Worker Protection Standard
The Worker Protection Standard (WPS) is a federal regulation issued by the U.S. Environmental Protection Agency (EPA) and enforced in Colorado by the Colorado Department of Agriculture. WPS applies whenever a pesticide is used in the production of agricultural plants that has an “Agricultural Use Requirements” section on the product label. The Quick Reference Guide to the 2015 WPS offers information on the important changes as well as references to the published regulation.
Agricultural Use Requirements
The Worker Protection Standard (WPS) provides specific protections for:
- Agricultural workers – individuals employed to perform tasks related to the production of agricultural plants, such as harvesting, planting, and cultivating.
- Pesticide handlers – individuals employed to mix, load, or apply pesticides used in agricultural plant production or perform other tasks involving direct pesticide exposure.
If you employ agricultural workers or handlers, own or manage an agricultural establishment, operate a commercial (for-hire) pesticide handling establishment, or work as a crop advisor, review the following guidelines to ensure compliance with the following:

Figure 1. Example of an “Agricultural Use” box, commonly found on pesticide labels.
WPS Compliance
The WPS requires employers to protect two main types of agricultural employees: workers and handlers. Additionally, the WPS includes provisions to safeguard other individuals present during pesticide applications, such as non-worker/handler employees, family members, customers, government officials, and bystanders.
Most employers who hire individuals for agricultural work must comply with the WPS. However, there are exemptions for owners of agricultural establishments and their immediate family members from certain requirements (see below).
Non-compliance with the WPS can lead to significant penalties under FIFRA. While specific fines and penalties can vary, it’s crucial to understand that both civil and criminal penalties are possible, especially for knowing violations. For detailed information on potential penalties, refer to the EPA’s enforcement guidelines.
For comprehensive guidance on complying with the WPS, please consult the EPA’s How to Comply manual and WPS website.
If you have further questions, contact Neal Kittleson at CDA (303-869-9059 or email) or CEPEP (970-491-6027 or email).
Agricultural Employers
If you own, or are responsible for the management or condition any of the following types of businesses which use pesticides for the production of agricultural plants, and employ workers or handlers, you must comply with the WPS:
- Farms
- Forests
- Nurseries
- Greenhouses
Note: If an agricultural establishment hires or contracts agricultural workers through a labor contractor, the establishment is responsible for WPS compliance, not the labor contractor.
Excemptions for Agricultural Owners and Immediate Family Members
Certain requirements from the WPS are exempted from owners of agricultural establishments and members of their immediate family, including:
- children (including step-children and foster children)
- parents (including step-parents and foster parents)
- siblings
- spouses
- in-laws
Important Considerations:
- No agricultural establishments that use WPS-labeled pesticide products are completely exempt from the WPS requirements,
- Owners/agricultural employers must provide full WPS protections for workers and handlers who are not in the owners’ immediate families, and
- Owners and their immediate family members that qualify for the exemption must comply with some of the WPS requirements.
More information on these exemptions can be found in Chapter 6 of the How to Comply manual.
Labor Contractors
Under the WPS, a labor contractor is a person, other than a commercial pesticide handler, who employs workers or handlers to perform tasks on an agricultural establishment on behalf of an agricultural employer or a commercial pesticide handler employer.
While a labor contractor may be assigned certain WPS responsibilities, such as providing pesticide safety training, the ultimate responsibility for WPS compliance rests with the agricultural employer or commercial pesticide handler employer—not the labor contractor.
Commercial Establishments
If you operate a business where you or your employees apply pesticides used in the production of agricultural plants on any of the establishments listed above, you must comply with the Worker Protection Standard (WPS). For more details on your responsibilities, refer to Chapter 5 of the How to Comply manual.
Note: If your employees are licensed commercial pesticide applicators, you are not required to provide WPS handler pesticide safety training. However, you must still comply with all other WPS requirements for Commercial Pesticide Handling Establishments.
Crop Advisors
If you operate a business where you or your employees act as crop consultants or crop scouts—assessing pest numbers or damage, pesticide distribution, or the status, condition, or requirements of agricultural plants—you must comply with the WPS.
The WPS does not require a “crop advisor” to have specific certification or training to be recognized as a crop advisor. However, certain WPS exemptions apply only to certified crop advisors.
