Hey Amers270,
You mentioned a passcode change is required from your employer. You may be missing this option due to a profile or mobile device management set up on your iPhone by your employer.
You can check to see if you have a configuration profile set up on your iPhone with the steps here: Install or remove configuration profiles on iPhone - Apple Support
"You can see the profiles you have installed in Settings
> General > VPN & Device Management. If you delete a profile, all of the settings, apps, and data associated with the profile are also deleted."
If that's the case, you'll want to reach out to your employer or IT team for further assistance.
Thanks!