Pesticide handler employees must always wear chemical-resistant gloves EXCEPT when ______________.

The correct choice highlights a specific scenario where pesticide handler employees are not required to wear chemical-resistant gloves. It is essential to understand that pesticide labels contain vital safety information and instructions regarding personal protective equipment (PPE) requirements. In this case, if the pesticide labeling explicitly states that gloves must not be worn, it is because the chemical formulation or the intended method of application has been deemed safe without them.

This illustrates that the safety standards set out by regulatory authorities can vary based on the nature of the pesticide being used. Labeled instructions should always be prioritized to ensure the safety of handlers. When the labeling indicates that gloves are not necessary, it assumes that there are no significant exposure risks in using the pesticide as instructed.

In contrast, situations such as mixing or loading pesticides, repairing contaminated equipment, or using specific application methods like a backpack sprayer typically involve handling or exposure to hazardous substances, warranting the use of protective gloves to minimize the risk of skin exposure to harmful chemicals. Always adhering to label directions is crucial for maintaining safety in pesticide handling practices.