2. Further, I think once the insured woman has declared her husband as her "family" member, the officials of said dispensary should not demand any such affidavit. However, in order to be more correct, it will be more better if ESIS dispensary is insisting for above type of affidavit, then you can discuss the issue with ESIC Branch Manager as well as with Deputy Director (Benefit Branch), Sub-Regional/Regional Office, ESIC to which the said unit is attached.
3. I have not found any such instructions issued by above department on above issues. Hope, you will also let me know if the decision/correct position is something else, so that I may be able to refresh and update myself on the issue.
6th January 2018 From India, Noida