Hi Christine328, it's probably best NOT to connect your work Firefox to a Firefox Account so that its data remains local and doesn't go up to the cloud. Using a Firefox Account is optional.

But if you did want a second Firefox Account, you would need a second email address. You can get a new one from Microsoft, Google, Yahoo, etc., or use your work email address if you haven't connected that to your current Firefox account.

Does that make sense?

THANK you!! I appreciate your time. Christine

You don't even need a Firefox Account, unless you do want to synchronize Firefox user data across multiple devices. IOW, if you have 2 PC's, or a laptop and a PC, or have a Smart phone (or other "mobile" device) that you want to sync with a laptop or desktop PC.

But keep in mind that a Firefox Account can be used for other Mozilla Services related to registrations, too. In such a case, just don't connect the Firefox Account to Sync, it isn't intended to be used with a solitary device; it's a poor substitute for a real back-up of user data.

https://support.mozilla.org/en-US/kb/access-mozilla-services-firefox-accounts

Thanks for your time and info. Christine