15.2 Worker Protection Standard Duties

Where WPS applies, and where it does not

The Agricultural Worker Protection Standard (WPS) is 40 CFR Part 170, issued under FIFRA. EPA's WPS page states the goal: reduce pesticide poisonings and injuries among agricultural workers and pesticide handlers. The rule applies to agricultural establishments that produce agricultural plants — farms, forests, nurseries, and enclosed-space production (greenhouses and similar structures) — when they use pesticides whose labeling contains Agricultural Use Requirements directing compliance with the WPS. A Colquitt County cotton and peanut farm, a peach packing-orchard operation, a south Georgia pecan grove, a tobacco transplant greenhouse, and a commercial nursery are classic WPS establishments. A Category 24 suburban lawn route and a Category 27 roadside right-of-way spray are usually not WPS agricultural establishments, even though the applicator still follows the label, Georgia records, and (for landscapes) Rule 40-21-9 posting.

Do not merge WPS with three nearby paper systems. Rule 40-21-5 is GDA application recordkeeping. Rule 40-21-9 is landscape posting for maintained turf and ornamentals. SPCC operator credentials and continuing education are a different license family. WPS information at a farm shop is for workers and handlers, not a substitute for a golf-course 8-by-10-inch notice or a contractor's two-year application log.

Workers versus handlers

WPS protects two employee roles. Mixing them up is the most common General Standards miss after "what is an AEZ."

An agricultural worker is employed to perform tasks related to the production of agricultural plants on the establishment: planting, cultivating, weeding, thinning, irrigating, harvesting, and similar hand labor among plants. After a labeled restricted-entry interval (REI) expires, the harvest crew walking a peanut field is typically in the worker role. Workers do not mix, load, or apply pesticides as part of that definition.

A pesticide handler mixes, loads, transfers, applies, or otherwise handles pesticides: cleaning application equipment, disposing of excess mix or rinsate, handling open containers, acting as a flagger, or helping with those tasks. The person measuring a WPS-labeled cotton herbicide into the tank is a handler even if that person never drives the boom. Some WPS duties attach to anyone doing listed handler tasks, including cleaning pesticide-contaminated PPE.

The same employee can be a worker in the morning and a handler after lunch. Train and equip for the task being done that hour, not for the job title on the hiring paperwork.

Annual training and Georgia Category 40

WPS pesticide safety training is not the Georgia commercial applicator exam and is not a one-time new-hire video from a decade ago. Agricultural employers must ensure that workers and handlers who need WPS training receive it using EPA-approved training materials, in a manner they can understand, before they perform worker or handler tasks, and at least once every 12 months thereafter. Handlers must be trained before they mix, load, or apply. Workers must be trained before they enter a treated area or an area that has been under an REI in the recent covered period the rule uses (generally when WPS-labeled pesticides have been used in the past 30 days).

A qualified trainer is typically a certified applicator, a person who has completed an EPA-approved WPS train-the-trainer program, or a person designated as a trainer by EPA or the state or tribal pesticide agency. GDA's category list names Category 40, Worker Protection Standard, as the subcategory for those engaged in training workers and handlers as required by EPA's Worker Protection Standard. Category 40 is a 0-hour recertification add-on on GDA's table. It does not replace Category 21 if you apply plant-agriculture RUPs, and it is not SPCC continuing education. Keep WPS training records (who was trained, who trained, date, and materials) for two years.

Application exclusion zone and REI

The application exclusion zone (AEZ) is an area surrounding outdoor pesticide application equipment while the application is happening. EPA restored the 2015 AEZ structure in a September 2024 rule. The AEZ moves with the equipment, exists only during application, and can extend off the agricultural establishment onto a road, a school ground, or a neighbor's yard. When the application ends, the AEZ ends. The treated area then remains under the label REI until that clock expires.

40 CFR 170.405 (the 2015 AEZ EPA restored in 2024) is a three-way split, not a "closer boom equals 25 feet" shortcut. The AEZ is 100 feet when the pesticide is applied by air, by airblast or air-propelled equipment, as a fumigant, smoke, mist, or fog, or as a spray with spray quality smaller than medium (ASABE). The AEZ is 25 feet only when the application is not a 100-foot method and the product is sprayed from a height greater than 12 inches from the soil or planting medium using medium or larger droplets. There is no AEZ when the application is made in a manner other than those two — including sprays from 12 inches or less with medium or larger spray quality, and many granular, soil-incorporated non-fumigant, pre-plant, at-plant, or spot applications that fit that remaining class. Read the method and boom height you are actually using; do not invert the 12-inch line.

Handler duty: do not apply so that the pesticide contacts anyone other than appropriately trained and equipped handlers involved in the application. Temporarily suspend the application if workers or other people are in the AEZ, whether they are on or off the establishment, including people in an easement. Resume only after they leave the AEZ.

Agricultural employer duty: do not allow or direct any worker or other person — other than those trained, equipped handlers — to enter or remain in an AEZ within the establishment boundaries. EPA's immediate-family exemption can allow farm owners and their immediate family to remain inside enclosed structures or homes under listed conditions. That exemption does not apply to employees or labor housing.

