Fall Arrest vs. Fall Restraint: Understanding the Difference
Fall arrest and fall restraint are both important approaches to protecting workers at height, but they perform fundamentally different functions.
The simplest distinction is:
Fall restraint helps prevent a worker from reaching a location where a fall can occur.
Fall arrest is designed to stop a worker after a fall has begun.
Understanding that difference is important when evaluating fall hazards, selecting equipment, determining anchorage requirements, calculating clearance, and developing a fall protection plan.
OSHA includes both personal fall arrest systems and travel restraint systems within its requirements for personal fall protection.
See OSHA 1910.140 — Personal Fall Protection Systems
What Is Fall Restraint?
A fall restraint, or travel restraint, system is configured to prevent a worker from reaching an unprotected edge or another location where a fall could occur.
Rather than arresting a fall, the system limits the worker's movement so the fall hazard cannot be reached when the system is properly configured.
Depending on the application, a restraint system may include:
The critical characteristic is not simply the equipment being used. It is how the complete system is configured.
A restraint system must actually prevent the worker from reaching the fall hazard.
OSHA defines a travel restraint system as a combination of an anchorage, anchorage connector, lanyard or other means of connection, and body support that eliminates the possibility of an employee going over an unprotected edge or experiencing a fall.
Review OSHA's Personal Fall Protection Definitions and Requirements
Common Fall Restraint Applications
Travel restraint may be appropriate for applications such as:
When workers can perform the required task without reaching the fall hazard, restraint can remove the possibility of the worker going over the edge.
What Is Fall Arrest?
A personal fall arrest system, commonly abbreviated PFAS, is designed to arrest a worker if a fall occurs.
Unlike restraint, a fall arrest system may allow the worker to enter an area where a fall is possible. The system must then arrest the fall before the worker contacts a lower level or another hazard.
OSHA defines a personal fall arrest system as a system used to arrest an employee in a fall from a walking-working surface. It consists of a body harness, anchorage, and connector.
The means of connection may include:
OSHA 1910.140 — Personal Fall Protection Systems
For construction applications, also see:
OSHA 1926.502 — Fall Protection Systems Criteria and Practices
Fall Arrest Requires Fall-Clearance Planning
One of the major differences between restraint and arrest is the need to account for fall clearance.
When a fall occurs, the system needs sufficient space to:
Required clearance depends on the equipment and system being used.
For example, an energy-absorbing lanyard and a self-retracting lifeline can result in different fall-clearance requirements.
Manufacturer instructions and application-specific requirements should therefore be reviewed when selecting and configuring a fall arrest system.
Fall Arrest Also Requires Rescue Planning
Stopping the fall is only part of the process.
If a worker remains suspended in a fall arrest system following a fall, the employer must have a method for prompt rescue or ensure that the worker is able to rescue themselves.
OSHA specifically addresses prompt rescue in both its general-industry and construction fall protection requirements.
OSHA 1910.140 — General Industry Personal Fall Protection Systems
OSHA 1926.502 — Construction Fall Protection Systems Criteria and Practices
Rescue planning should consider factors such as:
Rescue should be part of the fall protection plan before work begins rather than something developed after an incident occurs.
Fall Restraint vs. Fall Arrest
| Fall Restraint / Travel Restraint | Fall Arrest |
| Prevents the worker from reaching the fall hazard | Arrests the worker after a fall begins |
| Configured so the worker should not experience a fall | A fall may occur |
| Worker travel is intentionally restricted | Greater access to the work area may be possible |
| Focuses on preventing exposure to the edge or hazard | Requires planning for fall distance and available clearance |
| Rescue from an arrested fall normally is not the primary function | Prompt rescue following a fall must be addressed |
| Appropriate where the job can be performed without reaching the hazard | Appropriate where the work requires access to an area in which a fall is possible |
Which System Should Be Used?
The appropriate system depends on the work environment and specific hazard.
