01 Jul 2025

FALL ARREST vs FALL RESTRAINT: WHATS THE DIFFERENCE & WHICH ONE DO I NEED?

When working at height, safety is non-negotiable. As a professional in the height safety industry, I often get asked the same question: what’s the difference between fall arrest and fall restraint systems? It’s a great question—and an important one.

Both systems play a critical role in protecting workers, but they do so in very different ways. Choosing the right one can mean the difference between a near miss and a serious injury. In this guide, we’ll break down everything you need to know about fall arrest and fall restraint systems—without the confusing jargon.

Both systems play a critical role in protecting workers, but they do so in very different ways. Choosing the right one can mean the difference between a near miss and a serious injury.

What Is a Fall Restraint System?

A fall restraint system is designed to prevent a fall from happening in the first place. Think of it as a boundary system. It restricts a worker’s movement, ensuring they cannot physically reach a fall hazard, like the edge of a rooftop or an open platform.

Key Components:

• Harness
• Lanyard (fixed length or adjustable)
• Anchorage point

The idea is simple: keep the worker far enough away from danger that falling just isn’t possible.

What Is a Fall Arrest System?

In contrast, a fall arrest system is used when a fall could happen, but the system is designed to safely stop the worker mid-air before they hit the ground or a lower level.

This system is necessary in situations where the worker must work near or over an edge or fall hazard—where movement can't be restricted.

Key Components:

• Full-body harness
• Shock-absorbing lanyard or self-retracting lifeline (SRL)
• Anchorage point with sufficient fall clearance
• Potential rescue plan and equipment

Fall arrest systems are your last line of defense. They won’t prevent a fall, but they’ll save a life if one occurs.

Where Are Fall Restraint and Fall Arrest Systems Used?

Fall Restraint Systems Are Common In:

• Rooftop maintenance where edge access isn’t required
• Solar panel installation
• Building inspections
• HVAC servicing on flat roofs

Fall Arrest Systems Are Used When:

• Working on elevated platforms with open sides
• Steel erection or structural framework work
• Scaffold installation
• Window cleaning at height
• Telecom tower maintenance

Benefits of Fall Restraint Systems

1. Prevention-Based Safety
   By eliminating the possibility of a fall, fall restraint systems are often considered a safer option when applicable.

2. Less Wear and Tear
   Since the system doesn’t experience the stress of arresting a fall, the equipment generally lasts longer and requires less maintenance.

3. Simpler Rescue Planning
   No fall means no complex rescue procedures.

4. Ease of Use
   Workers are often more comfortable in restraint systems, and training requirements are generally less intense.

If your job site allows you to avoid fall hazards entirely, fall restraint is usually the preferred option.

Benefits of Fall Arrest Systems

1. More Flexible
   Ideal for complex environments where fall hazards can’t be fully avoided—such as when workers need to get right up to the edge.

2. Allows for Greater Mobility
   Workers have the freedom to move across a wide range of the job site while remaining protected.

3. Required by Law in Certain Situations
   Depending on local safety regulations, a fall arrest system may be mandatory in high-risk environments.

Why Choose Fall Restraint Over Fall Arrest?

If your work environment allows it, fall restraint is almost always the safer and simpler option. Why? Because it’s proactive. It eliminates the risk of a fall, rather than reacting to it.

From a business perspective, this can also mean:

• Lower PPE replacement costs
• Fewer training hours
• Simplified rescue protocols

However, restraint systems only work if the hazard can be avoided. If the job requires edge access, then fall arrest is the necessary solution.

Key Differences at a Glance

Choosing the Right System for the Job

When deciding between fall arrest and fall restraint, ask yourself:

• Can I eliminate or avoid the fall hazard?
• Is there sufficient fall clearance for a fall arrest system to activate safely?
• What are the local legal requirements?
• How experienced is the team with each system?

A comprehensive risk assessment is key. And keep in mind that sometimes a hybrid system combining both restraint and arrest capabilities may be the best solution—especially on complex job sites.

A comprehensive risk assessment is key.

Legal and Compliance Considerations

In many countries, height safety laws demand that employers implement the Hierarchy of Fall Protection Controls. This means eliminating the hazard where possible, then using fall restraint, and finally fall arrest as a last resort.

Check your local regulations, such as:

• UK Work at Height Regulations

• OSHA fall protection standards

Always ensure your system complies with relevant safety standards and that workers are trained to use it properly.

Conclusion: Fall Arrest vs Fall Restraint – Which Is Right for You?

Choosing between fall arrest and fall restraint isn’t just about ticking a safety box—it’s about protecting lives. While both systems have their place, fall restraint should be your go-to when the environment allows it. It's simpler, safer, and more proactive.

However, in high-risk or complex jobs where hazards can’t be avoided, fall arrest systems are essential. They require more planning and training but offer lifesaving protection when it matters most.

If you're unsure which system suits your site, consult with a certified height safety specialist or request a fall protection site assessment. It’s better to ask now than regret later.

Need help selecting or installing the right fall protection system?

Our team has over 30 years of hands-on experience in height safety and equipment supply. Contact us today for expert advice or consultation.

Stay safe out there.