How Many First Aiders Are Required in a Workplace? The Complete Australian Guide

If Someone Collapsed at Work Today, Would Your Organisation Be Ready?

Most workplaces have at least one staff member with a first aid certificate.

But is that enough?

In many cases, the answer is no.

One of the most common compliance issues we encounter when delivering workplace training is organisations assuming they have adequate first aid coverage because one person completed a course several years ago.

The reality is that first aid requirements are based on risk, workforce size, location, shift arrangements and workplace activities.

If your only qualified first aider is on leave, attending a meeting, working remotely or simply unavailable when an incident occurs, your organisation may effectively have no first aid coverage at all.

This guide explains how many first aiders Australian workplaces should have, what legislation requires, common mistakes organisations make and how to determine the right level of coverage for your workplace.

Is It a Legal Requirement to Have Trained First Aiders?

Australian workplaces have a duty under Work Health and Safety legislation to provide:

• Adequate first aid equipment

• Appropriate first aid facilities

• Access to trained first aid personnel

• Emergency response arrangements

The exact number of trained first aiders required is not prescribed in legislation.

Instead, organisations are expected to undertake a risk assessment and determine what is reasonably required based on their circumstances.

This is where many businesses become confused.

There is no universal answer.

A five-person accounting office has very different requirements to a construction site employing 100 workers.

The Recommended First Aider Ratios

Safe Work Australia guidance provides the following recommendations.

Low-Risk Workplaces

Examples include:

• Offices

• Administrative workplaces

• Professional services

• Retail environments

Recommended:

1 trained first aider for every 50 workers

High-Risk Workplaces

Examples include:

• Construction

• Manufacturing

• Warehousing

• Agriculture

• Workshops

Recommended:

1 trained first aider for every 25 workers

Remote High-Risk Workplaces

Examples include:

• Remote construction projects

• Mining support operations

• Remote maintenance crews

• Outdoor field operations

Recommended:

1 trained first aider for every 10 workers

Why Most Businesses Should Train More Staff Than the Minimum

One of the biggest mistakes organisations make is treating guidance ratios as the exact number required.

In practice, many organisations need more.

Consider:

• Annual leave

• Sick leave

• Rostered days off

• Multiple buildings

• Multiple shifts

• Field workers

• Meetings

• Lunch breaks

A workplace with 50 employees may technically satisfy guidance with one trained first aider.

However, if that individual is absent, coverage disappears immediately.

From a risk management perspective, relying on one person is rarely a sensible strategy.

Many organisations choose to train multiple staff members to ensure adequate coverage at all times.

Factors That Determine How Many First Aiders You Need

1. Number of Workers

Larger workforces increase the likelihood of incidents.

More people means:

• More medical events

• More injuries

• More potential responders required

Workforce size should be considered alongside all other risk factors.

2. Workplace Hazards

The higher the workplace risk, the greater the first aid capability required.

Examples include:

• Working at heights

• Electrical work

• Machinery operation

• Hazardous substances

• Vehicle operations

• Outdoor work

Higher-risk environments typically require additional first aiders and potentially enhanced emergency response arrangements.

3. Geographic Location

Remote workplaces face unique challenges.

Emergency medical services may take longer to arrive.

This increases the importance of:

• Trained responders

• Emergency planning

• Communication systems

• First aid equipment

The longer emergency response times become, the more important workplace first aid capability becomes.

4. Shift Work

A common compliance oversight involves shift arrangements.

Consider a workplace with:

• Day shift

• Afternoon shift

• Night shift

One first aider cannot provide coverage across all shifts.

Each shift should have access to appropriately trained personnel.

5. Visitors, Contractors and Volunteers

Your risk assessment should not only consider employees.

Many workplaces regularly interact with:

• Contractors

• Volunteers

• Students

• Parents

• Customers

• Members of the public

These individuals may also require assistance during an emergency.

Workplace Examples

Example 1: Small Office

10 employees

Low-risk environment

Recommended approach:

• At least 2 trained first aiders

Why?

Provides redundancy if one person is unavailable.

Example 2: Primary School

40 staff members

Hundreds of students

Sporting activities

Excursions

Medical management plans

Recommended approach:

Significantly more than minimum guidance.