After the boom shuts off, REI is the separate clock before unprotected workers may enter. Early-entry work, when the label and WPS allow it at all, has its own age, training, and PPE rules. Do not treat AEZ and REI as the same circle.

Notification, posting, and central information

40 CFR 170.409 tells agricultural employers how to notify workers of entry restrictions.

• If the label requires both posting and oral notification (double notification), do both.
• Outdoor production: if the REI is greater than 48 hours, post WPS warning signs. If the REI is 48 hours or less, either post or give an oral warning (unless the label demands both).
• Enclosed-space production: if the REI is greater than 4 hours, post. If the REI is 4 hours or less, either post or give an oral warning (unless the label demands both).

Posted WPS warning signs are the familiar 14-by-16-inch design unless a listed size exception applies. Post them so they can be seen at reasonably expected entrances, no more than 24 hours before the application, keep them up during the REI, and remove or cover them before workers enter and within 3 days after the REI ends. Oral warnings must be in a language workers understand and must cover location and description of the treated area, dates and times entry is restricted, the AEZ, the REI, and the instruction not to enter during the REI. Warn workers already on the establishment before the application starts; warn workers who arrive later at the start of their work period.

Central information (40 CFR 170.311) is the WPS display, not a Rule 40-21-9 landscape sign. Display pesticide safety information (the WPS safety poster or equivalent), pesticide application information, and Safety Data Sheets. Tell workers and handlers where that display is and where decontamination supplies are. Application and hazard information must be displayed within 24 hours of the end of the application and before workers enter the treated area, and it generally remains available at least 30 days after the REI expires. Keep the underlying application and SDS information two years. A worker or handler may designate a representative in writing to obtain a copy; the employer generally has 15 days to provide it.

Decontamination: attribute the 1/4-mile rule to WPS

Exam writers love to hang the 1/4-mile distance on the wrong statute. WPS (40 CFR 170.411 for workers and 170.509 for handlers) is the source. Georgia Rule 40-21-5 does not invent a 1/4-mile wash station. Rule 40-21-9 does not. SPCC operator CE does not.

Under WPS, decontamination supplies must be located together, outside treated areas and REI areas (with a handler exception when supplies are protected from contamination), reasonably accessible, and not more than 1/4 mile from the workers or from the handler during the activity. If people are working more than 1/4 mile from the nearest place of vehicular access or from any non-treated area, supplies may be at the nearest place of vehicular access outside the treated area or REI. Mixing sites must have handler decontamination at the mix site.

Supplies include water that is safe and cool enough for washing, soap, and single-use towels. Hand sanitizers and wet towelettes do not replace soap and water. PERC-style teaching used nationwide: provide 1 gallon of water per worker and 3 gallons of water per handler at the beginning of the work period. Handler employers also provide one clean change of clothing (such as coveralls) for emergency use. When the labeling requires protective eyewear, 1 pint of eyeflush water must be immediately available to each handler. Do not draw decontamination or eyeflush water from a tank used to mix pesticides unless valves or other hardware prevent pesticide from moving back into that water.

Worker decontamination is generally required when they work in areas treated with a WPS-labeled pesticide within the past 30 days (a shorter 7-day window applies after products with REIs of 4 hours or less). That 30-day idea is WPS, not GDA landscape posting.

Emergency assistance, and who owes which duty

If there is reason to believe a worker or handler was injured or poisoned by pesticides during employment or within 72 hours of employment, the employer must promptly make transportation available to an appropriate medical facility and promptly provide treating medical personnel with the SDS, product name, EPA registration number, and active ingredient(s).

Split the hats:

Agricultural employers (owners or operators of the establishment) train their workers and handlers, keep the central display, notify and post, provide worker decontamination, provide emergency assistance, keep workers out of AEZs and REI areas on the establishment, and exchange information with any commercial pesticide handler employer they hire: location of treated areas still under an REI that commercial handlers may be in or walk within 1/4 mile of, plus entry restrictions.

Commercial pesticide handler employers train and equip their handlers, provide handler decontamination and PPE, pass the agricultural employer's treated-area information to the handler doing the work, and tell the agricultural employer — before the application — location and description of the area to be treated, timing, product identity, EPA registration number, active ingredients, REI, whether the label requires both oral warnings and posting, and other labeling safety requirements for workers or other people.

The applicator or handler making the application follows the label, wears required PPE, does not contact other people with spray or drift, and suspends when anyone other than trained, equipped handlers is in the AEZ.

A custom applicator treating a grower's cotton does not become the farm's agricultural employer for harvest-crew training just by rolling onto the field. The grower still owes worker WPS duties. The custom firm still owes handler WPS duties to its own crew. Both still exchange the information the rule lists.

Exam traps

• "The 1/4-mile wash station is a Georgia 40-21-5 record rule." Wrong. Attribute it to WPS.
• "AEZ lasts as long as the REI." Wrong. AEZ exists only during application.
• "Handlers and workers are the same WPS class." Wrong. Mixing and applying are handler tasks; weeding and harvesting are worker tasks.
• "Train once when hired, then never again." Wrong. Every 12 months, before the tasks.
• "Category 40 recert hours equal Category 21." Wrong. Category 40 is a 0-hour trainer subcategory.
• "WPS posting is the same as Rule 40-21-9 landscape signs." Wrong statutes and wrong sites.