Non-certified crop advisors must be provided with the same WPS protections required for workers or handlers, depending on the tasks they perform. The crop advisor employer—including self-employed crop advisors—is responsible for ensuring compliance with all WPS protections for non-certified crop advisors.
For more information on exemptions and exceptions for crop advisors, refer to Chapter 6 of the How to Compl manual.
How to Comply with WPS
To comply with the Federal Worker Protection Standard (WPS), employers must implement specific measures to safeguard agricultural workers and pesticide handlers from pesticide exposure. Key compliance requirements include:
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Provide annual pesticide safety training to workers and handlers before they engage in tasks that could expose them to pesticides.
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Display pesticide safety information at a central location accessible during work hours.
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Supply personal protective equipment (PPE) to handlers and ensure its proper use and maintenance.
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Provide decontamination supplies, such as water, soap, and towels, for routine washing and emergency decontamination.
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Enforce restricted-entry intervals (REIs) by preventing workers from entering treated areas until the specified time has elapsed after pesticide application.
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Establish application exclusion zones (AEZs) during pesticide applications to protect workers and others from exposure.
Compliance with these regulations is not only a legal obligation but also essential for protecting the health and safety of agricultural workers and handlers.

Figure 2. Gempler’s Danger Pesticide Keep Out sign
Information
Ensuring that your workers are well-informed about pesticide safety is crucial for their protection and to minimize your liability as an employer. The Environmental Protection Agency’s (EPA) Worker Protection Standard (WPS) mandates several key requirements to safeguard agricultural workers and pesticide handlers:
- Pesticide Safety Training must be provided to both pesticide handlers and agricultural workers. This training should take place annually and before they perform any tasks that could expose them to pesticides. The EPA establishes specific content requirements for this training.
- Pesticide Safety Posters must be displayed in a central location accessible to all workers and handlers during their work hours. This poster should either be developed by the EPA or contain specific information outlined in the EPA’s guidelines. EPA-approved pesticide safety training materials are available on the Pesticide Educational Resources Collaborative website.
- Pesticide Application and Hazard Information must be maintained in a central location, including pesticide application records and Safety Data Sheets (SDS) for each pesticide used. This information must be accessible to workers and handlers during work hours and retained on the establishment for two years. Upon request, it must be provided to employees, medical personnel, or the employee’s designated representative.
- Notification of Treated Areas is required to prevent inadvertent pesticide exposure. You must inform workers about treated areas by posting warning signs or providing oral notifications, as specified by the pesticide label requirements.
- Information Exchange between commercial pesticide handler employers and agricultural employers is essential to ensure all parties are aware of potential hazards and can take necessary precautions.
By adhering to these WPS requirements, you not only comply with federal regulations but also play a vital role in protecting the health and safety of your workers.
Protection
To ensure the safety of agricultural workers and compliance with the Environmental Protection Agency’s (EPA) Worker Protection Standard (WPS), employers are required to implement the following measures:
- Exclusion from treated areas:
- Prohibit workers and others from entering areas during pesticide applications.
- Enforce the Application Exclusion Zone (AEZ) within the boundaries of the agricultural establishment during pesticide applications.
- Restrict entry to areas under a Restricted-Entry Interval (REI), with limited exceptions.
- Enforce age restrictions: Ensuring that pesticide handlers and early-entry workers (those entering treated areas before the REI expires) are at least 18 years old.
- Safe Application Practices: Prohibit handlers from applying pesticides in a manner that could expose workers or others.
- Handler Protections: Provide protections for handlers during pesticide tasks, including monitoring when handling highly toxic substances.
- Personal Protective Equipment (PPE):
- Supply, maintain, and ensure the correct use of PPE as specified on the pesticide labeling.
- Implement enhanced protections for the use of respirators, including medical evaluations, fit testing, and training.
- Early-Entry Worker Protections: Safeguard early-entry workers performing permitted tasks in treated areas during an REI, including providing special instructions and ensuring proper use of PPE.
Mitigation
To minimize the risk of pesticide exposure and comply with the Environmental Protection Agency’s (EPA) Worker Protection Standard (WPS), employers are required to implement the following measures:
- Decontamination Supplies:
- For Workers: Provide at least 1 gallon of water per worker at the beginning of each work period for routine washing and emergency decontamination. Additionally, supply soap and clean towels.
