Hierarchy of Controls | NIOSH (2024)

Controlling exposures to hazards in the workplace is vital to protecting workers. The hierarchy of controls is a way of determining which actions will best control exposures. The hierarchy of controls has five levels of actions to reduce or remove hazards. The preferred order of action based on general effectiveness is:

  1. Elimination
  2. Substitution
  3. Engineering controls
  4. Administrative controls
  5. Personal protective equipment (PPE)

Using this hierarchy can lower worker exposures and reduce risk of illness or injury.

Elimination

Elimination removes the hazard at the source. This could include changing the work process to stop using a toxic chemical, heavy object, or sharp tool. It is the preferred solution to protect workers because no exposure can occur.

Substitution

Substitution is using a safer alternative to the source of the hazard. An example is using plant-based printing inks as a substitute for solvent-based inks.

When considering a substitute, it’s important to compare the potential new risks of the substitute to the original risks. This review should consider how the substitute will combine with other agents in the workplace. Effective substitutes reduce the potential for harmful effects and do not create new risks.

Elimination and substitution can be the most difficult actions to adopt into an existing process. These methods are best used at the design or development stage of a work process, place, or tool. At the development stage, elimination and substitution may be the simplest and cheapest option. Another good opportunity to use elimination and substitution is when selecting new equipment or procedures. Prevention through Design is an approach to proactively include prevention when designing work equipment, tools, operations, and spaces.

Engineering Controls

Engineering controlsreduce or prevent hazards from coming into contact with workers. Engineering controls can include modifying equipment or the workspace, using protective barriers, ventilation, and more. The NIOSHEngineering Controls Database has examples of published engineering control research findings.

The most effective engineering controls:

  • are part of the original equipment design
  • remove or block the hazard at the source before it comes into contact with the worker
  • prevent users from modifying or interfering with the control
  • need minimal user input for the controls to work
  • operate correctly without interfering with the work process or making the work process more difficult

Engineering controls can cost more upfront than administrative controls or PPE. However, long-term operating costs tend to be lower, especially when protecting multiple workers. In addition, engineering controls can save money in other areas of the work process or facility operation.

Administrative Controls

Administrative controls establish work practices that reduce the duration, frequency, or intensity of exposure to hazards. This may include:

  • work process training
  • job rotation
  • ensuring adequate rest breaks
  • limiting access to hazardous areas or machinery
  • adjusting line speeds

PPE

PPE is equipment worn to minimize exposure to hazards. Examples of PPE include gloves, safety glasses, hearing protection, hard hats, and respirators. When employees use PPE, employers should implement a PPE program. While elements of the PPE program depend on the work process and the identified PPE, the program should address:

  • workplace hazards assessment
  • PPE selection and use
  • inspection and replacement of damaged or worn-out PPE
  • employee training
  • program monitoring for continued effectiveness

Employers should not rely on PPE alone to control hazards when other effective control options are available. PPE can be effective, but only when workers use it correctly and consistently. PPE might seem to be less expensive than other controls, but can be costly over time. This is especially true when used for multiple workers on a daily basis.

When other control methods are unable to reduce the hazardous exposure to safe levels, employers must provide PPE. This includes:

  • while other controls are under development
  • when other controls cannot sufficiently reduce the hazardous exposure
  • when PPE is the only control option available

Administrative controls and PPE require significant and ongoing effort by workers and their supervisors. They are useful when employers are in the process of implementing other control methods from the hierarchy. Additionally, administrative controls and PPE are often applied to existing processes where hazards are not well controlled.

Training and evaluation can help ensure selected controls are successful. Employers should correctly train workers and supervisors on how to use controls. Workers and their supervisors should evaluate controls on a regular basis. Regular evaluation can check whether controls are effective in reducing workers’ exposures and identify potential improvements.

Hierarchy of Controls | NIOSH (2024)

FAQs

Hierarchy of Controls | NIOSH? ›

The hierarchy of controls is a method of identifying and ranking safeguards to protect workers from hazards. They are arranged from the most to least effective and include elimination, substitution, engineering controls, administrative controls and personal protective equipment.

What is the hierarchy of controls in OSHA? ›

The hierarchy of controls is a method of identifying and ranking safeguards to protect workers from hazards. They are arranged from the most to least effective and include elimination, substitution, engineering controls, administrative controls and personal protective equipment.