When workers can perform their work while being prevented from reaching a fall hazard, a properly configured restraint approach can prevent the fall from occurring.
However, restraint is not practical for every job.
Workers may need to:
In those situations, an appropriately designed fall arrest system may be required.
The decision should be based on the work being performed, the specific fall hazard, applicable OSHA requirements, equipment manufacturer instructions, anchorage, required worker movement, available clearance, and the overall fall protection plan.
OSHA 1910.28 — Duty to Have Fall Protection
Equipment Used in Fall Protection Systems
Fall protection equipment can include several different components depending on the application.
Full-Body Harnesses
A full-body harness is a core component of a personal fall arrest system and can also be incorporated into other fall protection configurations.
ServCorp currently offers 3M DBI-SALA harness products, including:
3M DBI-SALA ExoFit X300 X-Style Vest Harness — 1403237
For applications involving work positioning, ServCorp also lists:
3M DBI-SALA ExoFit X300 X-Style Positioning Construction Harness — 1403240
Self-Retracting Lifelines
Self-retracting lifelines, or SRLs, extend and retract as the worker moves and incorporate a braking mechanism designed to arrest a fall.
SRLs are available in different configurations for different work environments, so equipment should be selected according to the specific application and manufacturer requirements.
Learn About 3M Self-Retracting Lifelines
Energy-Absorbing Lanyards
Energy-absorbing lanyards are connecting devices designed to help manage the forces generated during fall arrest.
Lanyard selection should account for anchorage location, potential free-fall distance, fall clearance, required worker movement, and the manufacturer's intended application.
Anchors and Anchorage Connectors
Anchors and anchorage connectors provide the connection between the personal fall protection system and the structure.
The anchorage must meet the applicable requirements for the fall protection system being used.
See OSHA 1910.140 for Anchorage and Personal Fall Protection Requirements
Horizontal and Vertical Lifelines
Horizontal lifelines allow movement across a defined horizontal work area while maintaining connection to a fall protection system.
Vertical lifelines and climbing systems provide protection for certain vertical movement and climbing applications.
Rescue and Descent Equipment
Rescue and descent equipment may be required as part of a planned response following an arrested fall or for work environments requiring retrieval or controlled descent.
3M DBI-SALA Fall Protection Equipment
The 3M DBI-SALA fall protection portfolio includes equipment for a broad range of work-at-height applications.
Product categories include:
Explore 3M Fall Protection Products and Systems
ServCorp currently offers 3M DBI-SALA products and can assist customers with identifying available fall protection products for their application.
Contact ServCorp About Fall Protection Products
OSHA Fall Protection Considerations
OSHA fall protection requirements vary depending on the industry, work activity, walking-working surface, and specific hazard.
Important considerations can include:
For general industry:
OSHA 1910.28 — Duty to Have Fall Protection and Falling Object Protection
OSHA 1910.140 — Personal Fall Protection Systems
OSHA 1910.30 — Training Requirements
For construction:
OSHA 1926 Subpart M — Fall Protection
OSHA 1926.502 — Fall Protection Systems Criteria and Practices
OSHA 1926.503 — Training Requirements
Employers should evaluate the requirements applicable to their particular workplace and work activity rather than relying on a single rule or fall-height threshold for every situation.
The Bottom Line
The difference between fall restraint and fall arrest comes down to when the system protects the worker.
Fall restraint is designed to prevent the worker from reaching the fall hazard.
Fall arrest is designed to arrest the worker after a fall begins.
Both approaches can be components of an effective fall protection program, but selecting the correct system requires understanding the work environment, the hazard, required worker movement, anchorage, fall clearance, rescue requirements, equipment compatibility, and applicable safety requirements.
Looking for Fall Protection Equipment?
ServCorp offers industrial safety products, including 3M DBI-SALA fall protection equipment.
View the ServCorp 3M DBI-SALA ExoFit X300 Harness
Contact ServCorp About Fall Protection Equipment
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