- For Handlers: Ensure that each handler has at least 3 gallons of water at the beginning of each work period to allow for thorough washing in case of emergency. Also, provide soap, clean towels, and a clean change of clothing, such as coveralls.
- Emergency Assistance:
- Transportation: If a worker or handler experiences pesticide exposure or exhibits related symptoms, promptly provide transportation to an emergency medical facility.
- Information Provision: Offer detailed information about the pesticide involved, including the product name, EPA registration number, active ingredients, and circumstances of the exposure, to the affected individual or medical personnel. Supplying the pesticide label and Safety Data Sheet (SDS) is advisable.
- Eyewash Supplies:
- For handlers using pesticides that require protective eyewear, ensure that an eyewash system is immediately accessible. This includes having at least 1 pint of water available for emergency eye flushing.
WPS Training Requirements
Under the 2015 revisions to the Worker Protection Standard (WPS), the following requirements were implemented:
- Effective January 2, 2018, pesticide safety training for workers and handlers must include additional topics to enhance safety and awareness.
- Training must be conducted in a manner that is understandable to the participants and held in locations free from distractions.
- Individuals conducting the training must be qualified, either by holding a pesticide applicator’s license or by completing an EPA-approved train-the-trainer course, and must use EPA-approved WPS training materials. PERC WPS training materials
- During training sessions, including when videos are shown, the trainer must be physically present to answer any questions that may arise.
- Employers are required to maintain records of all training sessions for a period of two years following their completion. While no specific form is mandated, a sample verification form that meets WPS requirements is available for use.
The Worker Protection Standard (WPS) training course satisfies the training requirements outlined in the Colorado Pesticide Applicators’ Act, specifically sections 35-10-109 (2)(a) and (2)(b) of the Colorado Revised Statutes, for limited commercial and public applicators who do not possess a Colorado Department of Agriculture pesticide applicator license. Non-licensed limited commercial and public applicators are mandated to complete this training within three years prior to any pesticide application.
Additional details on this requirement are available in Part 16 of the Rules and Regulations Pertaining to the Administration and Enforcement of the Pesticide Applicators’ Act.
Furthermore, this training program can be utilized to fulfill 2.5 hours of commercial applicator technician training, as stipulated in Part 5 of 8 CCR 1203-2, in theRules and Regulations Pertaining to the Administration and Enforcement of the Pesticide Applicators’ Act.
Training Protects Employees!
While training for workers and handlers is the law, it is also the best way to ensure that your workers are not exposed to pesticides. Protect yourself by protecting them.
- To find a qualified Trainer, check the list of WPS Worker/Handler Pesticide Safety Training Providers.
- To become qualified as a Trainer of workers and handlers, you can take the online PERC Train-the-Trainer online course.
This web site cannot give you all the information you need to comply with the WPS. Please consult EPA’s How to Comply with WPS and WPS website for full details.
The Pesticide Educational Resources Collaborative (PERC) is a cooperative agreement between EPA’s Office of Pesticide Program and University of California – Davis Extension, collaborating with Oregon State University. This site maintains a list of resources for use in training Workers and Handlers. PERC Training Resources.
When Training is Required
All workers must be trained before working in any field where a WPS-labeled pesticide has been applied within the last 30 days of the REI expiring. Handlers must be trained before any handling tasks. You are not required to conduct pesticide safety training if the worker or handler:
- Is currently a certified applicator of restricted-use pesticides
- Is currently trained as a handler who works under the supervision of a certified pesticide applicator
- Is certified as a crop advisor by a program acknowledged as appropriate in writing by EPA, or a State or Tribal agency responsible for pesticide enforcement. For more information, contact Colorado Certified Crop Advisor Program
There is no grace period for WPS training!
The agricultural employer must ensure that WPS training is completed within the last 12 months before:
- Any worker enters a treated area on an agricultural establishment where, within the last 30 days, a WPS-labeled pesticide product has been used or a REI for such pesticide has been in effect.
- Any handler conducts any handling task.
Training must be conducted every 12 months, with the ‘clock ticking’ at the end of the month in which training was provided.
