Final answer:
Employees need PPE retraining when they change job roles that impact their use of PPE. New uniforms, vacations, or team-building workshops alone do not require PPE retraining unless they affect job-related PPE functions.
Step-by-step explanation:
When considering which of the following situations would require PPE retraining, it is important to understand the context in which retraining is necessary. Employees must be retrained in the use of Personal Protective Equipment (PPE) when there are changes in their job roles that would impact the way they use or require PPE. This is because new job roles can come with new risks or different types of PPE usage, necessitating a refresh or update in training to ensure the safety of the employee and compliance with regulations. An example would be when healthcare professionals move from a general care unit to an infection zone, where more stringent PPE protocols are necessary.
However, employees generally do not need retraining simply because they receive a new uniform unless that new uniform includes specific PPE that they have not previously been trained to use. Similarly, taking a vacation or attending a team-building workshop would not in themselves trigger a need for PPE retraining, unless these activities directly affect the employees' job functions related to PPE upon their return.
Therefore, the correct answer is b) They change job roles. This is when PPE retraining would most likely be necessary.