How do I setup a journey when employee changes work or residence state

Summary:

I am trying to initiate a set of tasks that are applicable to a specific state(s). How can I trigger a journey automatically when the employee moves to another state?

Will it be event trigger or do I need to look at eligibility profile or something else?

ex: employee moves from FL to CA

I want it to look at their residential address change and/or work location address change to trigger the journey

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