Hi Dlstar,
Welcome to the Support Communities!
If you had the Find My iPhone service installed on your work iPhone, you can remotely erase all of your personal information (including iCloud Keychain) from it.
iCloud: Erase your device
http://support.apple.com/kb/PH2701?viewlocale=en_US
- Sign in to icloud.com/#find with your Apple ID (the one you use with iCloud), then click Find My iPhone.If you’re using another iCloud app, click the app’s name at the top of the iCloud.com window, then click Find My iPhone.
- Click All Devices, then select the device you want to erase.
- In the device’s Info window, click Erase device.
To erase:
- An iOS device: Enter your Apple ID password. If the device you’re erasing has iOS 7 or later, enter a phone number and message. The number and message will be displayed on the screen after the device is erased.
- A Mac: Enter your Apple ID password, enter a passcode to lock the Mac (you’ll need to use the passcode to unlock it), then enter a message. The message will be displayed on the screen after the Mac is erased.
- If your device is online, the remote erase begins. A confirmation email is sent to your Apple ID email address.
- If your device is offline, the remote erase begins the next time it’s online.
After the device has been erased, you should also disassociate it from your Apple ID:
iTunes Store: Associating a device or computer to your Apple ID
http://support.apple.com/kb/ht4627
Removing an associated device or computer from an Apple ID
To remove a device or computer from your Apple ID:
- Open iTunes.
- Sign in to your Apple ID by choosing Store > Sign In from the iTunes menu.
- Choose Store > View My Account from the iTunes menu.
- From the Account Information screen, click Manage Devices.
- Click the Remove button next to the device name you would like to unassociate.
Note: Removing a device from your Apple ID does not override the 90-day timer. You must wait 90 days from the day the device was first associated with your Apple ID before it can be associated with another Apple ID.
I hope this information helps ....
- Judy