Schools should consider:

• Excursions

• Playground supervision

• Sporting events

• Camps

• Before and after school programs

Example 3: Construction Company

60 workers

High-risk environment

Multiple crews

Recommended approach:

Several trained first aiders across all crews and work locations.

Coverage should exist regardless of where workers are located.

Example 4: Community Sporting Club

Volunteer-based operation

Weekend competitions

Large spectator numbers

Recommended approach:

Multiple trained volunteers and readily accessible first aid equipment.

What Qualification Should Workplace First Aiders Hold?

For most workplaces, the standard qualification is:

HLTAID011 Provide First Aid

This nationally recognised course covers:

• CPR

• Cardiac emergencies

• Choking

• Bleeding control

• Fractures

• Burns

• Medical emergencies

• Asthma

• Anaphylaxis

• Shock

The qualification provides a strong foundation for workplace first aid response.

How Often Should First Aiders Renew Their Training?

This is another area frequently overlooked.

Industry best practice recommends:

CPR Refresher

Every 12 months.

First Aid Qualification

Every 3 years.

Skills deteriorate over time.

Regular refresher training helps maintain confidence and competence.

Common Compliance Mistakes

Relying on One First Aider

The most common issue.

One trained staff member is rarely enough.

Ignoring Shift Coverage

Coverage must exist whenever work is being performed.

Expired Qualifications

Many organisations discover expired certificates during audits.

No Risk Assessment

Assumptions are not a substitute for documented assessment.

Failing to Consider Contractors and Visitors

First aid planning should consider everyone who may be present.

A Practical Workplace First Aid Assessment

Ask yourself:

Workforce

• How many workers do we have?

• How many are on each shift?

Risks

• What hazards exist?

• What injuries are reasonably foreseeable?

Location

• How quickly can emergency services arrive?

Coverage

• Who responds if our primary first aider is absent?

Competency

• Are qualifications current?

Equipment

• Are first aid kits adequate?

If you struggle to answer these questions, it may be time to review your first aid arrangements.

Frequently Asked Questions

How many first aiders are required in a workplace?

The answer depends on workforce size, workplace hazards, location and operational arrangements. Safe Work Australia recommends one first aider per 50 workers in low-risk workplaces and one per 25 workers in high-risk workplaces.

Does every workplace need a trained first aider?

Workplaces must provide access to trained first aid personnel appropriate to their risks.

Do volunteers count when calculating requirements?

Yes. Volunteers should be considered during workplace risk assessments.

What happens if our only first aider is absent?

You may have insufficient coverage. This is why many organisations train multiple staff members.

Do schools need additional first aiders?

In most cases, yes. Schools face unique risks and often require broader coverage than standard workplace guidance suggests.

Is CPR training enough?

Generally no. Most workplaces require staff who hold a full Provide First Aid qualification.

Expert Insight

After delivering training across schools, councils, sporting clubs, construction companies and community organisations, one pattern appears consistently.

The organisations that manage incidents most effectively are rarely those doing the bare minimum.

They are the organisations that:

• Train multiple staff members.

• Maintain current qualifications.

• Conduct regular refreshers.

• Review risks regularly.

• Integrate first aid into broader emergency planning.

Compliance is important.

Preparedness is what makes the difference when a real emergency occurs.

How SALT Training Academy Can Help

SALT Training Academy delivers nationally recognised first aid and safety training on behalf of Allens Training Pty Ltd RTO 90909.

We work with:

• Schools

• Local government

• Sporting clubs

• Community organisations

• Small businesses

• Large employers

• Construction companies

• Recreation providers

Our team can help you:

• Determine how many first aiders your workplace requires.

• Review compliance obligations.

• Identify training gaps.

• Develop refresher schedules.

• Improve emergency preparedness.

Final Thoughts

The question is not simply:

"How many first aiders do we need?"

The better question is:

"Do we have enough trained people available to respond effectively when something goes wrong?"

For most organisations, the answer involves more than the minimum ratio.

A well-trained workforce, supported by effective planning and current qualifications, provides a safer environment for workers, visitors and the wider community.

If you're unsure whether your organisation has adequate first aid coverage, now is the ideal time to review your arrangements and ensure your team is ready when it matters most.