What is hierarchy of controls explain? ›

The hierarchy of control is a system for controlling risks in the workplace. The hierarchy of control is a step-by-step approach to eliminating or reducing risks and it ranks risk controls from the highest level of protection and reliability through to the lowest and least reliable protection.

What is the hierarchy of control measures in order? ›

Hierarchy of controls

Elimination – physically remove the hazard. Substitution – replace the hazard. Engineering controls – isolate people from the hazard. Administrative controls – change the way people work.

What is an example of hierarchy of control in the workplace? ›

Common examples include mechanical guards, interlocking systems and safeguarding devices such as fences, safety mats and two-hand controls. While engineering controls aren't as protective as elimination or substitution, they still control exposure at the source of the hazard, before it comes into contact with workers.

What is the hierarchy of control in manual handling? ›

The hierarchy of control for selecting appropriate control measures for manual handling is: Avoid the need for manual handling. Reduce the load risk by using lighter weights or more stable containers. Reorganise the activity or environment to further reduce the impact on the individual(s)

What is hierarchy of controls in ISO? ›

The requirement for the hierarchy of controls is intended to provide a systematic approach to enhance occupational health and safety, eliminate hazards, and reduce or control OH&S risks. It is a widely accepted system and is used by a variety of safety organizations.

What are the three levels of hazard? ›

The approach that Cargill is taking is to focus on the top three levels of the model: Elimination, Substitution, and Engineering Controls.
...
The descriptions below provide more insight into each of the levels.
  • Elimination. ...
  • Substitution. ...
  • Engineering Controls. ...
  • Administrative Controls. ...
  • Personal Protective Equipment (PPE)

Who controls OSHA? ›

Organization. OSHA is part of the United States Department of Labor. The administrator for OSHA is the Assistant Secretary of Labor for Occupational Safety and Health. OSHA's administrator answers to the Secretary of Labor, who is a member of the cabinet of the President of the United States.

Why is PPE at the bottom of the hierarchy of controls? ›

And why is PPE at the bottom of the hierarchy of controls? It's at the bottom of the hierarchy of controls because it is effectively letting the hazard exist in the workplace. You are exposing the person, so the hazard and you are wrapping them up in some way to protect them from that hazard.

What is an example of a risk control? ›

Examples of controls may include testing, periodic internal audits or inspections, and even your training program. Your risk assessment will determine what risks are present in your company and what controls need to be placed to protect your assets.

What are work practice controls? ›

Work Practice Controls means controls that reduce the likelihood of exposure by altering the manner in which a task is performed (e.g., prohibiting recapping of needles by a two-handed technique).

Why is hierarchy of controls important? ›

The hierarchy of control creates a systematic approach to managing safety in your workplace by providing a structure to select the most effective control measures to eliminate or reduce the risk of specific hazards identified as being caused by the operations of the business.

What is risk prioritization? ›

Risk prioritization is the process of identifying all the risks to a project and then deciding which ones are the most severe, so they can be addressed first. Prioritization should be based on the likelihood of a risk and the potential harm it poses to the organization.

What is the hierarchy approach to risk awareness? ›

The hierarchy of risk control is used when undertaking risk assessment activities, to control hazards and minimise risk. Once you have calculated the level of risk, you should decide on the precautions or controls needed to reduce the risk. To control risk, you need to do everything 'reasonably practicable'.

What is the most effective measure in the hierarchy of controls? ›

Elimination, or physically removing a hazard from a workplace, is the most effective stage of the hierarchy of controls.

What is the best example of hierarchy? ›

Real-world examples of hierarchical organizations include governments, the military, and organized church systems.

What is an example of level of hierarchy? ›

Hierarchy systems rank categories from top to bottom. For example, in a typical family system, the parents have the most authority, followed by the children, then followed by the pets.

What hierarchy of control is housekeeping? ›

Where does housekeeping fit in? Housekeeping is an administrative and work practice control.

What are the hazard controls for heavy lifting? ›

HAZARD CONTROL

Clear movable objects from the route. Check for uneven terrain. Clean up spills that could affect foot traction. Fatigue If the load must be carried for a long distance, find location(s) load can be placed to allow for a rest break.

