobs, employers may ask whether a candidate can perform essential tasks such as:

• Lifting heavy objects
• Standing for long periods
• Operating machinery
• Repetitive movements

For example, a warehouse role in Brisbane or a construction role in regional WA may require physical assessments aligned with workplace demands.

2. Questions About Existing Injuries or Conditions That Affect Work

Employers may ask about medical conditions only if they could impact workplace safety or job performance.

This could include:

• Back injuries for manual labour roles
• Vision impairments for driving positions
• Respiratory conditions in mining or industrial environments

The focus should remain on capability, not diagnosis alone.

3. Drug and Alcohol Screening

Drug and alcohol testing is permitted in many Australian industries, particularly where safety-sensitive work is involved.

Common sectors include:

• Mining
• Transport
• Construction
• Manufacturing

These screenings help employers comply with WHS obligations and maintain safe environments.

4. Mental Health Questions Relevant to the Role

Mental health can only be discussed where it is relevant to performing the job safely and effectively.

For example:

• Emergency response roles
• High-pressure care positions
• Roles involving public safety responsibilities

Questions must remain respectful, evidence-based, and directly connected to workplace requirements.

5. Questions Around Reasonable Adjustments

Employers are allowed and often encouraged to ask whether adjustments are needed to support an employee’s success.

Examples include:

• Flexible hours
• Ergonomic equipment
• Modified duties
• Accessibility accommodations

This is particularly important for inclusive recruitment practices across Australia’s evolving workforce.

What Employers Cannot Ask During Medical Assessment

While employers have the right to ensure workplace safety, there are strict legal limits around medical questioning.

1. Irrelevant Medical History

Employers cannot ask broad or unrelated questions about your entire medical history if it has no connection to the role.

For example:

• Past illnesses unrelated to job duties
• Childhood medical conditions
• Historical surgeries with no workplace impact

Such questions may breach discrimination and privacy laws.

2. Questions Designed to Discriminate

Employers cannot use medical assessments to exclude candidates based on unfairness:

• Disability
• Pregnancy
• Mental health history
• Chronic illness
• Age-related assumptions

Under Australian law, decisions must be based on whether the candidate can perform the inherent requirements of the role with reasonable adjustments if necessary.

3. Family Medical History

In most cases, employers cannot ask about family medical conditions unless there is a very specific and lawful occupational requirement.

Questions such as:

• “Do your parents have heart disease?”
• “Is there a history of mental illness in your family?”

are generally considered inappropriate and irrelevant.

4. Questions About Future Health Risks

Employers should not speculate about what might happen in the future.

For instance:

• Potential pregnancy plans
• Future mental health concerns
• Risk of developing hereditary conditions

Australian employment law focuses on present capability, not assumptions or predictions.

Understanding “Inherent Requirements”

A major legal concept in Australian employment law is the term inherent requirements.

This refers to the essential tasks or responsibilities of a role that cannot reasonably be changed.

If a medical question does not relate to these requirements, it may not be legally justified.

Final Thoughts

A pre employment medical assessment is an important part of modern recruitment in Australia, particularly in industries where workplace safety is critical. However, there is a clear legal and ethical line between assessing job fitness and invading personal privacy.

Employers can ask questions directly linked to a role’s inherent requirements, but they cannot use medical assessments to discriminate or collect irrelevant personal information.

For candidates, understanding these boundaries creates greater confidence during the hiring process. For employers, fair and compliant assessments help build safer, more inclusive workplaces that support long-term workforce success.