A safety harness can look perfectly fine and still be unsafe to use.

This is one of the most common mistakes people make when working at height: assuming that a harness has a universal expiration date, like food or medicine.

The reality is different.

The service life of a fall protection harness depends on the manufacturer, model, conditions of use, storage, inspections, and—most importantly—the actual condition of the equipment.

So, how many years is a safety harness good for?

The correct answer is: there is no universal number of years that automatically determines when a harness must be removed from service.

What Is a Safety Harness?

A safety harness is a personal protective equipment (PPE) designed to distribute the forces generated during a fall across different parts of the body and allow a worker to connect to a personal fall protection system.

A complete system may include:

• Full-body harness.
• Lanyard.
• Shock absorber.
• Lifeline.
• Self-retracting lifeline.
• Connectors.
• Anchor points.

A harness should never be evaluated by itself. Its safety also depends on whether all components of the system are compatible and properly installed and used.

Does a Safety Harness Have an Expiration Date?

This is probably the most important question.

Not every safety harness has a fixed service life measured in a specific number of years.

Some manufacturers establish a recommended service life for specific products. Others state that the equipment may remain in service as long as it passes the required inspections and maintains its original characteristics.

For this reason, the manufacturer’s instructions should always be the primary reference.

The harness label, user manual, and technical documentation may specify:

• Date of manufacture.
• Model.
• Lot or identification number.
• Applicable standards.
• Inspection requirements.
• Storage conditions.
• Recommended service life, when applicable.
• Criteria for removing the equipment from service.

You should never establish a replacement date simply because someone says, “All harnesses last five years,” or any other fixed period.

What Determines the Service Life of a Safety Harness?

The actual lifespan of a harness depends on the conditions it has been exposed to.

Some of the most important factors include:

Frequency of Use

A harness used every day may experience more wear than one used occasionally.

Environmental Conditions

Sunlight, moisture, extreme temperatures, dust, chemicals, and other contaminants can affect the materials.

Storage Conditions

A harness stored properly may remain in good condition longer than one that is continuously exposed to unsuitable conditions.

Cleaning and Maintenance

Accumulated dirt or contact with certain chemicals can damage fibers and other components.

Type of Work

A harness used in an office maintenance environment is not exposed to the same conditions as one used every day in construction, mining, industrial maintenance, or other harsh environments.

When Should a Safety Harness Be Removed From Service Immediately?

This is much more important than simply counting the years.

A harness should be removed from service immediately if it shows damage that could compromise its ability to provide protection.

Examples include:

• Cuts or tears in the webbing.
• Burns.
• Broken or damaged fibers.
• Damaged stitching.
• Excessive wear.
• Deformation.
• Corrosion on metal components.
• Damaged buckles.
• Defective connectors.
• Missing or illegible labels when essential information can no longer be identified.
• Evidence of contact with chemicals that may have affected the material.

If there is any doubt about the integrity of the equipment, do not use it until a competent person determines that it is safe or the equipment is permanently removed from service.

What If the Harness Has Arrested a Fall?

This is one of the most important rules in fall protection:

A harness that has been involved in a fall should be immediately removed from service and evaluated according to the manufacturer’s instructions and the employer’s procedures.

Even if it looks fine, the forces generated during a fall may have affected components in ways that are not visible during a basic inspection.

Never think:

“It looks fine, so we can keep using it.”

When it comes to fall protection, a visual inspection may not reveal every possible form of damage.

How Often Should a Safety Harness Be Inspected?

The harness should be inspected before each use, following the manufacturer’s instructions and the procedures applicable to the workplace.

During the inspection, carefully check:

Webbing

Look for cuts, wear, abrasion, burns, contamination, deformation, or damaged fibers.

Stitching

Make sure there are no broken, loose, or damaged stitches.

Buckles

Check that they operate correctly and show no signs of deformation or damage.

Metal Components

Inspect hooks, D-rings, connectors, and other components for deformation, corrosion, cracks, or excessive wear.

Labels

Identification and safety information should remain legible.

If the manufacturer requires periodic inspections by a competent person, they must be performed according to the specified frequency.

How Do You Know If a Safety Harness Is Still Safe?

There is no single visual test that can guarantee a harness is safe.

The evaluation should consider:

1. The manufacturer’s instructions.
2. The equipment’s history.
3. The conditions under which it has been used.
4. Inspection results.
5. Any damage or contamination.
6. Whether the harness has arrested a fall.
7. Applicable workplace safety procedures.

If the harness’s history is unknown or there are concerns about its condition, the safest approach is to remove it from service until it can be properly evaluated.

How Should a Safety Harness Be Stored?

Proper storage also plays an important role in preserving the equipment.

As a general rule, a harness should be kept:

• Clean.
• Dry.
• Protected from direct sunlight.
• Away from heat sources.
• Away from chemicals.
• Protected from objects that could cut or damage it.
• In a location where it will not be unnecessarily compressed, folded, or deformed.

Always follow the manufacturer’s specific instructions, particularly regarding cleaning and storage.

Can You Wash a Safety Harness?

In many cases, safety harnesses can be cleaned according to the manufacturer’s instructions.

However, cleaning products should never be selected at random.

Certain chemicals can damage synthetic fibers or affect other components of the equipment.

Before cleaning a harness, consult the manufacturer’s manual and use only the recommended cleaning methods.

What Standard Applies to Safety Harnesses?

The applicable standard depends on the country and market where the equipment is being used.

In the United States, for example, fall protection systems used in certain workplaces are regulated by OSHA, while specific products may be manufactured according to standards such as ANSI/ASSP Z359, depending on the equipment and its intended application.

Other countries may have different national regulations or international standards.

Therefore, it is not correct to assume that a single standard applies to every safety harness used anywhere in the world.

The equipment must comply with the legal and technical requirements applicable to the location where it will be used.

So, When Should a Safety Harness Be Replaced?

The answer can be summarized in four main situations:

1. When the manufacturer specifies a service life and that period has been reached.
2. When the equipment shows damage or wear that could compromise its safety.
3. When it has been involved in a fall or another event that could have affected its integrity.
4. When you cannot demonstrate that the equipment is in safe working condition.

That is why the question should not simply be:

“How old is this harness?”

The better question is:

“Does this harness still meet the conditions required to protect the worker?”

Conclusion: Harness Safety Is Not Measured Only in Years

A harness is not automatically safe simply because it is new, nor does it necessarily become unsafe just because a certain number of years have passed.

Its condition depends on its design, manufacturer, use, maintenance, storage, inspections, and history.

Before climbing onto a platform, tower, structure, or any location where a fall hazard exists, take a few minutes to inspect your equipment.

An inspection can take minutes. A fall can change a life forever.

When it comes to fall protection, the safest decision is always the simplest one:

If you have doubts about fall protection equipment, do not use it. Remove it from service and have it properly evaluated.

Because when we talk about fall protection, we are not simply inspecting equipment—we are protecting a life.