Update 6/25/2015: URL to the enrollment guide has changed.
Microsoft just released the Microsoft Intune End User Enrollment Guide to help IT show the value of protecting data to end users.
This two-page document is for IT to provide to users to explain the importance of protecting corporate data, as well as their own, by letting their IT department manage their devices.
The document explains what may happen on their devices (installation of apps, security policies applied, etc.) and what will NOT happen on their devices (collecting personal information like phone and browsing records, tracking location, etc.).
This guide is completely customizable by you, so you can change the text as well as the branding, and add your own IT information to it.
The End User Enrollment Guide comes in Word .DOCX, Adobe PDF, and Adobe InDesign file formats for convenience, and can be downloaded here.