Final answer:
Orientation sessions conducted by human resource managers are a critical part of the onboarding process, providing new hires with essential company information and facilitating document completion.
Step-by-step explanation:
The sessions run by human resource managers and other staff members that communicate key information to new hires and allow them to complete employment documents are known as orientation sessions. These sessions are an integral part of the onboarding process where new employees are introduced to the company's culture, policies, and administrative procedures. A well-structured orientation and onboarding program are essential for new employees to feel welcomed, become productive members of the organization, and understand their roles and responsibilities.