Issue with Checklist Eligibility Profile based on Fast Formula

Content

We have a business scenario where, 

1) Enterprise Onboarding Checklist is tagged to a certain Eligibility profile 
2) Eligibility Profile was created using Fast Formula
3) Fast Formula finds the Worker Category value from the Person Record (Pending Worker)

Fast Formula used:

DEFAULT FOR PER_ASG_EMPLOYEE_CATEGORY_MEANING IS 'UK - Executive'

CONDITION_RESULT = 'N'

IF 

(PER_ASG_EMPLOYEE_CATEGORY_MEANING = 'UK - HR')

THEN 
(CONDITION_RESULT = 'Y')
return CONDITION_RESULT

We are facing an issue where in the checklist is not getting allocated to the person record. If we remove the eligibility profile then it is working fine. I assume that there is an issue with the Worker Category DBI.