During what event do workers have the right to speak privately with an inspector according to OSHA regulations?

The correct choice is the inspection, as OSHA regulations specifically allow workers to communicate privately with an inspector during this process. Inspections are conducted by OSHA to ensure that workplaces adhere to safety and health standards. During these inspections, workers can express concerns or report violations without fear of retaliation, ensuring their rights and safety are prioritized. This provision is crucial for revealing unsafe conditions and practices that might not be fully apparent to the inspector during a group assessment.

The other events listed do not provide the same context for private communication. Investigations typically follow an incident or complaint and may not involve direct interaction with all workers. Hearings are more formal and usually focus on legal disputes or appeals related to compliance, where private discussions might not be as relevant. Assessments may involve general evaluations but do not specifically offer the same protections as inspections when it comes to worker communications.