Information for Trainers and Employers
The person who conducts worker or handler training must:
- Currently be a certified applicator of restricted-use pesticides (in any category of certification), or
- Currently be designated as a trainer of certified pesticide applicators, handlers, or workers by the EPA or the state, or tribal agency having jurisdiction, or
- Have completed an EPA-approved pesticide safety train-the-trainer program for trainers of workers.
Trainers of workers or handlers must:
- Use EPA-approved training materials,
- Present the training orally from written materials or audio visually,
- Present the information in a manner that the trainees can understand, using a translator if necessary,
- Be present at all times during the training to respond to trainees’ questions, and
- Ensure training quality by providing an environment conducive to training that is reasonably free of distractions.
- Maintain a training verification record for 2 years. There is no specific form required but one that meets the requirements is available here: WPS-Verification Pesticide Safety Training form for Employees
Employers must comply with the following when providing training:
- Provide training in a manner that the workers or handlers can understand, using a translator if necessary.
- Present training using EPA-approved materials either orally from written materials or audio-visually.
- Keep records of worker or handler training for 2 years.
- Make training records available to employees upon request.
Training for agricultural workers is required before they enter into treated areas where a WPS-labeled pesticide has been applied in the last 30 days or a REI for such pesticide has been in effect.
Training for All Workers
Training for workers must include the following information:
- The agricultural employer must inform workers and handlers, in a manner they understand, about the location of the following on the establishment:
- Pesticide safety information
- Pesticide application and hazard information, and
- Decontamination supplies.
- Worker training materials must be approved by EPA and must include, at a minimum, all of the following topics
- The responsibility of agricultural employers to provide workers and handlers with information and protections designed to reduce work-related pesticide exposures and illnesses. This includes:
- Ensuring workers and handlers have been trained on pesticide safety,
- Providing pesticide safety and application and hazard information, decontamination supplies and emergency medical assistance,
- Notifying workers of restrictions during applications and on entering pesticide treated areas, and
- Informing a worker or handler that they may designate in writing a representative to request access to pesticide application and hazard information.
- How to recognize and understand the meaning of the posted warning signs used for notifying workers of restrictions on entering pesticide treated areas on the establishment.
- How to follow directions and/or signs about keeping out of pesticide treated areas subject to a REI and application exclusion zones.
- Where and in what forms pesticides may be encountered during work activities, and potential sources of pesticide exposure on the agricultural establishment. This includes exposure to pesticide residues that may be on or in plants, soil, tractors, application and chemigation equipment, or used PPE, and that pesticides may drift through the air from nearby applications or be in irrigation water.
- Potential hazards from toxicity and exposure that pesticides present to workers and their families, including acute and chronic effects, delayed effects, and sensitization.
- Routes through which pesticides can enter the body.
- Signs and symptoms of common types of pesticide poisoning.
- Emergency first aid for pesticide injuries or poisonings.
- Routine and emergency decontamination procedures, including emergency eye flushing techniques, and if pesticides are spilled or sprayed on the body to use decontamination supplies to wash immediately or rinse off in the nearest clean water, including springs, streams, lakes or other sources if more readily available than decontamination supplies, and as soon as possible, wash or shower with soap and water, shampoo hair, and change into clean clothes.
- How and when to obtain emergency medical care.
- When working in pesticide treated areas, wear work clothing that protects the body from pesticide residues and wash hands before eating, drinking, using chewing gum or tobacco, or using the toilet.
- Wash or shower with soap and water, shampoo hair, and change into clean clothes as soon as possible after working in pesticide treated areas. Potential hazards from pesticide residues on clothing.
- Wash work clothes before wearing them again and wash them separately from other clothes.
- Do not take pesticides or pesticide containers used at work to your home.
- Safety data sheets provide hazard, emergency medical treatment and other information about the pesticides used on the establishment they may come in contact with.
- The responsibility of agricultural employers to do all of the following:
- Display safety data sheets for all pesticides used on the establishment.
- Provide workers and handlers information about the location of the safety data sheets on the establishment.
- Provide workers and handlers unimpeded access to safety data sheets during normal work hours.
- The rule prohibits agricultural employers from allowing or directing any worker to mix, load or apply pesticides or assist in the application of pesticides unless the worker has been trained as a handler.
