Is it possible to trigger a checklist based on a missing gender/ethnicity value?

Summary:

We are in the prototyping process and one requirement from our client came up where they want to essentially trigger a simple onboarding checklist to update a workers gender and ethnicity fields if they don't have a value in the system yet.

Content (required):

We are in the prototyping process and one requirement from our client came up where they want to essentially trigger a simple onboarding checklist to update a workers gender and ethnicity fields if they don't have a value in the system yet. Has anyone ever did this?