What is an example of elimination in hierarchy of control? ›

Examples of elimination control methods include: Purchasing equipment that is not noisy. Using a reach pole, where feasible, for window washing to eliminate working from heights. Removing and properly disposing of products that are stored in the workplace and are no longer being used.

What are four types of physical hazards? ›

Types of physical hazards
  • body stressing.
  • confined spaces.
  • electricity.
  • heat.
  • heights.
  • noise.
  • vibration.

How many controls are there in ISO? ›

There are 114 Annex A Controls, divided into 14 categories. How you respond to the requirements against them as you build your ISMS depends on the specifics of your organisation. A useful way to understand Annex A is to think of it as a catalogue of security controls.

What is the first principle of hierarchy of control? ›

1. Elimination. Physical removal of the hazard — this is the most effective hazard control.

What are the 5 steps of risk management? ›

You can do it yourself or appoint a competent person to help you.
  • Identify hazards.
  • Assess the risks.
  • Control the risks.
  • Record your findings.
  • Review the controls.
Apr 24, 2023

What are the three 3 hazard controls? ›

The main ways to control a hazard include:
  • Elimination: remove the hazard from the workplace.
  • Substitution: replace the hazard (e.g., hazardous products, machines, etc.) ...
  • Engineering Controls: includes designs or modifications to plants, equipment, ventilation systems, and processes that reduce the source of exposure.

What are 5 OSHA standards? ›

Examples of OSHA standards include require- ments to provide fall protection, prevent trenching cave-ins, prevent exposure to some infectious diseases, ensure the safety of workers who enter confined spaces, prevent exposure to such harmful substances as asbestos and lead, put guards on machines, provide respirators or ...

Who does OSHA not protect? ›

Those not covered by the OSH Act include: self-employed workers, immediate family members of farm employers, and workers whose hazards are regulated by another federal agency (for example, the Mine Safety and Health Administration, the Department of Energy, Federal Aviation Administration, or Coast Guard).

What is the last line of defense to prevent accidents? ›

PPE (Personal Protective Equipment) is your last line of defence against injury and must ALWAYS be worn, kept up-to-date and in good condition. PPE is a requirement on ALL active harvesting sites, where it is stated on risk assessments and/or in the site rules.

What is the last resort for controlling a hazard? ›

Remember that PPE is considered a last resort when it comes to hazard control and prevention and always refer to the hierarchy of hazard controls when planning a safety process.

Why PPE is taken as the last resort? ›

Why PPE is a last resort for health and safety. Wearing PPE naturally restricts movement, and so in this way it could be said to increase the risk of an accident occurring. However, because the risk is there already, wearing PPE reduces the risk causing injury.

What are the 4 risk management techniques? ›

What are the Essential Techniques of Risk Management
  • Avoidance.
  • Retention.
  • Spreading.
  • Loss Prevention and Reduction.
  • Transfer (through Insurance and Contracts)
Jun 22, 2022

What are 5 examples of risk? ›

Examples of Potential Risks to Subjects
  • Physical risks. Physical risks include physical discomfort, pain, injury, illness or disease brought about by the methods and procedures of the research. ...
  • Psychological risks. ...
  • Social/Economic risks. ...
  • Loss of Confidentiality. ...
  • Legal risks.

What are examples of OSHA work practice control? ›

Prohibiting recapping, removing or bending needles unless no other exists; enforcing hand washing procedures following the removal of gloves, restricting eating and drinking in work areas; and decontaminating equipment before servicing are all examples of work practice controls.

What are OSHA work practice controls? ›

controls. These are practices that reduce the possibility of exposure by changing the way a task is performed, such as appropriate practices for handling and disposing of contaminated sharps, handling specimens, handling laundry, and cleaning contaminated surfaces and items.

What is OSHA work practice controls? ›

Work practice controls are intended to reduce the likelihood of exposure by changing the way a task is performed. They include appropriate procedures for handwashing, sharps disposal, lab specimen handling, laundry handling, and contaminated material cleaning (OSHA, 2019b).

What is the lowest hierarchical level of control in the workplace? ›

Elimination is the first level in the hierarchy of control and is considered the most effective way to control a hazard. This involves completely removing the hazard from the workplace.

What is the hierarchy of controls in safety talk? ›

The Hierarchy Contains Five Items:

Substitution; Engineering controls; Administrative controls; and. Personal protective equipment.