- The responsibility of agricultural employers to provide specific information to workers before directing them to perform early-entry activities. Workers must be 18 years old to perform early-entry activities.
- Potential hazards to children and pregnant women from pesticide exposure.
- Keep children and nonworking family members away from pesticide treated areas.
- After working in pesticide treated areas, remove work boots or shoes before entering your home, and remove work clothes and wash or shower before physical contact with children or family members.
- How to report suspected pesticide use violations to the State or Tribal agency responsible for pesticide enforcement.
- The rule prohibits agricultural employers from intimidating, threatening, coercing, or discriminating against any worker or handler for complying with or attempting to comply with the requirements of this rule, or because the worker or handler provided, caused to be provided or is about to provide information to the employer or the EPA or its agents regarding conduct that the employee reasonably believes violates this part, and/or made a complaint, testified, assisted, or participated in any manner in an investigation, proceeding, or hearing concerning compliance with this rule.
- The responsibility of agricultural employers to provide workers and handlers with information and protections designed to reduce work-related pesticide exposures and illnesses. This includes:
- Early-entry workers must be currently trained as a WPS worker before entering a treated area during an REI. For an agricultural employer to direct a worker to perform activities in a treated area where a REI is in effect, they must:
- Ensure that any early-entry worker is at least 18 years old.
- Give instructions to early-entry workers. Prior to early entry, give each early-entry worker all of the following information orally and in a manner that the worker can understand:
- Location of early-entry area where work activities are to be performed.
- Pesticide(s) applied.
- Dates and times that the REI begins and ends.
- Which exception is the basis for the early entry, and a description of tasks that may be performed under that exception.
- Whether contact with treated surfaces is permitted under the exception.
- Amount of time the worker is allowed to remain in the treated area.
- PPE required by the pesticide product labeling for early entry.
- Location of the pesticide safety information (safety poster).
- Location of the decontamination supplies required for early-entry workers.
- Read the pesticide label. Ensure that each early-entry worker either has read the applicable pesticide product labeling or has been informed, in a manner that the worker can understand, of all labeling requirements and statements related to human hazards or precautions, first aid and user safety.
Additional requirements for early-entry workers are found in Chapter 3 of the How To Comply Manual.
Training for Pesticide Handlers
Handlers must be trained before they do any type of handling work. The following is a review of the key requirements of WPS training for handlers:
- There is no grace period for WPS training!
- Before any handler performs any handler task, the handler employer must ensure that each handler has completed WPS training within the last 12 months, unless the handler is currently:
- Certified as an applicator of restricted-use pesticides, or
- Certified or licensed as a crop advisor by a program acknowledged as appropriate in writing by EPA or the State or Tribal agency responsible for pesticide enforcement.
- Train handlers every 12 months. Only qualified trainers (described in Chapter 2) may provide training and must be present during the entire training program to respond to questions.
- Provide training in a language or manner the handlers can understand, such as using a translator.
- Present training using EPA-approved materials either orally from written materials or audio-visually.
- Keep training records for 2 years.
- Provide training records to handler employees upon request
In addition to providing the WPS handler training and protections covered in Chapter 2 of the How to Comply Manual, the handler employer must also provide handlers with the information below, in a manner they can understand, before they perform any handler activity.
- Labeling information – The handler must either read, or be informed of, all sections of the pesticide product labeling applicable to the safe use of the pesticide, including label use directions and restrictions. The handler must be given this information in a manner they can understand. The labeling must be available to the handler at all times during handler activities.
- Application-specific information – Handlers must be made aware of any entry restrictions, AEZs and REIs that may apply to the activities being performed by the handler.
- Pesticide application equipment – A handler employer must ensure that:
- Handlers are instructed in the safe operation of equipment used to mix, load, transfer, or apply pesticides before they use the equipment.
- Each day before using any equipment to mix, load, transfer or apply pesticides, the equipment is inspected for leaks, clogged nozzles, worn or damaged parts and equipment is repaired or replaced before it is used.
If the pesticide label requires the handler to wear a respirator, WPS requires:
- an initial medical evaluation of the handler,
- annual fit testing, and
- annual training on use/maintenance of the respirator.