Documents on Employee View
HR Managers will have tab to manage documents directly on employee form view. They will have image iew also if document is in form of image. Other users can open related documents from the action as shown in image.
Employee Document Views
Manage your documents with all necessary details as shown in form and list views. List view also gives required details. You can download document from list and form views.
Odoo Document Management System
Just install this module to get Employee Document Management Functionality. Not any extra configurations required.