Which of the following is not a requirement for respiratory protection on the job?

Wearing gloves at all times is not a requirement for respiratory protection specifically. In the context of respiratory protection, the focus is primarily on ensuring that the respiratory devices fit properly and function effectively, which directly impacts the safety of the worker in environments where asbestos or other hazardous materials are present.

Fit testing is essential to ensure that the mask or respirator creates a proper seal around the face. Trimmed beards are often necessary for a snug fit of the respirator, as facial hair can compromise the effectiveness of the seal. Proper training on the use of respiratory devices is also critical, as workers need to understand how to correctly wear, maintain, and handle their equipment to maximize safety. While gloves are important in protecting workers from exposure to hazardous materials, they are not a specific requirement linked directly to respiratory protection protocols.