Keith,
1. Open Settings then choose Personalization.
2. Choose the Lock Screen Pane, and then the Screen Saver Settings Link
3. In the Screen Saver Settings dialog box, whether or not you choose to have a screen saver, be certain that the checkbox for "On Resume, display login screen" is not checked.
You're not actually being logged off, per se, but using what looks just like the login screen as a lock screen. If the previously mentioned checkbox is unchecked the requirement to enter a password when you wake the computer up from inactivity is not enforced. Be aware, though, that you may not be able to change this if that particular setting is controlled by a group policy setting on a work computer. You could ask for a waiver, though.
--
Brian
A great many people think they are thinking when they are merely rearranging their prejudices.
~ William James