Top 5 Workplace Safety Hazards (And How to Control Each One)

The five types of workplace safety hazards are chemical, physical, ergonomic, biological, and psychosocial. Every workplace contains at least one. Most contain all five.

These categories are recognised globally by OSHA, HSE, Safe Work Australia, and EU-OSHA. They apply to manufacturing plants, construction sites, offices, and healthcare facilities alike.

This guide covers what makes each hazard dangerous and the specific controls safety teams use to manage them.

The 5 Types of Workplace Safety Hazards

Hazard 1: Chemical Hazards

What Is It?

A chemical hazard is any substance that can harm the body through inhalation, skin contact, or ingestion. Chemical hazards exist across manufacturing, healthcare, cleaning services, and offices.

Common examples include solvents, acids, flammable liquids, airborne dusts, fumes, and volatile organic compounds (VOCs). Even a routine office cleaning product can cause long-term respiratory damage with repeated exposure.

How to Control It

• Build and maintain a complete chemical inventory for every substance on site.
• Keep a current Safety Data Sheet (SDS) for each chemical. An SDS covers hazard identification, safe handling, storage, and emergency response across 16 standardised sections.
• Apply the hierarchy of controls: eliminate the chemical first, substitute with a safer option, add engineering controls like ventilation, then use PPE as a last resort.
• Train workers on substance-specific safe handling before they begin work.
• Review SDS documents whenever a supplier changes a formulation or regulations are updated.

Hazard 2: Physical Hazards

What Is It?

Physical hazards are environmental conditions that cause injury without any chemical interaction. They are the most visible hazard category and often the most preventable.

Common examples include slips, trips, and falls (the leading cause of workplace injuries globally), noise above 85 decibels, temperature extremes, and contact with unguarded machinery.

How to Control It

• Inspect workplaces regularly and fix slip, trip, and fall risks immediately.
• Install machine guards and enforce lockout/tagout (LOTO) procedures for all equipment maintenance.
• Monitor noise levels and provide hearing protection where thresholds are exceeded.
• Implement heat and cold stress management programs for at-risk roles.
• Ensure adequate lighting in all work areas, including storage and transit zones.

Hazard 3: Ergonomic Hazards

What Is It?

Ergonomic hazards develop slowly. A worker lifting incorrectly dozens of times per shift will rarely report an injury immediately. By the time a musculoskeletal disorder (MSD) is diagnosed, it is often serious and expensive to treat.

Common examples include repetitive motions, awkward postures, manual handling of heavy loads, prolonged sitting, and poorly designed workstations. These hazards affect office workers and warehouse staff equally.

How to Control It

• Conduct ergonomic assessments for every role involving repetitive tasks or manual handling.
• Redesign workstations so workers maintain neutral body positions.
• Introduce job rotation to reduce strain on specific muscle groups.
• Train workers on correct manual handling techniques at induction and revisit regularly.
• Use mechanical aids such as trolleys and lift assists to reduce physical load.

Hazard 4: Biological Hazards

What Is It?

Biological hazards involve exposure to living organisms or their byproducts that can cause illness or disease. Healthcare workers, agricultural workers, laboratory staff, and food processing employees face elevated biological risk daily.

Common examples include bacteria, viruses, blood-borne pathogens such as hepatitis B, fungi, mould, and animal-derived allergens. The COVID-19 pandemic confirmed that biological hazards affect retail, logistics, and office environments too.

How to Control It

• Identify and classify all biological agents in the workplace using recognised occupational exposure standards.
• Use engineering controls appropriate to the risk, such as biosafety cabinets, negative pressure rooms, and HEPA-filtered ventilation.
• Set decontamination and waste disposal procedures specific to the biological agents involved.
• Provide appropriate PPE including gloves, masks, and face shields matched to the level of biological risk.
• Maintain vaccination programs where relevant, such as hepatitis B vaccination for healthcare workers.

Hazard 5: Psychosocial Hazards

What Is It?

Psychosocial hazards are the most overlooked category in workplace safety. They leave no visible injuries, but their impact on health, productivity, and retention is measurable.

Common examples include excessive workload, poor management, workplace bullying and harassment, shift work without adequate recovery, and job insecurity. A fatigued worker makes errors. A burned-out team cuts corners on safety.

How to Control It

• Assess workloads regularly and address resourcing gaps before staff reach burnout.
• Establish confidential reporting channels for bullying, harassment, and workplace violence.
• Train managers to recognise early signs of psychological distress in their teams.
• Review shift schedules to ensure adequate rest between work periods.
• Build a safety culture where workers feel safe raising concerns without fear of reprisal.

How to Document and Manage All Five Hazards

Identifying a hazard is only the first step. Every hazard must be documented, assessed, controlled, and reviewed.

1. Identify hazards through inspections, incident reports, and worker consultation.
2. Assess risk by evaluating the likelihood and severity of potential harm.
3. Control hazards using the hierarchy of controls, starting at the source.
4. Document every hazard, control measure, and review date in a central register.
5. Review after any incident, regulatory change, or process update.

For chemical hazards, every substance must have a current SDS on file. Outdated or missing SDS records are among the most common compliance failures during workplace inspections. Tools like SDS Manager automate SDS updates and distribution so documentation stays compliant.

Key Takeaways

The five universal workplace safety hazards are chemical, physical, ergonomic, biological, and psychosocial. They appear in every industry and every business size. Each requires structured identification, documentation, and control.

Frequently Asked Questions

What are the 5 types of workplace safety hazards?

Chemical, physical, ergonomic, biological, and psychosocial. These are recognised by OSHA, HSE, Safe Work Australia, and EU-OSHA across all industries.

What is the hierarchy of controls?

From most to least effective: elimination, substitution, isolation, engineering controls, administrative controls, then PPE.

How often should hazard assessments be reviewed?

At minimum annually, and after any incident, process change, new substance introduction, or regulatory update.

What is a Safety Data Sheet (SDS)?

A standardised 16-section document covering hazard identification, safe handling, storage, and emergency response for a chemical. Employers must keep current SDS records accessible to all workers.

Are chemical hazards only relevant in industrial workplaces?

No. Offices, schools, and retail environments all contain chemical hazards. Cleaning products and printer toner both require SDS documentation under GHS-aligned regulations.