My problem is that my google work calendar where I have added events is not populating on my TB calendar when it syncs on my laptop.

Is it set at google to allow sync? https://calendar.google.com/calendar/u/0/syncselect

I had all sorts of issue when the integration first appeared with only a partial list of calendars from google appearing and it was the issue I had.

Yes, it was set to sync; so that wasn't the problem.

Maybe a clarification of my issue would help:

  I use Outlook365 at work and populate my calendar with my added events along side my company calendar, which is the main calendar. 
  I used to be able to sync this calendar on TB on my personal laptop and got both the company calendar events & my added ones synced on one calendar. Now, all I am getting after the sync is the company calendar and not my added events. Since TB thinks my default email is my personal one, I thought perhaps changing that to my work email would allow the syncing to happen fully. (..this is the kind of thinking you get from a non-computer expert... :-) )