Who created the hierarchy of controls? ›

The safety hierarchy of controls is a workplace safety guide developed by The National Institute for Occupational Safety and Health (NIOSH).

What is priority 4 risk? ›

4-6 Moderate harm – low risk of reoccurrence - Could be addressed via agency internal process/procedures e.g. disciplinary, care management or consider referral to safeguarding to be made.

What is a 5x5 risk matrix? ›

What is a 5x5 Risk Matrix? A type of risk matrix that is visually represented as a table or a grid, a 5x5 risk matrix has 5 categories each for probability (along the X axis) and impact (along the Y axis), all following a scale of low to high.

What is the most preferred action in the hierarchy of risk control? ›

Elimination is the most effective way to control a risk because the hazard is no longer present, and is the preferred way to control a hazard. If it is not reasonably practicable to eliminate the hazards and associated risks, you must minimise the risks using the substitution method.

What are the 5 hierarchy of control with examples? ›

Key points. NIOSH defines five rungs of the Hierarchy of Controls: elimination, substitution, engineering controls, administrative controls and personal protective equipment. The hierarchy is arranged beginning with the most effective controls and proceeds to the least effective.

How the hierarchy of control can be used to assess risk? ›

Hierarchy of controls

The hierarchy of control measures requires that you first aim to eliminate a risk. For example, using cordless vacuum cleaners to eliminate an identified trip hazard. If it is not reasonably practicable to eliminate a risk, you must minimise the risk.

What is the hierarchy of control discipline? ›

The 'ERICPD' mnemonic may help in agreeing a co-ordinated approach with a hierarchy of risk control measures: Eliminate, Reduce, Isolate, Control, Personal Protective Equipment, Discipline.

What are the five steps of risk management? ›

You can do it yourself or appoint a competent person to help you.
  • Identify hazards.
  • Assess the risks.
  • Control the risks.
  • Record your findings.
  • Review the controls.

What is an example of elimination control? ›

Examples of elimination control methods include: Purchasing equipment that is not noisy. Using a reach pole, where feasible, for window washing to eliminate working from heights. Removing and properly disposing of products that are stored in the workplace and are no longer being used.

What is an example of risk control? ›

Risk control, on the other hand, is a way for organizations to mitigate risks by implementing operational processes. For example, a company might control the risk of equipment failure by performing maintenance according to a preset schedule.

What is step 1 of the 5 steps to risk assessment? ›

Risk Assessment Step #1: Identify Hazards In The Workplace

Identifying and locating potential hazards is the first step in a risk assessment. Several different types of hazards should be considered.

Why is PPE at the bottom of the Hierarchy of Controls? ›

And why is PPE at the bottom of the hierarchy of controls? It's at the bottom of the hierarchy of controls because it is effectively letting the hazard exist in the workplace. You are exposing the person, so the hazard and you are wrapping them up in some way to protect them from that hazard.

What are the 4 C's of risk management? ›

4C's risk management services encompass each phase of the risk lifecycle – identification, analysis, evaluation and treatment – and integrates risk with business continuity and crisis management to ensure organisation-wide resilience.

What are the 5 R's of risk? ›

The clinician can motivate patients to consider a quit attempt with the "5 R's": Relevance, Risks, Rewards, Roadblocks, and Repetition.

What is the most safe in hierarchy of control? ›

The hierarchy of controls is used to keep employees safe from injury and illness in the workplace. The five steps in the hierarchy of controls, from most effective to least effective, are elimination, substitution, engineering controls, administrative controls and personal protective equipment.

How do you remove a hazard? ›

Fix the problem
  1. 1 Eliminate the hazard. Remove it completely from your workplace. ...
  2. 2 Substitute the hazard. Replace it with a safer alternative. ...
  3. 3 Isolate the hazard. Keep it away from workers as much as possible. ...
  4. 4 Use engineering controls. ...
  5. 5 Use administrative controls. ...
  6. 6 Use personal protective equipment (PPE)
Jun 9, 2022

Which is the first principle of the hierarchy of control? ›

1. Elimination. Physical removal of the hazard — this is the most effective hazard control.

How do you isolate a hazard? ›

Isolation controls place barriers or distance between a hazard and your workers. Physical barriers that remove the worker from contact with dusts, gases, fumes, and vapours are the most effective. having a room or area away from the work area for other tasks such as changing or eating.

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