ANSI and OSHA Ladders Requirements: Ensuring Workplace Safety

industrial worker climbing a ladder

Ladder safety is critical in the workplace to prevent accidents and ensure the safety of employees. Many workplace accidents are caused by improper ladder use, which can result in severe injuries and even fatalities. This is why it is crucial for employers to comply with ladder safety requirements set by regulatory bodies like OSHA and ANSI.

The Occupational Safety and Health Administration (OSHA) sets specific requirements for ladder safety in the workplace, including ladder design, inspection, and maintenance. Similarly, the American National Standards Institute (ANSI) also sets ladder safety requirements to ensure ladder safety in the workplace. ANSI's requirements are designed to complement OSHA's requirements and provide additional guidance on ladder safety.

In this article, we will discuss in detail OSHA standards for ladders and ANSI ladder requirements, as well as the components of a ladder safety program.

OSHA Ladders Requirements

OSHA ladder safety standard is divided into four main components: General Requirements for all ladders, Portable Ladders, Fixed Ladders, and Mobile Ladder Stands and Mobile Ladder Stand Platforms.

General Requirements

General OSHA ladders standard applies to all ladders used in any industry. The employer must ensure that each ladder used can support the maximum intended load. They must also maintain ladders free of any defects that may affect their safe use. Furthermore, the ladder must be placed on a stable and level surface. If the ladder is placed in an area where it could be displaced, then the employer should use a device to secure it to prevent movement. The user should always face the ladder when ascending or descending.

Portable Ladders

OSHA has specific requirements for portable ladders that must be met. The ladder must be used at a pitch no greater than 1 foot vertical to 4 feet horizontal (1:4). The ladder feet must be slip-resistant and placed on a stable base. If the ladder is used on a slippery surface, it should be secured, stabilized, or provided with slip-resistant feet.

Moreover, the ladder should not be placed in front of a door that opens towards the ladder unless the door is blocked, locked, or guarded. Workers should not use the top step of a stepladder as a step. Finally, the employer must ensure that the ladder is long enough for the job and extends at least 3 feet above the upper landing surface to which the ladder is placed.

Fixed Ladders

Fixed ladders are ladders permanently attached to a structure. OSHA standards for ladders require rungs, steps, and cleats must be constructed to prevent slipping. The ladder must be capable of supporting five times the maximum intended load. Additionally, the rungs must be equally spaced, and the ladder must extend at least 42 inches above the top of the access level.

The ladder should also be equipped with safety devices such as cages, wells, or ladder safety systems unless the ladder is used in areas where these devices would interfere with the ladder's intended use. The employer must ensure that the ladder is maintained, repaired, and replaced when necessary.

Mobile Ladder Stands and Mobile Ladder Stand Platforms

Mobile ladder stands and mobile ladder stand platforms are mobile structures designed to support a worker while working at an elevated height. OSHA requires that the ladder stand or platform must be capable of supporting at least four times the maximum intended load. The ladder stand or platform must not be moved when an employee is on it. These ladders must also have a guardrail and toeboard to protect the worker from falls. Finally, the platform must be at least 20 inches wide and 30 inches long, and it must have a surface that is slip-resistant.

ANSI Ladders Requirements

The ANSI-ASC ladder standards, on the other hand, focus more on the requirements for ladder materials, construction, design, testing, and use, as well as marking and labeling.

Ladder Materials

ANSI-ASC Ladder Standards require ladders to be constructed from materials that can withstand the weight and intended use of the ladder. These materials must also be resistant to damage from environmental factors, such as sunlight and moisture. Common ladder materials include wood, aluminum, fiberglass, and steel.

Safe Construction

Ladders must be constructed in a manner that ensures their safety and durability. ANSI requires that ladders be free from defects and that all components be securely fastened together. Ladder components must also be designed to withstand the stresses placed on them during normal use.

Designing Requirements

Ladders should be designed with the intended use in mind, and that they are capable of supporting the weight of the user and any tools or materials being carried. Ladders must also be designed to prevent slipping and tipping, and they must have appropriate rung spacing and step depth.

Test Requirements

ANSI-ASC Ladder Standards require that ladders undergo rigorous testing to ensure their safety and durability. These tests include dynamic and static load tests, as well as tests to assess the ladder's stability and resistance to bending and twisting. Ladders must also be tested for slip resistance and durability in various environmental conditions.

Care and Use

Even the safest ladder can become dangerous if not used and maintained properly. ANSI requires that ladders be used and maintained in accordance with the manufacturer's instructions. This includes proper storage, handling, and transport of ladders, including regular inspections and maintenance to ensure they are in good working condition.

Marking Requirements

ANSI-ASC Ladder Standards require that ladders be clearly marked with important information, such as the weight capacity, intended use, and manufacturer's name and address. This information helps ensure that ladders are used appropriately and that any necessary repairs or replacements are made. Such information can be written down on safety inspection tags and other appropriate equipment tags.

Components of a Ladder Safety Program

Aside from strictly adhering to OSHA standards for ladders and meeting ANSI requirements, implementing a ladder safety program is one of the best ways to ensure employee safety when working at heights.

A ladder safety program is a comprehensive set of policies, procedures, and training aimed at preventing ladder-related injuries. The following are the components of a ladder safety program:

  • Hazard identification: Identify all potential hazards associated with ladder use in the workplace and take necessary steps to eliminate or mitigate them.
  • Ladder selection: Select the appropriate ladder for the job based on the ladder's height, load capacity, and intended use.
  • Inspection and maintenance: Regularly inspect ladders to ensure they are in good working condition and maintain them to ensure they remain safe to use.
  • Training: Provide ladder safety training to employees to ensure they understand how to use ladders safely.
  • Supervision: Assign competent supervisors to oversee ladder use and ensure compliance with safety policies and procedures.

Overall, ladder safety programs are critical to ensuring employee safety when working at heights. By implementing a comprehensive ladder safety program and following OSHA standards for ladders and meeting ANSI requirements, organizations can prevent ladder-related injuries and fatalities in the workplace.

The material provided in this article is for general information purposes only. It is not intended to replace professional/legal advice or substitute government regulations, industry standards, or other requirements specific to any business/activity. While we made sure to provide accurate and reliable information, we make no representation that the details or sources are up-to-date, complete or remain available. Readers should consult with an industrial safety expert, qualified professional, or attorney for any specific concerns and questions.


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Author: Herbert Post

Born in the Philadelphia area and raised in Houston by a family who was predominately employed in heavy manufacturing. Herb took a liking to factory processes and later safety compliance where he has spent the last 13 years facilitating best practices and teaching updated regulations. He is married with two children and a St Bernard named Jose. Herb is a self-described compliance geek. When he isn’t studying safety reports and regulatory interpretations he enjoys racquetball and watching his favorite football team, the Dallas Cowboys.