One of the primary benefits to saving documents to OneDrive is that they can be opened, viewed and edited on virtually any device.
For example, this is a screen capture from my Windows Phone 8 device. The documents that are listed here are the same files that I recently worked with on my PC. Because Windows Phone has a built-in copy of Microsoft Office, I can open and edit any of these documents, or even create new Windows Phone 8 Office documents.
Of course, admins will want to make sure that mobile device security accounts for Windows Phone 8 devices.